{"title":"Filters","description":"","products":[{"product_id":"filtro-1-25-cls-ccd","title":"Astronomik 1.25\" CLS CCD filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik 1.25\" CLS CCD Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photography in environments with artificial light pollution using cameras that are also sensitive to infrared. It increases contrast for all Deep-Sky objects.\u003cbr\u003e\u003cbr\u003eThe CLS CCD filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between astronomical objects and the sky background. Thanks to its \u003cb\u003ehigh transmission\u003c\/b\u003e, a large amount of light is allowed through, and the stars are only slightly dimmed. This filter is optimized to block stray light as much as possible while allowing the light from objects to pass through. The filter can be used optimally with telescopes of all apertures with focal ratios from 1:2 to 1:5.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. \u003cb\u003eAll important emission lines of astronomical objects\u003c\/b\u003e and the spectral ranges in which the human eye has maximum sensitivity at night \u003cb\u003eare allowed to pass through\u003c\/b\u003e. The integrated anti-IR coating allows for the use of digital cameras and webcams that do not have their own IR filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvice for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance. In the 1.25\" and 2\" versions, it is also suitable for visual observation in environments with high light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf an IR filter is already available for electronic photography, we suggest using the more economical CLS filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): valid for environments with light pollution from mercury vapor lamps \u003c\/li\u003e \u003cli\u003eVisual observation (city): neutral, but a UHC-E or UHC filter is more suitable \u003c\/li\u003e \u003cli\u003eConventional film: excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eCCD astrophotography: excellent, high reduction of light pollution is achieved \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): valid, some color shift but better contrast \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with MC clear glass): excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical filter data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e95% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e97% transmission at 656nm (H alpha) \u003c\/li\u003e \u003cli\u003e1. Transmission range from 450nm to 520nm \u003c\/li\u003e \u003cli\u003e2. Transmission range from 640nm to 690nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eMoisture resistant, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage box.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: CLS CCD\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik 1.25\" CLS CCD Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCLS CCD\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120615489752,"sku":"16747","price":99.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/4070262495a743f79b6269c37232bdee.jpg?v=1764068264"},{"product_id":"filtro-ccd-1-25-12nm-h-alpha","title":"Astronomik 1.25\" 12nm H-alpha CCD filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik 1.25\" 12nm H-alpha CCD filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for hydrogen nebula photography in environments with artificial light pollution or in dark sky environments. The contrast between objects glowing in H-alpha light and the sky background is significantly increased.\u003cbr\u003e\u003cbr\u003eThe H-alpha filter increases the contrast between hydrogen nebulae and the sky background. With a narrow full-width at half-maximum combined with \u003cb\u003ehigh transmissivity\u003c\/b\u003e in the range of the H-alpha lines, a superior increase in contrast is obtained compared to filters with a wider bandwidth. The \u003cb\u003efull-width at half-maximum of 12nm\u003c\/b\u003e is optimal for use with common CCD and CMOS sensors. Thanks to this full-width at half-maximum, it is possible to use fast optics. The filter also features \u003cb\u003etransmissivity of nearly 100%\u003c\/b\u003e, which cannot be achieved with narrow-band filters.\u003cbr\u003e\u003cbr\u003eIn large cities, photography with cooled CCD cameras is usually limited by darkness conditions. The use of smaller full-widths at half-maximum to improve the sky background prevents details from emerging in the object being observed. Compared to very narrow-band filters, the 12nm H-alpha filter has the advantage of making guide stars available for tracking with almost any camera equipped with an autoguiding sensor. The scope of use ranges from aperture ratios of 1:2.8 to 1:15 for lenses and telescopes of any diameter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low- and high-pressure lamps (mercury (Hg) and sodium (Na)) as well as night-sky luminescence lines (airglow). The filter \u003cb\u003eincreases contrast\u003c\/b\u003e between objects glowing in the H-alpha emission line and the sky background.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other usage modes\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIn combination with OIII and SII CCD filters, it is possible to take three-color photographs of emission-line objects even in locations with high light pollution, similar to the Hubble Space Telescope. Astronomik H-alpha filters are not suitable for solar observation!\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): not suitable \u003c\/li\u003e \u003cli\u003eVisual observation (city): not suitable \u003c\/li\u003e \u003cli\u003eConventional film: neutral, but long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: excellent, high contrast is obtained with H II emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): Good, however reduced sensitivity in H-alpha compared to use with modified cameras \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): excellent, high contrast is obtained with H II emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with MC clear glass): excellent, high contrast is obtained with H II emission nebulae \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, high contrast is obtained with bright objects\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical filter data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003etransmissivity of more than 97% at the H-alpha line (656nm) \u003c\/li\u003e \u003cli\u003efull-width at half-maximum 12nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003ecomplete blocking of all disturbing wavelengths up to the infrared\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003e \u003cb\u003eparfocal\u003c\/b\u003e with all other Astronomik filters \u003c\/li\u003e \u003cli\u003efilter thickness: 1mm \u003c\/li\u003e \u003cli\u003emoisture-resistant, non-aging and scratch-proof \u003c\/li\u003e \u003cli\u003e \u003cb\u003epolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003ethe filter is shipped in its own storage case.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eMounting material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: H-alpha 12nm\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik 1.25\" 12nm H-alpha CCD filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-Alpha Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMounting material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-alpha 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution blocking\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDaytime and twilight observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMoon\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eEmission nebulae\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003ePlanetary nebulae\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120615882968,"sku":"16751","price":139.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/1099f23f50c3c07af2c0a7e2e102778d.jpg?v=1764068277"},{"product_id":"filtro-set-filtri-1-25-l-rgb-typ-2c","title":"Astronomik 1.25\" LRGB Type 2c filter set","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik 1.25\" L RGB Typ 2c Filter Set\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eFilter set suitable for astrophotography with CCD cameras. These filters allow for \u003cb\u003echromatically neutral image reproduction\u003c\/b\u003e of planets, stars, and emission and reflection nebulae.\u003cbr\u003e\u003cbr\u003eThe transmission characteristics of the L-RGB TYP 2c filters are optimized for CCD astrophotography: with this set, you finally have filters that \u003cb\u003eallow you to photograph all objects in their natural colors\u003c\/b\u003e. Both continuous emission objects and objects that emit only individual lines can be rendered in their actual coloring. You get CCD photographs that show the object in optimal colors, exactly as you would see it with the naked eye, if the eye were sensitive enough.\u003cbr\u003e\u003cbr\u003eThis filter set has been designed with special attention to:\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003esimple color separation processing \u003c\/li\u003e \u003cli\u003emaximum transmission (close to 100%) for the shortest possible exposure times \u003c\/li\u003e \u003cli\u003ehigh transmission in H-beta, OIII, and H-alpha \u003c\/li\u003e \u003cli\u003etransmission of individual filters adjusted for optimal color rendering \u003c\/li\u003e \u003cli\u003euse of industrial standards\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThanks to the careful processing of the substrate, which is done filter by filter rather than on the entire sheet, not only is \u003cb\u003eparfocality\u003c\/b\u003e guaranteed, but distortions are also reduced well beyond normal tolerance limits. So as not to be the Achilles' heel in a quality optical system, Astronomik filters are obviously diffraction-limited. There are no more problems related to the focus point or the correct image positioning of the individual color separations.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe L-RGB filter set divides the defined spectrum into its red, green, blue, and luminance components. This allows for color separations with B\/W sensors that correspond to the human eye's color vision according to DIN 5032. Thanks to the sRGB color space defined in 1996, it is possible to maintain true colors throughout the production process, from image capture to processing and display. Monitor manufacturers, image processing software, and image rendering tools use these standards. With the Astronomik L-RGB filter set, you will obtain excellent material for creating sRGB color images with your camera.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIn combination with astronomical line filters, you can extract interesting details from astronomical objects, for example, by replacing or supplementing the red filter with H-alpha or the green with OIII.\u003cbr\u003eFor planetary photography and observation, the filters can also be freely used for purposes other than those intended.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): good, as a color filter for planetary observation \u003c\/li\u003e \u003cli\u003eVisual observation (city): good, as a color filter for planetary observation \u003c\/li\u003e \u003cli\u003eConventional film: not suitable \u003c\/li\u003e \u003cli\u003eCCD astrophotography: Excellent, excellent color separation for RGB and L-RGB images. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): not suitable \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (with astro-modifications): not suitable \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with MC clear glass): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): good, as a color filter for photographing planets \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): good, as a color filter for photographing planets\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical filter data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003eThe filter can be used with all focal ratios. \u003c\/li\u003e \u003cli\u003eTransmission is typically 97-99% \u003c\/li\u003e \u003cli\u003eAll filters have an \u003cb\u003eIR\/UV block\u003c\/b\u003e and are therefore suitable for CCD photography \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eDoes not fog\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: L-RGB Typ 2c\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik 1.25\" L RGB Typ 2c filter set\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB Typ 2c\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120615915736,"sku":"16756","price":299.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/4cb360dceaac1b3965861798affe33e0.jpg?v=1764068276"},{"product_id":"filtro-oiii-12nm-ccd-1-25","title":"Astronomik OIII 12nm CCD Filter 1.25\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 12nm CCD 1.25\" Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photography and observation of OIII regions in environments with artificial light pollution or under dark skies. The \u003cb\u003econtrast between objects\u003c\/b\u003e that glow in OIII light and the sky background \u003cb\u003eis significantly increased\u003c\/b\u003e.\u003cbr\u003e\u003cbr\u003eThe OIII filter increases the contrast between certain astronomical objects (especially supernova remnants and planetary nebulae) and the sky background. With a \u003cb\u003enarrow full width at half maximum (FWHM)\u003c\/b\u003e combined with \u003cb\u003ehigh transmissivity\u003c\/b\u003e in the OIII line range, a superior increase in contrast is achieved compared to filters with wider bandwidths. It can be used with best results at aperture ratios from 1:3 to 1:15 with telescopes starting from 6\" (150mm) aperture for visual observations at medium magnifications, and with lenses and telescopes of any diameter for CCD, DSLR, and film astrophotography (see alternatives).\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) as well as airglow lines. Both OIII lines pass through the filter with high transmissivity.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in cities, despite high light pollution. In combination with H-alpha and SII CCD filters, you can also take three-color photographs of emission-line objects in high light-pollution areas, similar to the process used by the Hubble Space Telescope.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf there is no IR-cut filter for electronic photography, an OIII CCD filter is required.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): excellent, high contrast with OIII emission nebulae is obtained \u003c\/li\u003e \u003cli\u003eVisual observations (city): excellent, high contrast with OIII emission nebulae is obtained \u003c\/li\u003e \u003cli\u003eConventional film: partially suitable, long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: good, but an additional IR-cut filter is necessary \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): excellent, high contrast with OIII emission nebulae is obtained \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): excellent, high contrast with OIII emission nebulae is obtained \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): good, but an additional IR-cut filter is necessary \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): neutral, if light pollution is a serious problem and OIII emission nebulae are being photographed \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical data for the filter:\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e93% transmissivity at 501nm (OIII line) \u003c\/li\u003e \u003cli\u003e \u003cb\u003eFull width at half maximum 12nm\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture-resistant, non-aging, and scratch-proof \u003c\/li\u003e \u003cli\u003e \u003cb\u003eOptically polished material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage case.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: OIII 12nm\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 12nm CCD 1.25\" Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDaytime and twilight observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120615981272,"sku":"20600","price":139.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/2d307654131b852c16b3971d5fe3f756.jpg?v=1764068277"},{"product_id":"filtro-cls-ccd-36-mm-con-montatura","title":"Astronomik CLS CCD 36 mm mounted filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik CLS CCD 36 mm mounted filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photography in environments with artificial light pollution using cameras that are also sensitive to infrared. It increases contrast for all Deep-Sky objects.\u003cbr\u003e\u003cbr\u003eThe CLS CCD filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between astronomical objects and the sky background. Thanks to its \u003cb\u003ehigh transmission\u003c\/b\u003e, a large amount of light is allowed through, and stars are only slightly dampened. This filter is optimized to block stray light as much as possible while letting the light from objects pass through to the maximum extent. The filter can be optimally used with telescopes of all apertures with focal ratios from 1:2 to 1:5.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. \u003cb\u003eAll important emission lines of astronomical objects\u003c\/b\u003e and the spectral ranges in which the eye has maximum sensitivity at night \u003cb\u003eare allowed to pass through\u003c\/b\u003e. The integrated anti-IR coating allows for the use of digital cameras and webcams without their own IR filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvice for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance. In the 1.25\" and 2\" versions, it is also suitable for visual observation in environments with high light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf an IR filter is already available for electronic photography, we suggest using the more economical CLS filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): valid for environments with light pollution from mercury vapor lamps \u003c\/li\u003e \u003cli\u003eVisual observation (city): neutral, but a UHC-E or UHC filter is more suitable \u003c\/li\u003e \u003cli\u003eConventional film: excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eCCD astrophotography: excellent, achieves a high reduction in light pollution \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): valid, some color shift but better contrast \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with MC clear glass): excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e95% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e97% transmission at 656nm (H alpha) \u003c\/li\u003e \u003cli\u003e1. Transmission range from 450nm to 520nm \u003c\/li\u003e \u003cli\u003e2. Transmission range from 640nm to 690nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eResistant to humidity, non-degrading and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own case.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eFrame: Mounted (Ring)\u003c\/li\u003e\n\n\u003cli\u003eFilter size (mm): 36\u003c\/li\u003e\n\n\u003cli\u003eSeries: CLS CCD\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: Broadband Filters\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik CLS CCD 36 mm mounted filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMounted (Ring)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter size (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCLS CCD\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eGalaxies and star clusters\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003ePlanetary nebulae\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSupernova remnants\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eEmission nebulae\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120617423064,"sku":"52921","price":139.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/26bba4a29b8d94e8f8da29226553d4e6.jpg?v=1764068309"},{"product_id":"filtro-sii-12nm-ccd-36mm","title":"Astronomik SII 12nm CCD Filter 36mm","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik SII 12nm CCD 36mm Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e feature an integrated IR blocker, which prevents optical issues caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly developed MFR technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eA brief guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which suppresses a large part of light pollution and natural airglow. The result will be skies with a dark background, thus allowing longer exposure times, which makes even fainter objects visible. The filter is optimized to display objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the simple CLS filter does not have an integrated IR blocker. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter allows only light in the H-beta, OIII, H-alpha, and SII lines to pass through. The reduction of background brightness is significantly greater compared to a CLS; however, this filter only works with gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor in-depth astrophotographic use, we recommend \u003cb\u003enarrowband filters for the OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep photos of faint objects even from locations with intense light pollution and a full Moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astro-modified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera so that it can also be used for daytime photography, without having to reprocess all the images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 672\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eFrame: Ring\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: MFR\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik SII 12nm CCD 36mm Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e672\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull width at half maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eRing\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMFR\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter dimensions (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120617619672,"sku":"67127","price":189.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/69d2ee681406e0befbb8ffedc6543a0a.jpg?v=1764068316"},{"product_id":"filtro-sii-6nm-ccd-36mm","title":"Astronomik SII 6nm CCD 36mm Filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik SII 6nm CCD Filter 36mm\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the SII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly developed MFR technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrow-band filters with 12 nm FWHM are interesting when combined with a DSLR or CCD camera with high dark current. The 12 nm filters are also the best choice if your camera is equipped with an integrated guiding chip, as they allow you to capture twice as many stars.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eA quick guide to choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized for viewing objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR blocker. Therefore, for a converted (\"astromodified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter lets only light in the H-beta, OIII, H-alpha, and SII lines pass through. The reduction of background brightness is significantly greater than with a CLS; however, this filter only works with gas nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor advanced astrophotography, we recommend the \u003cb\u003enarrow-band filters for the OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep images of faint objects even from locations with intense light pollution and a full moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astromodified\") cameras, we suggest the \u003cb\u003eAstronomik OWB\u003c\/b\u003e \u003cb\u003efilter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance\". The filter converts the spectrum of a modified camera so that it can also be used for daylight photography without having to reprocess all the images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eFrame: Mounted\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 6\u003c\/li\u003e\n\n\u003cli\u003eFilter size (mm): 36\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: MFR\u003c\/li\u003e\n\n\u003cli\u003eCentral wavelength (nm): 672\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik SII 6nm CCD Filter 36mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMounted\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull width at half maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter size (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMFR\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCentral wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e672\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120617685208,"sku":"63192","price":299.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/4f2330a2621c89f64bcaef21bc51b4a2.jpg?v=1764068317"},{"product_id":"filtro-deepsky-set-filtri-rgb-36-mm","title":"Astronomik DeepSky RGB filter set 36 mm","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik DeepSky RGB filter set 36 mm\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThe \u003cstrong\u003eAstronomik DeepSky RGB filter set 36 mm\u003c\/strong\u003e is a high-quality \u003cstrong\u003eAstronomik\u003c\/strong\u003e product designed to offer reliable performance and excellent results for both enthusiasts and experienced users.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eDiameter (mm): 36\u003c\/li\u003e\n\n\u003cli\u003eTransmission: \u0026gt;95\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eFrame: Ring\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFilter size (mm): 36\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik DeepSky RGB filter set 36 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e\u0026gt;95\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eRing\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter size (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDeep-Sky RGB\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDiameter (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120617750744,"sku":"49236","price":361.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/a689bd9838a81a22829f4f63943a0c2b.jpg?v=1764068317"},{"product_id":"filtro-uhc-36-mm-con-montatura","title":"Astronomik UHC filter 36 mm mounted","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC Filter 36 mm mounted\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eLearn more about the UHC series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is \u003cb\u003esuitable for visual observation in light-polluted environments\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Excellent for comet observation! In addition, you get \u003cb\u003egreater contrast of nebular objects\u003c\/b\u003e and a dimming of stars. The range of use spans from aperture ratios of 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The filter is intended for the observation of gaseous nebulae and planetary nebulae in cities and environments with light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. This results in an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the object being observed. Due to the wide full-width half-maximum, the contrast is lower compared to the UHC filter, but the greater amount of light allows it to be used effectively even with small telescopes. The filter's transmission range includes an emission line found in the tails of comets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for the observation of Jupiter's clouds \u003c\/li\u003e \u003cli\u003eBetter separation of double stars\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras, even under high light pollution conditions, without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes with an aperture of 5\" (125mm) or larger, we recommend the UHC filter, which provides greater contrast enhancement. With apertures of 10'' (250mm) or larger, you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): neutral, but a UHC filter is more suitable \u003c\/li\u003e \u003cli\u003eVisual observations (city): Excellent, for telescopes up to 125mm aperture with medium magnifications \u003c\/li\u003e \u003cli\u003eConventional film: good, but long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astro-modified): good, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear glass MC): valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003emaximum transmission at approximately 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eResistant to humidity, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own case.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even fainter objects visible. The filter is optimized to display objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted camera\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eFrame: Ring\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFilter size (mm): 36\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 480-505 \u0026amp; 645-700\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: UHC Filter\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC Filter 36 mm mounted\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eRing\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter size (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e480-505 \u0026amp; 645-700\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution reduction\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120617783512,"sku":"52890","price":126.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/38b224140d0a687f78ddf65fcb7440dd.jpg?v=1764068317"},{"product_id":"filtro-h-alpha-6nm-ccd-clip-canon-eos-r-xl","title":"Astronomik H-alpha 6nm CCD Clip Filter for Canon EOS R XL","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik H-alpha 6nm CCD Clip Filter for Canon EOS R XL\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the H-alpha 6nm series... \u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly designed MFR coating technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which blocks a large part of light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which also make fainter objects visible. The filter is optimized to display objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the basic CLS filter does not have an integrated IR blocker. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter is necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter only lets light through at the H-beta, OIII, H-alpha, and SII lines. Background brightness reduction is significantly greater than with a CLS, however, this filter only works with gas nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor in-depth astrophotography, we recommend the \u003cb\u003enarrowband filters for the OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep photos of faint objects even from locations with intense light pollution and a full Moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astro-modified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance\". The filter converts the spectrum of a modified camera, so it can also be used for daytime photography without having to reprocess all images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 656\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 6\u003c\/li\u003e\n\n\u003cli\u003eMount: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik H-alpha 6nm CCD Clip Filter for Canon EOS R XL\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-Alpha Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e656\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull width at half maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptics coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for ...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCanon EOS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-alpha 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDouble stars\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMoon and planets\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120618537176,"sku":"67099","price":529.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/e7d1285d1f3c21a4b51010245eca64a0.jpg?v=1764068329"},{"product_id":"filtro-h-alpha-12nm-ccd-clip-canon-eos-r-xl","title":"Astronomik H-alpha 12nm CCD Clip Filter for Canon EOS R XL","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik H-alpha 12nm CCD Clip Filter for Canon EOS R XL\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photographing hydrogen nebulae in environments with artificial light pollution or in dark sky locations. The contrast between objects shining in H-alpha light and the sky background is significantly increased.\u003cbr\u003e\u003cbr\u003eThe H-alpha filter increases the contrast between hydrogen nebulae and the sky background. With a narrow full width at half maximum (FWHM) combined with \u003cb\u003ehigh transmissivity\u003c\/b\u003e in the H-alpha line range, you achieve a superior increase in contrast compared to wider bandwidth filters. The \u003cb\u003e12nm FWHM\u003c\/b\u003e is optimal for use with common CCD and CMOS sensors. Thanks to this bandwidth, it is possible to use fast optics. The filter also features \u003cb\u003ealmost 100% transmissivity\u003c\/b\u003e, which cannot be achieved with narrower-band filters.\u003cbr\u003e\u003cbr\u003eIn large cities, photography with cooled CCD cameras is usually limited by darkness conditions. Using very narrow bandwidths to improve the sky background prevents details from emerging in the object being observed. Compared to very narrow-band filters, the 12nm H-alpha filter has the advantage of allowing stars to be found for tracking with almost any camera equipped with a tracking sensor. The range of use spans from focal ratios of 1:2.8 to 1:15 for lenses and telescopes of any diameter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. The filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between objects shining in the H-alpha emission line and the sky background.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvice and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIn combination with OIII and SII CCD filters, it is possible to take three-color photographs of emission line objects, even in locations with high light pollution, just as is done with the Hubble Space Telescope. Astronomik H-alpha filters are not suitable for observing the Sun!\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): not suitable \u003c\/li\u003e \u003cli\u003eVisual observations (city): not suitable \u003c\/li\u003e \u003cli\u003eConventional film: neutral, but long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: excellent, high contrast with H II emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): Good, however reduced H-alpha sensitivity compared to modified cameras \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astromodified): excellent, high contrast with H II emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): excellent, high contrast with H II emission nebulae \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, high contrast with bright objects\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical data of the filter:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003etransmissivity of more than 97% in the H-Alpha line (656nm) \u003c\/li\u003e \u003cli\u003efull width at half maximum 12nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003ecomplete blocking of all interfering wavelengths up to the infrared\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003e \u003cb\u003eparfocal\u003c\/b\u003e with all other Astronomik filters \u003c\/li\u003e \u003cli\u003efilter thickness: 1mm \u003c\/li\u003e \u003cli\u003emoisture-resistant, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003epolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003ethe filter is shipped in its own case.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eWarning\u003c\/b\u003e: in principle, all lenses can be used with Clip filters: Canon EF optics or lenses from third-party manufacturers such as Sigma, Tamron, Tokina, Walimex etc. \u003cb\u003eThe use of Clip filters with Canon EF-S lenses is not possible!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: FMC\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Canon EOS\u003c\/li\u003e\n\n\u003cli\u003eCentral wavelength (nm): 656\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik H-alpha 12nm CCD Clip Filter for Canon EOS R XL\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-Alpha Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFMC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCanon EOS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCentral wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e656\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull width at half maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter thickness (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-alpha 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120618569944,"sku":"67075","price":339.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/6c9ae123e87f1f35f46ff5c58cdff70d.jpg?v=1764068330"},{"product_id":"filtro-oiii-6nm-ccd-clip-canon-eos-r-xl","title":"Astronomik OIII 6nm CCD Clip Filter for Canon EOS R XL","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 6nm CCD Clip Filter for Canon EOS R XL\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the OIII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is suitable for photographing hydrogen nebulae from observation sites with light pollution, as well as from areas with dark skies. The contrast between objects emitting at 501nm and the background is extremely enhanced. \u003c\/p\u003e \u003cp\u003eT\u003cb\u003ehe OIII CCD filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and high 96% transmission, the filter ensures a significant increase in contrast, as all unwanted light from wavelengths other than the target is blocked from UV to IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe FWHM value of 6 nm is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled cameras\u003c\/b\u003e). 6 nm filters are the best choice if observing from a location with particularly intense light pollution or generally when capturing faint objects in star-rich areas of the sky. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eMoisture-resistant, wear-resistant, and scratch-proof \u003c\/li\u003e \u003cli\u003eOptically polished substrate free of streaks and internal stresses\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with the H-alpha CCD and SII CCD filters, you can capture emission line images in three colors (HSO) of celestial objects, just like the Hubble Telescope. This is possible even from locations with high light pollution.This filter is suitable for photographing hydrogen nebulae from observation sites with light pollution, as well as from areas with dark skies. The contrast between objects emitting at 501nm and the background is extremely enhanced. \u003c\/p\u003e \u003cp\u003eT\u003cb\u003ehe OIII CCD filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and high 96% transmission, the filter ensures a significant increase in contrast, as all unwanted light from wavelengths other than the target is blocked from UV to IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe FWHM value of 6 nm is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled cameras\u003c\/b\u003e). 6 nm filters are the best choice if observing from a location with particularly intense light pollution or generally when capturing faint objects in star-rich areas of the sky. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eMoisture-resistant, wear-resistant, and scratch-proof \u003c\/li\u003e \u003cli\u003eOptically polished substrate free of streaks and internal stresses\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with the H-alpha CCD and SII CCD filters, you can capture emission line images in three colors (HSO) of celestial objects, just like the Hubble Telescope. This is possible even from locations with high light pollution.\u003c\/p\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly developed MFR technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrow-band filters with 12 nm FWHM are inter\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey Features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 501\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 6\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain Technical Specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 6nm CCD Clip Filter for Canon EOS R XL\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e501\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMRF\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for ...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCanon EOS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDouble stars\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMoon and planets\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120620601560,"sku":"67061","price":529.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/7b08e600ec75d665223316b3c68fa7ec.jpg?v=1764068342"},{"product_id":"filtro-oiii-6nm-ccd-clip-sony-alpha-7","title":"Astronomik OIII 6nm CCD Clip Filter for Sony Alpha 7","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 6nm CCD Clip Filter for Sony Alpha 7\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eFind out more about the OIII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is suitable for photographing hydrogen nebulae from locations with light pollution, as well as from dark sky areas. The contrast between objects emitting at 501nm and the background is significantly enhanced. \u003c\/p\u003e \u003cp\u003eT\u003cb\u003ehe OIII CCD filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and high 96% transmission, the filter guarantees a remarkable increase in contrast, as all unwanted light from wavelengths other than the target is blocked from the UV to the IR range. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6 nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled cameras\u003c\/b\u003e). 6 nm filters are the best choice if you are observing from a location with particularly intense light pollution or in general when capturing faint objects in star-rich areas of the sky. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eMoisture-resistant, wear-resistant and scratch-proof \u003c\/li\u003e \u003cli\u003eOptically polished substrate, free of streaks and residual stresses\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with H-alpha CCD and SII CCD filters, you can take images of emission lines in three colors (HSO) of celestial objects, just like the Hubble telescope. This is possible even from locations with high light pollution.This filter is suitable for photographing hydrogen nebulae from locations with light pollution, as well as from dark sky areas. The contrast between objects emitting at 501nm and the background is significantly enhanced. \u003c\/p\u003e \u003cp\u003eT\u003cb\u003ehe OIII CCD filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and high 96% transmission, the filter guarantees a remarkable increase in contrast, as all unwanted light from wavelengths other than the target is blocked from the UV to the IR range. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6 nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled cameras\u003c\/b\u003e). 6 nm filters are the best choice if you are observing from a location with particularly intense light pollution or in general when capturing faint objects in star-rich areas of the sky. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eMoisture-resistant, wear-resistant and scratch-proof \u003c\/li\u003e \u003cli\u003eOptically polished substrate, free of streaks and residual stresses\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with H-alpha CCD and SII CCD filters, you can take images of emission lines in three colors (HSO) of celestial objects, just like the Hubble telescope. This is possible even from locations with high light pollution.\u003c\/p\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMRF coating\u003c\/b\u003e: thanks to the newly developed MFRF technology, it is possible to use the filter with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrow-band filters \u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and fulfilling observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 501\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eMounting material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 6\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 6nm CCD Clip Filter for Sony Alpha 7\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e501\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMounting material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull width at half maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMRF\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eGalaxies and star clusters\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution filter\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120620699864,"sku":"63217","price":470.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/9d947480ff7f262ffb2250958a7c8095.jpg?v=1764068345"},{"product_id":"filtro-sii-12nm-ccd-clip-sony-alpha-7","title":"Astronomik SII 12nm CCD Clip Filter for Sony Alpha 7","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik SII 12nm CCD Clip Filter for Sony Alpha 7\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly designed MFR technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eA brief guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which blocks a large part of light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even fainter objects visible. The filter is optimized to display objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR blocker. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter allows only light in the H-beta, OIII, H-alpha, and SII lines to pass through. Background brightness reduction is significantly greater than with a CLS; however, this filter only works with gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor advanced astrophotography, we recommend \u003cb\u003enarrowband filters for OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep photos of faint objects even from locations with intense light pollution and a full Moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astro-modified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera, so it can also be used for daytime photography without having to reprocess all the images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Sony Alpha 7\/9\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eOptic coating: MFR\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik SII 12nm CCD Clip Filter for Sony Alpha 7\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptic coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMFR\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCentral wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e672\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120620732632,"sku":"67121","price":307.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/70b3276f2adbb4c67d8a8d727b32e148.jpg?v=1764068345"},{"product_id":"filtro-sii-6nm-ccd-clip-filter-eos-r-xl","title":"Astronomik SII 6nm CCD Clip-Filter EOS R XL","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik SII 6nm CCD Clip-Filter for EOS R XL\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the SII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMRF coating\u003c\/b\u003e: thanks to the newly developed MFRF technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrowband filters with 12 nm FWHM are interesting when used in combination with a DSLR or CCD camera with high dark current. 12 nm filters are also the best choice if your camera is equipped with an integrated guiding chip, because they allow you to capture twice as many stars.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which suppresses most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized for viewing objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR blocker. Therefore, for a converted (\"astromodified\") camera, a CLS-CCD filter is required! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter allows only light in the H-beta, OIII, H-alpha, and SII lines to pass through. The reduction of background brightness is significantly greater than with a CLS; however, this filter only works with gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor in-depth astrophotography, we recommend \u003cb\u003enarrowband filters for OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with 6 nm or 12 nm FWHM. These filters allow you to take truly deep photos of faint objects even from locations with intense light pollution and a full Moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astromodified\") cameras, we suggest the \u003cb\u003eAstronomik OWB\u003c\/b\u003e \u003cb\u003efilter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera so that it can also be used for daytime photography, without having to reprocess all the images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 672\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 6\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: MRF\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik SII 6nm CCD Clip-Filter for EOS R XL\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e672\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMRF\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for ...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCanon EOS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120620798168,"sku":"67143","price":529.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/44e74a529a36b14f68a8431039ca8cd4.jpg?v=1764068346"},{"product_id":"filtro-sii-6nm-ccd-clip-sony-alpha-7","title":"Astronomik SII 6nm CCD Clip Filter for Sony Alpha 7","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik SII 6nm CCD Clip Filter for Sony Alpha 7\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the SII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMRF coating\u003c\/b\u003e: thanks to the newly designed MFRF technology, it is possible to use the filter with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrow-band filters with 12 nm FWHM are interesting in combination with a DSLR or CCD camera with high dark current. The 12 nm filters are also the best choice if your camera is equipped with an integrated guiding chip, as they allow you to capture twice as many stars.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which reduces most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized for viewing objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the simple CLS filter does not have an integrated IR blocker. Therefore, for a converted (\"astromodified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter only allows light in the H-beta, OIII, H-alpha, and SII lines to pass through. The background brightness reduction is significantly greater than with a CLS; however, this filter only works with gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor in-depth astrophotographic use, we recommend the \u003cb\u003enarrow-band filters for OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep photos of faint objects even from locations with intense light pollution and a full moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astromodified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance\". The filter converts the spectrum of a modified camera so that it can also be used for daytime photography, without having to reprocess all the images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Sony Alpha 7\/9\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 6\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: MRF\u003c\/li\u003e\n\n\u003cli\u003eCentral wavelength (nm): 672\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik SII 6nm CCD Clip Filter for Sony Alpha 7\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMRF\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCentral wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e672\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120620994776,"sku":"63185","price":519.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/9d947480ff7f262ffb2250958a7c8095_2dba7b83-e9f5-4b14-beba-e00b0d2a16ab.jpg?v=1764068351"},{"product_id":"filtro-uhc-e-xl-clip-canon-eos-r","title":"Astronomik UHC-E XL Clip Filter for Canon EOS R","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC-E XL Clip Filter for Canon EOS R\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is \u003cb\u003esuitable for visual observation in environments with light pollution\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Exceptional for observing comets! Furthermore, \u003cb\u003egreater contrast of nebular objects\u003c\/b\u003e and a dimming of stars are achieved. The range of use extends from focal ratios of 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The filter is intended for the observation of gaseous nebulae and planetary nebulae in cities and environments with light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) and the lines of airglow. This results in an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the object being observed. Due to the wider Full Width at Half Maximum (FWHM), the contrast is reduced compared to the UHC filter, but the greater amount of light allows it to be used profitably even with small telescopes. The transmission range of the filter includes an emission line found in the tails of comets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in cities with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for observing Jupiter's clouds. \u003c\/li\u003e \u003cli\u003eBetter separation of double stars. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes with an aperture of 5\" (125mm) or larger, we recommend the UHC filter, which increases contrast more effectively. With apertures of 10'' (250mm) and above, you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): neutral, but a UHC filter is more suitable. \u003c\/li\u003e \u003cli\u003eVisual observation (city): Excellent, for telescopes up to 125mm aperture with medium magnification. \u003c\/li\u003e \u003cli\u003eConventional film: good, but requires long exposure times. \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astromodified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-cut filter is required. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious issue. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical data of the filter:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003eMaximum transmission at approx. 95%\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture-resistant, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage box. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out most light pollution and natural airglow. The result will be skies with a dark background, thus allowing for longer exposure times, which makes even the faintest objects visible. The filter is optimized for viewing objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted (\"astromodified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in places with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 465 - 530 \u0026amp; \u0026gt; 645\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Canon EOS\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC-E XL Clip Filter for Canon EOS R\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e465 - 530 \u0026amp; \u0026gt; 645\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCanon EOS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter thickness (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eParfocal\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC-E\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120621060312,"sku":"64939","price":169.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/4195ef05c8769ad381ea68ddd008e9e7.jpg?v=1764068353"},{"product_id":"filtro-uhc-clip-nikon-z-xl","title":"Astronomik UHC Clip Filter Nikon Z XL","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC Clip Filter for Nikon Z XL\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the UHC series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is \u003cb\u003esuitable for visual observation in environments with light pollution\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Exceptional for comet observation! In addition, you get \u003cb\u003egreater contrast of nebular objects\u003c\/b\u003e and a dimming of the stars. The field of use ranges from aperture ratios of 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The scope of the filter is the observation of gaseous nebulae and planetary nebulae in cities and environments with light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) and the lines of night luminescence (airglow). Therefore, an \u003cb\u003eincrease in contrast\u003c\/b\u003e is obtained between the sky background and the object being observed. Due to the wide full-width at half-maximum, the contrast is reduced compared to the UHC filter, but the greater amount of light allows its profitable use even with small telescopes. The transmission range of the filter includes an emission line found in comet tails.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for the observation of Jupiter's clouds. \u003c\/li\u003e \u003cli\u003eBetter separation of double stars. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows you to take photographs with DSLR cameras even in high light pollution conditions without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes from 5\" (125mm) aperture and up, we recommend the UHC filter, which provides greater contrast enhancement. With apertures of 10'' (250mm) and up, the OIII filter can also be used.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter Features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): neutral, but a UHC filter is more suitable. \u003c\/li\u003e \u003cli\u003eVisual observations (city): Excellent, for telescopes up to 125mm aperture with medium magnifications. \u003c\/li\u003e \u003cli\u003eConventional film: good, but long exposure times. \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-cut filter is required. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical filter data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmissivity at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmissivity at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmissivity at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmissivity at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003emaximum transmissivity at approx. 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmissivity range from 465nm to 530nm and 645nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture resistant, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage box. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even fainter objects visible. The filter is optimized to display objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted camera \u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Nikon\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 480-505 \u0026amp; 645-700\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC Clip Filter for Nikon Z XL\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eNikon\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e480-505 \u0026amp; 645-700\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e97\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120621093080,"sku":"74407","price":216.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/cd10f7b8ecf7dfcf82f86ca33a461f04.jpg?v=1764068352"},{"product_id":"filtro-uhc-clip-sony-alpha","title":"Astronomik UHC Clip Filter for Sony Alpha","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC Clip Filter for Sony Alpha\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the UHC series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is \u003cb\u003esuitable for visual observation in light-polluted environments\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Exceptional for observing comets! You also achieve \u003cb\u003egreater contrast for nebular objects\u003c\/b\u003e and a dimming of the stars. The range of use spans from aperture ratios of 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The filter is intended for observing gaseous nebulae and planetary nebulae in cities and light-polluted environments.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. This results in an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the observed object. Due to the wide full width at half maximum (FWHM), the contrast is reduced compared to the UHC filter, but the greater amount of light allows it to be used effectively even with small telescopes. The transmission range of the filter includes an emission line found in comet tails.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for observing Jupiter's clouds. \u003c\/li\u003e \u003cli\u003eBetter separation of double stars. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes from 5\" (125mm) in aperture, we recommend the UHC filter, which provides greater contrast enhancement. With apertures from 10'' (250mm) upwards, you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): neutral, but a UHC filter is more suitable. \u003c\/li\u003e \u003cli\u003eVisual observation (city): Excellent, for telescopes up to 125mm aperture with medium magnifications. \u003c\/li\u003e \u003cli\u003eConventional film: good, but requires long exposure times. \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-cut filter is required. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003emaximum transmission at approximately 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eResistant to humidity, non-aging, and scratch-resistant. \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage case.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA quick guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which blocks most light pollution and natural airglow. The result will be skies with a dark background, allowing for longer exposure times that make even fainter objects visible. The filter is optimized to display objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the basic CLS filter does not have a built-in IR block. Therefore, for a converted camera...\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Sony Alpha 7\/9\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 480-505 \u0026amp; 645-700\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 97\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC Clip Filter for Sony Alpha\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e480-505 \u0026amp; 645-700\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e97\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120621355224,"sku":"53727","price":239.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/d79868924c5496ce1be0d77b2e1dfcda.jpg?v=1764068362"},{"product_id":"filtro-uhc-xl-clip-canon-eos-r","title":"Astronomik UHC XL Clip Filter for Canon EOS R","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC XL Clip Filter for Canon EOS R\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the UHC series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is \u003cb\u003esuitable for visual observation in environments with light pollution\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Excellent for observing comets! In addition, you get \u003cb\u003egreater contrast of nebular objects\u003c\/b\u003e and the dimming of stars. The range of use covers focal ratios from 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The filter is intended for the observation of gaseous nebulae and planetary nebulae in cities and environments with light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. This results in an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the object being observed. Due to the wider Full Width at Half Maximum (FWHM), the contrast is lower than with the UHC filter, but the greater amount of light allows it to be used effectively even with small telescopes. The filter's transmission range includes an emission line found in the tails of comets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for the observation of Jupiter's clouds \u003c\/li\u003e \u003cli\u003eBetter separation of double stars \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows you to take photographs with DSLR cameras even in conditions of high light pollution without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes with an aperture of 5\" (125mm) or more, we recommend the UHC filter, which provides greater contrast enhancement. For apertures of 10'' (250mm) and above, you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): neutral, but a UHC filter is more suitable \u003c\/li\u003e \u003cli\u003eVisual observations (city): Excellent, for telescopes up to 125mm in aperture with medium magnification \u003c\/li\u003e \u003cli\u003eConventional film: good, but long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional anti-IR filter is required \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): good, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with MC clear glass): valid, but an additional anti-IR filter is required \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003emaximum transmission at approx. 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eResistant to moisture, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own case. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized for viewing objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted camera \u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003ebandwidth (nm): 480 - 505 \u0026amp; 645-700\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Canon EOS\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC XL Clip Filter for Canon EOS R\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003ebandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e480 - 505 \u0026amp; 645-700\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCanon EOS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter thickness (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eParfocal\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120621650136,"sku":"64938","price":239.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/4195ef05c8769ad381ea68ddd008e9e7_4c097c2d-6f1f-4078-b9e2-b5835b5c1876.jpg?v=1764068368"},{"product_id":"filtro-2-cls","title":"Astronomik 2\" CLS filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik 2\" CLS Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photography and observation in environments with artificial light pollution. It increases the contrast on all Deep-Sky objects.\u003cbr\u003e\u003cbr\u003eThe CLS filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between astronomical objects and the sky background. Thanks to the wide \u003cb\u003efull-width at half-maximum (FWHM)\u003c\/b\u003e, a large amount of light is allowed to pass through, and stars are only slightly dimmed. The CLS filter is therefore primarily used to block stray light while allowing light from objects to pass through. It can be used profitably for visual observations with aperture ratios from 1:2 to 1:15 with telescopes starting from 2\" (50mm) in aperture, and for CCD, DSLR, and color film photography with lenses and telescopes of all diameters.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) as well as the lines of night airglow. \u003cb\u003eAll emission lines of astronomical objects\u003c\/b\u003e and the spectral ranges in which the eye has maximum sensitivity at night \u003cb\u003eare allowed to pass through\u003c\/b\u003e.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvice for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf there is no IR-cut filter in electronic photography, a CLS-CCD filter is required.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eFor visual observation (rural): valid for environments with light pollution from mercury vapor lamps \u003c\/li\u003e \u003cli\u003eFor visual observation (city): valid, but a UHC-E or UHC filter is more suitable \u003c\/li\u003e \u003cli\u003eConventional film: excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): valid, some color shift but better contrast \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (modified for astronomical use): excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (with clear glass MC): valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for Deep Sky): excellent, if light pollution is a serious problem \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e92% transmissivity at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e92% transmissivity at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e92% transmissivity at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e97% transmissivity at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003eTransmissivity from 450nm to 540nm and above 650nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture resistant, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in a durable package \u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and fulfilling observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: CLS\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: Broadband filters\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik 2\" CLS filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCategory\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCLS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120622207192,"sku":"16746","price":153.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/ed33345fe40e753af6ec13775903f683.jpg?v=1764068374"},{"product_id":"filtro-2-cls-ccd","title":"Astronomik 2\" CLS CCD filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik 2\" CLS CCD Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photography in environments with artificial light pollution using cameras that are also sensitive to infrared. It increases contrast for all Deep-Sky objects.\u003cbr\u003e\u003cbr\u003eThe CLS CCD filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between astronomical objects and the sky background. Thanks to its \u003cb\u003ehigh transmission\u003c\/b\u003e, a large amount of light is allowed through and stars are only slightly dimmed. This filter is optimized to block stray light as much as possible while letting the light from objects pass through. The filter can be used optimally with telescopes of all apertures with focal ratios from 1:2 to 1:5.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) and the airglow lines. \u003cb\u003eAll important emission lines of astronomical objects\u003c\/b\u003e and the spectral ranges in which the eye has maximum sensitivity at night \u003cb\u003eare allowed to pass\u003c\/b\u003e. The integrated anti-IR coating allows the use of digital cameras and webcams without their own IR filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvice for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance. In the 1.25\" and 2\" versions, it is also suitable for visual observation in environments with high light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf an IR filter is already available for electronic photography, we suggest using the more economical CLS filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): valid for environments with light pollution from mercury vapor lamps \u003c\/li\u003e \u003cli\u003eVisual observations (city): neutral, but a UHC-E or UHC filter is more suitable \u003c\/li\u003e \u003cli\u003eConventional film: excellent, color balance is excellent \u003c\/li\u003e \u003cli\u003eCCD astrophotography: excellent, high reduction of light pollution is achieved \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): valid, some color shift but better contrast \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): excellent, color balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear glass MC): excellent, color balance is excellent \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e95% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e97% transmission at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003e1. Transmission range from 450nm to 520nm \u003c\/li\u003e \u003cli\u003e2. Transmission range from 640nm to 690nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eResistant to humidity, non-aging and scratch-proof \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own case.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: CLS CCD\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik 2\" CLS CCD filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCLS CCD\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUse for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution protection\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120622469336,"sku":"16748","price":207.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/a9e574767a7403979ff7c81b66e4b131.jpg?v=1764068378"},{"product_id":"filtro-ccd-2-12nm-h-alpha","title":"Astronomik 2\" 12nm H-alpha CCD filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik 2\" 12nm H-alpha CCD filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for hydrogen nebula photography in environments with artificial light pollution or under dark skies. The contrast between objects shining in H-alpha light and the sky background is significantly increased.\u003cbr\u003e\u003cbr\u003eThe H-alpha filter increases the contrast between hydrogen nebulae and the sky background. With a narrow full-width at half-maximum (FWHM) combined with \u003cb\u003ehigh transmissivity\u003c\/b\u003e in the H-alpha line range, a superior contrast increase is achieved compared to wider bandwidth filters. The \u003cb\u003e12nm FWHM\u003c\/b\u003e is optimal for use with common CCD and CMOS sensors. Thanks to this FWHM, it is possible to use fast optics. The filter also offers \u003cb\u003enearly 100% transmissivity\u003c\/b\u003e, which cannot be achieved with narrower-band filters.\u003cbr\u003e\u003cbr\u003eIn large cities, photography with cooled CCD cameras is usually limited by darkness conditions. The use of very small FWHM values to improve the sky background prevents details in the observed object from emerging. Compared to very narrow-band filters, the 12nm H-alpha filter has the advantage of making guide stars findable with almost any camera equipped with a guide sensor. The range of application spans aperture ratios from 1:2.8 to 1:15 for lenses and telescopes of any diameter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) as well as airglow lines. The filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between objects shining in the H-alpha emission line and the sky background.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIn combination with OIII and SII CCD filters, it is possible to produce three-color photographs of emission-line objects even in locations with high light pollution, similar to the process used by the Hubble Space Telescope. Astronomik H-alpha filters are not suitable for observing the Sun!\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): not suitable \u003c\/li\u003e \u003cli\u003eVisual observation (city): not suitable \u003c\/li\u003e \u003cli\u003eConventional film: neutral, but long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: excellent, high contrast with H II emission nebulae is achieved \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): Good, however reduced H-alpha sensitivity compared to use with modified cameras \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): excellent, high contrast with H II emission nebulae is achieved \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with MC clear glass): excellent, high contrast with H II emission nebulae is achieved \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, high contrast with bright objects is achieved\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003etransmissivity of more than 97% at the H-Alpha line (656nm) \u003c\/li\u003e \u003cli\u003efull-width at half-maximum of 12nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003ecomplete blocking of all interfering wavelengths up to infrared\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003e \u003cb\u003eparfocal\u003c\/b\u003e with all other Astronomik filters \u003c\/li\u003e \u003cli\u003efilter thickness: 1mm \u003c\/li\u003e \u003cli\u003emoisture-resistant, non-aging, and scratch-proof \u003c\/li\u003e \u003cli\u003e \u003cb\u003epolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003ethe filter is shipped in its own storage case.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and fulfilling observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: H-alpha 12nm\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik 2\" 12nm H-alpha CCD filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-Alpha Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-alpha 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution blocking\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDaytime and twilight observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMercury\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eVenus\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMars\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120622567640,"sku":"16752","price":271.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/08eec4bfeec392051dae2cd9ee1c4519.jpg?v=1764068380"},{"product_id":"filtro-cls-sony-alfa-clip","title":"Astronomik CLS Filter for Sony Alpha Clip","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik CLS Filter for Sony Alpha Clip\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003e\u003cb\u003eA short guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which suppresses a large part of light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized to display objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter only lets light pass through in the H-beta, OIII, H-alpha, and SII lines. The suppression of the background brightness is significantly greater compared to a CLS; however, this filter only works with gas nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor advanced astrophotography use, we recommend the \u003cb\u003enarrowband filters for the OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep photos of faint objects even from locations with intense light pollution and a full Moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astro-modified\") cameras, we suggest the \u003cb\u003eAstronomik OWB\u003c\/b\u003e \u003cb\u003efilter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera so that it can also be used for daytime photography without having to reprocess every image.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Sony Alpha 7\/9\u003c\/li\u003e\n\n\u003cli\u003eSeries: CLS\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: Broadband Filters\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik CLS Filter Sony Alpha Clip\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCLS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120622665944,"sku":"53729","price":180.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/f5eefc83eff6f38852ab4ae149fb2289.jpg?v=1764068385"},{"product_id":"filtro-cls-xl-clip-canon-eos-r","title":"Astronomik CLS XL Clip Filter for Canon EOS R","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik CLS XL Clip Filter for Canon EOS R\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photography and observation in environments with artificial light pollution. It increases contrast for all Deep-Sky objects.\u003cbr\u003e\u003cbr\u003eThe CLS filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between astronomical objects and the sky background. Thanks to its wide \u003cb\u003eFull Width at Half Maximum (FWHM)\u003c\/b\u003e, a large amount of light is allowed to pass through, and stars are only slightly dimmed. The CLS filter is therefore primarily used to block stray light while allowing light from objects to pass through. It can be used effectively for visual observations with aperture ratios from 1:2 to 1:15 with telescopes starting from 2\" (50mm) aperture, as well as for CCD, DSLR, and film photography with lenses and telescopes of all diameters.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) as well as airglow lines. \u003cb\u003eAll emission lines of astronomical objects\u003c\/b\u003e and spectral ranges where the human eye is most sensitive at night \u003cb\u003eare allowed to pass through\u003c\/b\u003e.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf there is no IR-cut filter in the case of electronic photography, a CLS-CCD filter is required.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eFor visual observations (countryside): valid for environments with light pollution from mercury vapor lamps \u003c\/li\u003e \u003cli\u003eFor visual observations (city): valid, but a UHC-E or UHC filter is more recommended \u003c\/li\u003e \u003cli\u003eConventional film: excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): valid, some color shift but better contrast \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (modified for astronomical use): excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (with clear MC glass): valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for Deep Sky): excellent, if light pollution is a serious problem \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical filter data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e92% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e92% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e92% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e97% transmission at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003eTransmission from 450nm to 540nm and above 650nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eResistant to humidity, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in durable packaging \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR-blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Canon EOS\u003c\/li\u003e\n\n\u003cli\u003eSeries: CLS\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik CLS XL Clip Filter for Canon EOS R\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCanon EOS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCLS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120622731480,"sku":"64981","price":180.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/377efcf1e228ef185ad3ac823ac25be7_6f29cb2b-8944-4d5b-b9d4-eb0a3729cabe.jpg?v=1764068385"},{"product_id":"filtro-filro-1-25-cls","title":"Astronomik 1.25\" CLS Filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik 1.25\" CLS Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photography and observation in environments with artificial light pollution. It increases contrast for all Deep-Sky objects.\u003cbr\u003e\u003cbr\u003eThe CLS filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between astronomical objects and the sky background. Thanks to the wide \u003cb\u003eFull Width at Half Maximum (FWHM)\u003c\/b\u003e, a large amount of light is allowed to pass through, and stars are only slightly dimmed. The CLS filter is therefore primarily used to block stray light while allowing light from objects to pass through. It can be used profitably for visual observations with aperture ratios from 1:2 to 1:15 with telescopes starting from 2\" (50mm) aperture, and for CCD, DSLR, and color film photography with lenses and telescopes of all diameters.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and night luminescence lines (airglow). \u003cb\u003eAll emission lines of astronomical objects\u003c\/b\u003e and the spectrum ranges where the eye has maximum sensitivity at night \u003cb\u003eare allowed to pass through\u003c\/b\u003e.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras, even in conditions of high light pollution, without compromising color balance.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf there is no IR-cut filter in electronic photography, a CLS-CCD filter is required.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eFor visual observation (rural\/countryside): effective for environments with light pollution from mercury vapor lamps \u003c\/li\u003e \u003cli\u003eFor visual observation (city): effective, but a UHC-E or UHC filter is more recommended \u003c\/li\u003e \u003cli\u003eConventional film: excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eCCD astrophotography: effective, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): effective, some color shift but better contrast \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (modified for astronomical use): excellent, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (with clear MC glass): effective, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for Deep Sky): excellent, if light pollution is a serious problem\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical data of the filter:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e92% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e92% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e92% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e97% transmission at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003eTransmission from 450nm to 540nm and above 650nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture-resistant, non-aging, and scratch-proof \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in a durable storage box\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey Features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: Multi-coated\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eSize: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: CLS\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: Broadband Filters\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain Technical Specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik 1.25\" CLS Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSize\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCLS\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDaytime and twilight observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMoon\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMercury\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eVenus\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMars\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120622764248,"sku":"16745","price":71.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/e1b7c0481a84dc9102b5379beab46ee2.jpg?v=1764068386"},{"product_id":"filtro-h-alfa-12-nm-ccd-sony-alfa-clip","title":"Astronomik H-alpha 12nm CCD Filter for Sony Alpha Clip","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik H-alpha 12 nm CCD Filter for Sony Alpha Clip\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003e\u003cb\u003eA quick guide to help you choose:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which suppresses most light pollution and natural airglow. The result will be skies with a dark background, allowing for longer exposure times, which makes even the faintest objects visible. The filter is optimized to display objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter is necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter allows only light in the H-beta, OIII, H-alpha, and SII lines to pass through. Background brightness suppression is significantly greater than with a CLS; however, this filter only works for gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor in-depth astrophotography, we recommend \u003cb\u003enarrowband filters for OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep photos of faint objects even from locations with intense light pollution and a full moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astro-modified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera so that it can also be used for daytime photography without having to reprocess every image.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Sony Alpha 7\/9\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik H-alpha 12 nm CCD Filter for Sony Alpha Clip\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-Alpha Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eParfocal\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-alpha 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120622895320,"sku":"53748","price":307.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/9d947480ff7f262ffb2250958a7c8095_1b37197a-d255-4970-a034-041211e3ed93.jpg?v=1764068391"},{"product_id":"filtro-h-beta-1-25","title":"Astronomik H-beta Filter 1.25”","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik H-beta Filter 1.25”\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter has been designed for observations in the H-beta regions under dark skies. It increases the contrast between objects in the H-beta line, in which most hydrogen nebulae shine, and the sky background.\u003cbr\u003e\u003cbr\u003eThe H-beta filter \u003cb\u003eincreases the contrast\u003c\/b\u003e between hydrogen nebulae and the sky background, to such an extent that for H-beta emission ranges, you see an \u003cb\u003eenormous increase in contrast\u003c\/b\u003e compared to UHC filters. Objects such as the Horsehead Nebula can be observed with this filter. It can be used effectively for visual observations at medium magnifications with focal ratios from 1:3.5 to 1:15 with telescopes of 10'' (250mm) aperture, and for photography with lenses and telescopes of all diameters.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. The H-beta line passes through the filter with high transmissivity.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThere are only a few objects in the entire sky that benefit from the filter for visual observations. As an EOS Clip filter, it allows for photography in cities with DSLR cameras, even in conditions of high light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf there is no IR-cut filter in the case of electronic photography, an H-beta CCD filter is required.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cp\u003eVisual observations (countryside): excellent, but few observation objects \u003c\/p\u003e\n\n\u003cp\u003eVisual observations (city): not suitable \u003c\/p\u003e\n\n\u003cp\u003eConventional film: partially suitable, long exposure times \u003c\/p\u003e\n\n\u003cp\u003eCCD astrophotography: valid, but an additional IR-cut filter is required \u003c\/p\u003e\n\n\u003cp\u003eDSLR astrophotography (unmodified): excellent, but few objects to photograph \u003c\/p\u003e\n\n\u003cp\u003eDSLR astrophotography (astronomically modified): excellent, but few objects to photograph \u003c\/p\u003e\n\n\u003cp\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-cut filter is required \u003c\/p\u003e\n\n\u003cp\u003eWebcam \/ Video (for planets): not suitable \u003c\/p\u003e\n\n\u003cp\u003eWebcam \/ Video (Deep Sky): not suitable \u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eTechnical filter data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cp\u003e97% transmissivity at 486nm (H-beta) \u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eFull Width at Half Maximum (FWHM) 12nm\u003c\/b\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003e\u003c\/b\u003eBlocking from 370nm to 470nm and from 500nm to 700nm \u003c\/p\u003e \u003cp\u003e\u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/p\u003e\n\n\u003cp\u003eFilter thickness: 1mm \u003c\/p\u003e\n\n\u003cp\u003eHumidity-resistant, non-aging, and scratch-resistant \u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003e\u003c\/b\u003eThe filter is shipped in its own storage case.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eSeries: H-beta\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik H-beta Filter 1.25”\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-Beta Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-beta\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120622960856,"sku":"24077","price":89.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/0074c438f96f9f84bc72d20c0c523317.jpg?v=1764068393"},{"product_id":"filtro-oiii-1-25","title":"Astronomik OIII 1.25\" filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII filter 1.25\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for photography and observation of OIII regions in environments with artificial light pollution or in dark sky locations. The \u003cb\u003econtrast between objects\u003c\/b\u003e that shine in OIII light and the sky background \u003cb\u003eis significantly increased\u003c\/b\u003e.\u003cbr\u003e\u003cbr\u003eThe OIII filter increases the contrast between certain astronomical objects (especially supernova remnants and planetary nebulae) and the sky background. With a \u003cb\u003enarrow Full Width at Half Maximum (FWHM)\u003c\/b\u003e associated with \u003cb\u003ehigh transmissivity\u003c\/b\u003e in the range of the OIII lines, a higher contrast increase is achieved compared to filters with a wider bandwidth. It can be used with optimal results with focal ratios from 1:3 to 1:15 with telescopes starting from 6\" (150mm) aperture for visual observations at medium magnifications, and with lenses and telescopes of any diameter for CCD, DSLR, and film astrophotography (see alternatives).\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) and the lines of airglow. Both OIII lines pass through the filter with high transmissivity.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in cities, even under high light pollution conditions. In combination with H-alpha and SII CCD filters, you can take three-color photographs of emission line objects even in locations with high light pollution, similar to the Hubble Space Telescope.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf there is no IR-cut filter when using electronic photography, an OIII CCD filter is necessary.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): excellent, high contrast is obtained with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eVisual observations (city): excellent, high contrast is obtained with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eConventional film: partly suitable, long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): excellent, high contrast is obtained with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): excellent, high contrast is obtained with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): neutral, if light pollution is a serious problem and OIII emission nebulae are being photographed \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical data of the filter:\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e93% transmissivity at 501nm (OIII line) \u003c\/li\u003e \u003cli\u003e \u003cb\u003eFull Width at Half Maximum 12nm\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture-resistant, non-aging, and scratch-proof \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage case.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: OIII\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII filter 1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution protection\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120623059160,"sku":"16758","price":89.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/b23907bbecbd07dbc401be6075e341f7.jpg?v=1764068396"},{"product_id":"filtro-oiii-2","title":"Astronomik OIII 2\" filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 2\" filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for both photography and observation of OIII regions in environments with artificial light pollution or under dark skies. The \u003cb\u003econtrast between objects\u003c\/b\u003e that glow in OIII light and the sky background \u003cb\u003eis significantly increased\u003c\/b\u003e.\u003cbr\u003e\u003cbr\u003eThe OIII filter increases the contrast between certain astronomical objects (especially supernova remnants and planetary nebulae) and the sky background. With a \u003cb\u003enarrow Full Width at Half Maximum (FWHM)\u003c\/b\u003e combined with \u003cb\u003ehigh transmission\u003c\/b\u003e in the OIII line range, a superior contrast boost is achieved compared to filters with wider bandwidths. It can be used with the best results at aperture ratios from 1:3 to 1:15 with telescopes from 6\" (150mm) aperture for visual observations at medium magnifications, and with lenses and telescopes of any diameter for CCD, DSLR, and film astrophotography (see alternatives).\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low- and high-pressure lamps (mercury (Hg) and sodium (Na)) as well as airglow lines. Both OIII lines pass through the filter with high transmission.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips for other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in cities with high light pollution. In combination with H-alpha and SII CCD filters, you can take three-color photographs of emission-line objects even in places with high light pollution, similar to the Hubble Space Telescope.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf there is no IR-cut filter for electronic photography, an OIII CCD filter is required.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eVisual observation (city): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eConventional film: partially suitable, long exposure times required \u003c\/li\u003e \u003cli\u003eCCD astrophotography: good, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with MC clear glass): good, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): neutral, if light pollution is a serious problem and OIII emission nebulae are being photographed \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e93% transmission at 501nm (OIII line) \u003c\/li\u003e \u003cli\u003e \u003cb\u003eFull Width at Half Maximum 12nm\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture-resistant, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage box.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eMounting material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: OIII\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 2\" filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII-filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMounting material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eline filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120623321304,"sku":"16759","price":180.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/24d27c24728bad485a53c53e7cfa31f9.jpg?v=1764068404"},{"product_id":"filtro-oiii-6nm-ccd-1-25","title":"Astronomik OIII 6nm CCD 1.25\" Filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 6nm CCD Filter 1.25\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the OIII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is suitable for photographing hydrogen nebulae from locations with light pollution, but also from areas with dark skies. The contrast between objects emitting at 501nm and the background is extremely enhanced. \u003c\/p\u003e \u003cp\u003eT\u003cb\u003ehe OIII CCD filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and a high transmission of 96%, the filter ensures a significant increase in contrast, as all unwanted light from wavelengths other than xx is blocked from UV to IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6 nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled cameras\u003c\/b\u003e). 6 nm filters are the best choice if you are observing from a location with particularly intense light pollution or generally when imaging faint objects in very star-rich areas of the sky. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eMoisture-resistant, wear-resistant, and scratch-proof \u003c\/li\u003e \u003cli\u003eOptically polished substrate free of streaks and residual stresses\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with the H-alpha CCD and SII CCD filters, you can capture emission line images in three colors (HSO) of celestial objects just like the Hubble Telescope. This is possible even from locations with high light pollution.This filter is suitable for photographing hydrogen nebulae from locations with light pollution, but also from areas with dark skies. The contrast between objects emitting at 501nm and the background is extremely enhanced. \u003c\/p\u003e \u003cp\u003eT\u003cb\u003ehe OIII CCD filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and a high transmission of 96%, the filter ensures a significant increase in contrast, as all unwanted light from wavelengths other than xx is blocked from UV to IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6 nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled cameras\u003c\/b\u003e). 6 nm filters are the best choice if you are observing from a location with particularly intense light pollution or generally when imaging faint objects in very star-rich areas of the sky. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eMoisture-resistant, wear-resistant, and scratch-proof \u003c\/li\u003e \u003cli\u003eOptically polished substrate free of streaks and residual stresses\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with the H-alpha CCD and SII CCD filters, you can capture emission line images in three colors (HSO) of celestial objects just like the Hubble Telescope. This is possible even from locations with high light pollution.\u003c\/p\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e feature an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly developed MFR technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrow-band filters with FWHM 12 nm are interest\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 501\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 6nm CCD Filter 1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e501\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eGalaxies and star clusters\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution control\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120623386840,"sku":"46796","price":180.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/9f75e947a3e8dc0505e9fe996a15f97b.jpg?v=1764068404"},{"product_id":"filtro-oiii-6nm-ccd-36mm","title":"Astronomik OIII 6nm CCD Filter 36mm","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 6nm CCD Filter 36mm\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the OIII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is suitable for photographing hydrogen nebulae from observation sites with light pollution, as well as from areas with dark skies. The contrast between objects emitting at 501nm and the background is extremely enhanced. \u003c\/p\u003e \u003cp\u003eTh\u003cb\u003ee OIII CCD filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and high 96% transmission, the filter ensures a significant increase in contrast, as all unwanted light from wavelengths other than the target is blocked from the UV to the IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6 nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled camera\u003c\/b\u003e). The 6 nm filters are the best choice if you are observing from a location with particularly intense light pollution or generally when shooting faint objects in areas of the sky that are very rich in stars. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eResistant to moisture, wear, and scratching \u003c\/li\u003e \u003cli\u003eOptically polished substrate free from streaks and internal stresses\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with the H-alpha CCD and SII CCD filters, you can take emission line images in three colors (HSO) of celestial objects, just like the Hubble telescope. This is possible even from locations with high light pollution.This filter is suitable for photographing hydrogen nebulae from observation sites with light pollution, as well as from areas with dark skies. The contrast between objects emitting at 501nm and the background is extremely enhanced. \u003c\/p\u003e \u003cp\u003eTh\u003cb\u003ee OIII CCD filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and high 96% transmission, the filter ensures a significant increase in contrast, as all unwanted light from wavelengths other than the target is blocked from the UV to the IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6 nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled camera\u003c\/b\u003e). The 6 nm filters are the best choice if you are observing from a location with particularly intense light pollution or generally when shooting faint objects in areas of the sky that are very rich in stars. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eResistant to moisture, wear, and scratching \u003c\/li\u003e \u003cli\u003eOptically polished substrate free from streaks and internal stresses\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with the H-alpha CCD and SII CCD filters, you can take emission line images in three colors (HSO) of celestial objects, just like the Hubble telescope. This is possible even from locations with high light pollution.\u003c\/p\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly developed MFRF technology, it is possible to use the filter with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrow-band filters with 12 nm FWHM are intere\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 501\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Ring\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 6\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 6nm CCD Filter 36mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII-Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e501\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eRing\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMRF\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter size (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eGalaxies and star clusters\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution filter\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCan be used for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120623485144,"sku":"63221","price":271.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/32e2d8212a78ff250a57dc4ea606cf94.jpg?v=1764068408"},{"product_id":"filtro-oiii-6nm-ccd-2","title":"Astronomik OIII 6nm CCD 2\" Filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 6nm CCD 2\" Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the OIII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is suitable for photographing hydrogen nebulae from locations with light pollution, as well as from dark sky sites. The contrast between objects emitting at 501nm and the background is extremely enhanced. \u003c\/p\u003e \u003cp\u003eT\u003cb\u003ehe CCD OIII filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and a high transmission of 96%, the filter ensures a remarkable increase in contrast, as all unwanted light from wavelengths other than the target is blocked from the UV to the IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6 nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled cameras\u003c\/b\u003e). 6 nm filters are the best choice if you are observing from a location with particularly intense light pollution or generally when shooting faint objects in very star-rich areas of the sky. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eResistant to moisture, wear, and scratching \u003c\/li\u003e \u003cli\u003eOptically polished substrate, free of streaks and residual stress\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with H-alpha CCD and SII CCD filters, you can take emission line images in three colors (HSO) of celestial objects, just like the Hubble Telescope. This is possible even from locations with high light pollution.This filter is suitable for photographing hydrogen nebulae from locations with light pollution, as well as from dark sky sites. The contrast between objects emitting at 501nm and the background is extremely enhanced. \u003c\/p\u003e \u003cp\u003eT\u003cb\u003ehe CCD OIII filter enhances the contrast between hydrogen nebulae and the background sky\u003c\/b\u003e. Thanks to the combination of a 6nm narrow band and a high transmission of 96%, the filter ensures a remarkable increase in contrast, as all unwanted light from wavelengths other than the target is blocked from the UV to the IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6 nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled cameras\u003c\/b\u003e). 6 nm filters are the best choice if you are observing from a location with particularly intense light pollution or generally when shooting faint objects in very star-rich areas of the sky. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComplete blocking of radiation from UV to infrared \u003c\/li\u003e \u003cli\u003eParfocal with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eResistant to moisture, wear, and scratching \u003c\/li\u003e \u003cli\u003eOptically polished substrate, free of streaks and residual stress\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe filter is shipped in \u003cb\u003edurable packaging\u003c\/b\u003e \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTip\u003c\/b\u003e: with H-alpha CCD and SII CCD filters, you can take emission line images in three colors (HSO) of celestial objects, just like the Hubble Telescope. This is possible even from locations with high light pollution.\u003c\/p\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003ephotographic CCD filters\u003c\/b\u003e come with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly developed MFR technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrow-band filters with 12 nm FWHM are interest\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCentral wavelength (nm): 501\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 6\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 6nm CCD 2\" Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII-filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCentral wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e501\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eGalaxies and star clusters\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120623517912,"sku":"46797","price":443.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/363809d17a6f918d9cbc77307760a7cb.jpg?v=1764068408"},{"product_id":"filtro-sii-6nm-ccd-1-25","title":"Astronomik SII 6nm CCD Filter 1.25\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik SII 6nm CCD 1.25\" Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the SII 6nm CCD series... \u003c\/p\u003e\n\n\u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly developed MFR technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternative\u003c\/b\u003e: narrowband filters with 12 nm FWHM are interesting in combination with a DSLR or CCD camera with high dark current. 12 nm filters are also the best choice if your camera is equipped with an integrated guiding chip, as they allow you to capture twice as many stars.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eA brief guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which blocks most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which also make fainter objects visible. The filter is optimized to display objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the simple CLS filter does not have an integrated IR blocker. Therefore, for a converted (\"astromodified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in places with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter allows only light in the H-beta, OIII, H-alpha, and SII lines to pass through. The reduction of background brightness is significantly greater than with a CLS; however, this filter only works with gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor advanced astrophotography, we recommend the \u003cb\u003enarrowband filters for the OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep photos of faint objects even from places with intense light pollution and a full moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astromodified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera so that it can also be used for daytime photography, without having to reprocess all the images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 6\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: MFR\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 672\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik SII 6nm CCD 1.25\" Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMFR\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e672\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120623583448,"sku":"63180","price":180.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/e7ac9590ef858cc9aa63920b6b845e24.jpg?v=1764068411"},{"product_id":"filtro-uhc-1-25","title":"Astronomik UHC Filter 1.25\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC Filter 1.25\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the UHC series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is \u003cb\u003esuitable for visual observation in environments with light pollution\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Excellent for observing comets! You also achieve \u003cb\u003egreater contrast of nebular objects\u003c\/b\u003e and a dimming of the stars. The field of use ranges from focal ratios of 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The scope of use for the filter is the observation of gaseous nebulae and planetary nebulae in cities and environments with light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) as well as lines from airglow. As a result, you get an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the object being observed. Due to the wide full-width half-maximum, the contrast is reduced compared to the UHC filter, but the greater amount of light allows for beneficial use even with small telescopes. The transmission range of the filter includes an emission line found in the tails of comets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for the observation of Jupiter's clouds. \u003c\/li\u003e \u003cli\u003eBetter separation of double stars. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows you to take photographs with DSLR cameras even in conditions of high light pollution without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes with an aperture of 5\" (125mm) or larger, we recommend the UHC filter, which provides greater contrast. For apertures of 10'' (250mm) and above, you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter Features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): neutral, but a UHC filter is more suitable \u003c\/li\u003e \u003cli\u003eVisual observations (city): Excellent, for telescopes up to 125mm aperture with medium magnifications \u003c\/li\u003e \u003cli\u003eConventional film: good, but long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional anti-IR filter is necessary \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): good, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional anti-IR filter is necessary \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter Technical Data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003emaximum transmission at approximately 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eResistant to moisture, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own case. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which blocks a large part of light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even fainter objects visible. The filter is optimized to display objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the simple CLS filter does not have an integrated IR block. Therefore, for a converted camera \u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eOptic coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eMounting material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 480-505 \u0026amp; 645-700\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC Filter 1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptic coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMounting material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e480-505 \u0026amp; 645-700\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e97\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution blocking\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120623943896,"sku":"16765","price":89.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/c31eeb51da3b5b33af4540fbd3440ea4.jpg?v=1764068418"},{"product_id":"filtro-uhc-2","title":"Astronomik UHC Filter 2\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC Filter 2\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the UHC series... \u003c\/p\u003e\n\n\u003cp\u003eThis filter is \u003cb\u003esuitable for visual observation in light-polluted environments\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Exceptional for observing comets! Furthermore, \u003cb\u003egreater contrast of nebular objects\u003c\/b\u003e and attenuation of stars are achieved. The field of use ranges from focal ratios of 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The scope of use for the filter is the observation of gas nebulae and planetary nebulae in cities and light-polluted environments.\u003cbr\u003e \u003cbr\u003e \u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e \u003cbr\u003e The filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. As a result, you get an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the object being observed. Due to the wide full-width at half-maximum, the contrast is lower compared to the UHC filter, but the greater amount of light allows for profitable use even with small telescopes. The transmission range of the filter includes an emission line found in comet tails.\u003cbr\u003e \u003cbr\u003e \u003cb\u003eTips and other usage modes\u003c\/b\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures.\u003c\/li\u003e \u003cli\u003eExperimental for the observation of Jupiter's clouds\u003c\/li\u003e \u003cli\u003eBetter separation of double stars\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand\u003c\/p\u003e \u003cp\u003e As an EOS Clip filter, it allows you to take photographs with DSLR cameras even under conditions of high light pollution without compromising color balance.\u003c\/p\u003e \u003cp\u003e \u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e \u003cbr\u003e For telescopes with an aperture of 5\" (125mm) or more, we recommend the UHC filter, which provides greater contrast enhancement. With apertures of 10'' (250mm) or more, you can also use the OIII filter.\u003cbr\u003e \u003cbr\u003e \u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): neutral, but a UHC filter is more suitable\u003c\/li\u003e \u003cli\u003eVisual observations (city): Excellent, for telescopes up to 125mm aperture with medium magnification\u003c\/li\u003e \u003cli\u003eConventional film: good, but long exposure times\u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required\u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent\u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): good, white balance is excellent\u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-cut filter is required\u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable\u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta)\u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII)\u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII)\u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H alpha)\u003c\/li\u003e \u003cli\u003e\u003cb\u003emaximum transmission at approximately 95% \u003c\/b\u003e\u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm\u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters\u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm\u003c\/li\u003e \u003cli\u003eMoisture-resistant, non-aging, and scratch-resistant\u003c\/li\u003e \u003cli\u003e\u003cb\u003ePolished optical material\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own case.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA brief guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even fainter objects visible. The filter is optimized to display objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR-blocker. Therefore, for a converted camera\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-layer\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003ebandwidth (nm): 480-505 \u0026amp; 645-700\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC Filter 2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-layer\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003ebandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e480-505 \u0026amp; 645-700\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e97\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution protection\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120624009432,"sku":"16766","price":180.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/95457a239225ef32f365a7ecde49d4fb.jpg?v=1764068419"},{"product_id":"filtro-uhc-36-mm-con-montatura-1","title":"Astronomik UHC filter 36 mm mounted","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC 36 mm filter mounted\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is \u003cb\u003esuitable for visual observation in light-polluted environments\u003c\/b\u003e. Even with small telescopes, it enhances the contrast between emission nebulae and the sky background. Exceptional for observing comets! In addition, you get \u003cb\u003egreater contrast of nebular objects\u003c\/b\u003e and the dimming of stars. The range of application spans aperture ratios from 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The filter's scope of use is observing gaseous nebulae and planetary nebulae in cities and light-polluted environments.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) and the lines of airglow. This results in an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the object being observed. Due to the wide full-width at half-maximum (FWHM), the contrast is reduced compared to the UHC filter, but the greater amount of light allows it to be used profitably even with small telescopes. The transmission range of the filter includes an emission line found in the tails of comets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for the observation of Jupiter's clouds. \u003c\/li\u003e \u003cli\u003eBetter separation of double stars. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows you to take photographs with DSLR cameras even in conditions of high light pollution without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes from 5\" (125mm) aperture and up, we recommend the UHC filter, which increases contrast more. With apertures from 10'' (250mm), you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): neutral, but a UHC filter is more suitable. \u003c\/li\u003e \u003cli\u003eVisual observations (city): Excellent, for telescopes up to 125mm aperture with medium magnification. \u003c\/li\u003e \u003cli\u003eConventional film: good, but long exposure times. \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is necessary. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astromodified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with MC clear glass): valid, but an additional IR-cut filter is necessary. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003emaximum transmission at approximately 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture resistant, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage box.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out much of the light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized for viewing objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the simple CLS filter does not have a built-in IR block. Therefore, for a converted (\"astromodified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in places with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and fulfilling observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eFrame: Ring\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFilter dimensions (mm): 36\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 465 - 530 \u0026amp; \u0026gt;645\u003c\/li\u003e\n\n\u003cli\u003eSeries: UHC-E\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC 36 mm filter mounted\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eRing\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter dimensions (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e465 - 530 \u0026amp; \u0026gt;645\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC-E\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120624107736,"sku":"52904","price":86.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/762b5005740d11d5a9fe76b0326e8c61.jpg?v=1764068423"},{"product_id":"filtro-uhc-e-1-25","title":"Astronomik UHC-E Filter 1.25\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC-E Filter 1.25\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is \u003cb\u003esuitable for visual observation in environments with light pollution\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Excellent for observing comets! You also achieve \u003cb\u003egreater contrast of nebular objects\u003c\/b\u003e and the dimming of stars. The range of use spans from focal ratios of 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The filter is intended for the observation of gaseous nebulae and planetary nebulae in cities and light-polluted environments.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. As a result, you get an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the object being observed. Due to the wide full-width at half-maximum (FWHM), the contrast is reduced compared to the UHC filter, but the greater amount of light allows it to be used profitably even with small telescopes. The transmission range of the filter includes an emission line found in the tails of comets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvice and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for the observation of Jupiter's clouds \u003c\/li\u003e \u003cli\u003eBetter separation of double stars \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eand \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in high light pollution conditions without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes from 5\" (125mm) in aperture, we recommend the UHC filter, which provides greater contrast enhancement. With apertures from 10'' (250mm) and above, you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter Features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): neutral, but a UHC filter is more suitable \u003c\/li\u003e \u003cli\u003eVisual observation (city): Excellent, for telescopes up to 125mm aperture with medium magnification \u003c\/li\u003e \u003cli\u003eConventional film: good, but long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): good, white balance is excellent \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-cut filter is required \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter Technical Data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmissivity at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmissivity at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmissivity at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmissivity at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003emaximum transmissivity at about 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eMoisture-resistant, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own storage box. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out most light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized to display objects in natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR-block. Therefore, for a converted (\"astromodified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in places with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve \u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 465 - 530 \u0026amp; \u0026gt;645\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC-E Filter 1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e465 - 530 \u0026amp; \u0026gt;645\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eParfocal\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC-E\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120624140504,"sku":"16767","price":68.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/6503b77a71b25b46e6a1cdc35e5c92bd.jpg?v=1764068423"},{"product_id":"filtro-uhc-e-2","title":"Astronomik UHC-E Filter 2\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC-E Filter 2\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is \u003cb\u003esuitable for visual observation in light-polluted environments\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Exceptional for comet observation! Furthermore, you achieve \u003cb\u003egreater contrast for nebular objects\u003c\/b\u003e and an attenuation of stars. The range of use covers focal ratios from 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The filter is intended for observing gaseous nebulae and planetary nebulae in cities and light-polluted environments.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. This results in an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the object being observed. Due to the wide full-width at half-maximum (FWHM), the contrast is reduced compared to the UHC filter, but the greater light throughput allows for profitable use even with small telescopes. The transmission range of the filter includes an emission line found in the tails of comets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for observing Jupiter's clouds. \u003c\/li\u003e \u003cli\u003eBetter separation of double stars. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003ee \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes with an aperture of 5\" (125mm) or larger, we recommend the UHC filter, which provides greater contrast enhancement. With apertures of 10'' (250mm) or more, you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): neutral, but a UHC filter is more suitable. \u003c\/li\u003e \u003cli\u003eVisual observations (city): Excellent, for telescopes up to 125mm aperture with medium magnification. \u003c\/li\u003e \u003cli\u003eConventional film: good, but requires long exposure times. \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-block filter is necessary. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astromodified): good, white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-block filter is necessary. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent, if light pollution is a serious problem. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical data of the filter:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003emaximum transmission at approximately 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm. \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters. \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eResistant to humidity, non-aging, and scratch-resistant. \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its own case. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA small guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which blocks most light pollution and natural airglow. The result will be skies with a dark background, allowing for longer exposure times, which makes even fainter objects visible. The filter is optimized for viewing objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted (\"astromodified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey Features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 465 - 530 \u0026amp; \u0026gt;645\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain Technical Specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC-E Filter 2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e465 - 530 \u0026amp; \u0026gt;645\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC-E\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution blocking\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120624271576,"sku":"16768","price":126.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/a5fdf20b1dce417d0a4d7ecf45676ac5.jpg?v=1764068426"},{"product_id":"filtro-uhc-e-sony-alfa-clip","title":"Astronomik UHC-E Filter for Sony Alpha Clip","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik UHC-E Filter for Sony Alpha Clip\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is \u003cb\u003esuitable for visual observation in environments with light pollution\u003c\/b\u003e. Even with small telescopes, the contrast between emission nebulae and the sky background is enhanced. Exceptional for comet observation! Furthermore, it provides \u003cb\u003egreater contrast for nebular objects\u003c\/b\u003e and dims the stars. The range of use spans focal ratios from 1:3 to 1:15 for telescopes up to 5'' (125mm) in aperture. The filter is intended for the observation of gas nebulae and planetary nebulae in cities and environments with light pollution.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) as well as airglow lines. This results in an \u003cb\u003eincrease in contrast\u003c\/b\u003e between the sky background and the observed object. Due to the wide full width at half maximum (FWHM), the contrast is reduced compared to the UHC filter, but the greater light throughput allows for profitable use even with small telescopes. The transmission range of the filter includes an emission line found in comet tails.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003ePerfect for observing comets in the city with telescopes of all apertures. \u003c\/li\u003e \u003cli\u003eExperimental for the observation of Jupiter's clouds. \u003c\/li\u003e \u003cli\u003eBetter separation of double stars. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003ee \u003c\/p\u003e \u003cp\u003eAs an EOS Clip filter, it allows for photography with DSLR cameras even in conditions of high light pollution without compromising color balance. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eFor telescopes with an aperture of 5\" (125mm) or greater, we recommend the UHC filter, which provides a greater increase in contrast. For apertures of 10'' (250mm) or more, you can also use the OIII filter.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter Characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): neutral, but a UHC filter is more suitable. \u003c\/li\u003e \u003cli\u003eVisual observation (city): Excellent for telescopes up to 125mm aperture with medium magnification. \u003c\/li\u003e \u003cli\u003eConventional film: good, but requires long exposure times. \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-cut filter is necessary. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): good, the white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astro-modified): good, the white balance is excellent. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): valid, but an additional IR-cut filter is necessary. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): not suitable. \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): excellent if light pollution is a serious problem. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter Technical Data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e94% transmission at 486nm (H-beta) \u003c\/li\u003e \u003cli\u003e95% transmission at 496nm (OIII) \u003c\/li\u003e \u003cli\u003e95% transmission at 501nm (OIII) \u003c\/li\u003e \u003cli\u003e88% transmission at 656nm (H-alpha) \u003c\/li\u003e \u003cli\u003e \u003cb\u003eMaximum transmission at approximately 95% \u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eTransmission range from 465nm to 530nm and 645nm+ \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eResistant to humidity, non-aging, and scratch-resistant \u003c\/li\u003e \u003cli\u003e \u003cb\u003ePolished optical material\u003c\/b\u003e \u003c\/li\u003e \u003cli\u003eThe filter is shipped in its protective case. \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eA quick guide to choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out most light pollution and natural airglow. The result will be skies with a dark background, allowing for longer exposure times, which makes even fainter objects visible. The filter is optimized to display objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the basic CLS filter does not have an integrated IR-blocker. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter will be necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey Features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for: Sony Alpha 7\/9\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eBandpass (nm): 465 - 530 \u0026amp; \u0026gt;645\u003c\/li\u003e\n\n\u003cli\u003eSeries: UHC-E\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain Technical Specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik UHC-E Filter for Sony Alpha Clip\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for:\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBandpass (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e465 - 530 \u0026amp; \u0026gt;645\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC-E\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technology\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUHC Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping across Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120624369880,"sku":"53728","price":144.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/7b1c6d5af41e38eb2fe99a73f718974d.jpg?v=1764068429"},{"product_id":"filtro-l-rgb-2","title":"Astronomik L-RGB Filter 2\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik L-RGB 2\" Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eFilter set suitable for astrophotography with CCD cameras. These filters allow for \u003cb\u003echromatically neutral image rendering\u003c\/b\u003e of planets, stars, and emission and reflection nebulae.\u003cbr\u003e\u003cbr\u003eThe transmission characteristics of the L-RGB TYP 2c filters are optimized for CCD astrophotography: with this set, you finally have filters that \u003cb\u003eallow you to photograph all objects in their natural colors\u003c\/b\u003e. Both continuous emission objects and objects emitting only single lines can be rendered in their actual coloration. You get CCD photographs that show the object in optimal colors, exactly as you would see it with the naked eye, if the eye were sensitive enough.\u003cbr\u003e\u003cbr\u003eThis filter set has been designed with special attention to:\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003esimple color separation processing \u003c\/li\u003e \u003cli\u003emaximum transmission (close to 100%) to obtain the shortest possible exposure times \u003c\/li\u003e \u003cli\u003ehigh transmission in H-beta, OIII, and H-alpha \u003c\/li\u003e \u003cli\u003etransmission of individual filters adapted for optimal color rendering \u003c\/li\u003e \u003cli\u003euse of industry standards\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThanks to the careful processing of the substrate, manufactured individually filter by filter and not on the entire plate, not only is \u003cb\u003eparfocality\u003c\/b\u003e guaranteed, but distortions are also reduced far beyond normal tolerance limits. So as not to be the weak link in a quality optical system, the astronomical filters are obviously diffraction-limited. There are no longer issues related to the focus point or the correct image position of individual color separations.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe L-RGB filter set divides the defined spectrum into its red, green, blue, and luminance components. Because of this, you can obtain color separations with b\/w sensors that correspond to the color vision of the human eye according to DIN 5032. Thanks to the sRGB color space defined in 1996, it is possible to maintain true colors throughout the entire production process, from image capture to processing and display. Monitor manufacturers, image processing software, and image rendering systems use these standards. With the Astronomik L-RGB filter set, you will obtain excellent material for creating sRGB color images with your camera.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTips and other uses\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIn combination with astronomical line filters, you can extract interesting details from astronomical objects, for example, if you replace or supplement the red filter with H-alpha or the green with OIII.\u003cbr\u003eFor planetary photography and observation, the filters can also be freely used for purposes other than those intended.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observation (countryside): good, as a colored filter for observing planets \u003c\/li\u003e \u003cli\u003eVisual observation (city): good, as a colored filter for observing planets \u003c\/li\u003e \u003cli\u003eConventional film: not suitable \u003c\/li\u003e \u003cli\u003eCCD astrophotography: Excellent, excellent color separation for RGB and L-RGB images. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): not suitable \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astronomically modified): not suitable \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (equipped with clear MC glass): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): good, as a colored filter for photographing planets \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): good, as a colored filter for photographing planets\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003eThe filter can be used with all aperture ratios. \u003c\/li\u003e \u003cli\u003eTransmission is typically 97-99% \u003c\/li\u003e \u003cli\u003eAll filters have \u003cb\u003eIR\/UV blocking\u003c\/b\u003e and are therefore suitable for CCD photography \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eDoes not fear\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and fulfilling observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eMounting material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eSeries: L-RGB Typ 2c\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik L-RGB 2\" Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMounting material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB Typ 2c\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution blocking\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120624533720,"sku":"16757","price":534.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/cffb4eeda2bd8644885bddcc476dea3d.jpg?v=1764068435"},{"product_id":"filtro-deepsky-set-filtri-rgb-1-25","title":"Astronomik Deep-Sky RGB filter set 1.25\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik DeepSky RGB filter set 1.25\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThe \u003cstrong\u003eAstronomik DeepSky RGB filter set 1.25\"\u003c\/strong\u003e is a quality \u003cstrong\u003eAstronomik\u003c\/strong\u003e product, designed to offer reliable performance and excellent results for both enthusiasts and experienced users.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eTransmission: \u0026gt;95\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFilter thread: yes\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik DeepSky RGB filter set 1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e\u0026gt;95\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1.25\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter thread\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDeep-Sky RGB\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution reduction\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120624697560,"sku":"49232","price":262.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/8920babe763a9d59d60ce29b69e35d5c.jpg?v=1764068439"},{"product_id":"filtro-deepsky-set-filtri-rgb-2","title":"Astronomik DeepSky RGB filter set 2\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik Deep-Sky RGB filter set 2\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eWith the \u003cstrong\u003eAstronomik Deep-Sky RGB filter set 2\"\u003c\/strong\u003e, \u003cstrong\u003eAstronomik\u003c\/strong\u003e offers a tool that is meticulously detailed, precise, and built to last.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eTransmission: \u0026gt;95\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eCell material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFilter thread: yes\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik Deep-Sky RGB filter set 2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e\u0026gt;95\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCell material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter thread\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDeep-Sky RGB\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120624763096,"sku":"49233","price":543.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/c3f1de9bfa2dec8b1d1910da779b0673.jpg?v=1764068441"},{"product_id":"filtro-set-filtri-l-rgb-tipo-2c-36-mm-con-montatura","title":"Astronomik L-RGB filter set type 2c 36 mm mounted","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik L-RGB Type 2c filter set 36 mm mounted\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eFilter set suitable for astrophotography with CCD cameras. These filters allow for \u003cb\u003echromatically neutral image rendering\u003c\/b\u003e of planets, stars, and emission\/reflection nebulae.\u003cbr\u003e\u003cbr\u003eThe transmission characteristics of the L-RGB TYPE 2c filters are optimized for CCD astrophotography: with this set, you finally have filters that \u003cb\u003eallow you to photograph all objects in their natural colors\u003c\/b\u003e. Both continuous emission objects and objects emitting only single lines can be rendered in their actual coloration. You get CCD photographs that show the object in optimal colors, exactly as you would see it with the naked eye, if the eye were sufficiently sensitive.\u003cbr\u003e\u003cbr\u003eThis filter set has been designed with particular attention to:\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003esimple color separation processing \u003c\/li\u003e \u003cli\u003emaximum transmission (close to 100%) to achieve the shortest possible exposure times \u003c\/li\u003e \u003cli\u003ehigh transmission in H-beta, OIII, and H-alpha \u003c\/li\u003e \u003cli\u003etransmission of individual filters adapted for optimal color rendering \u003c\/li\u003e \u003cli\u003euse of industry standards\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThanks to the careful processing of the substrate, manufactured individually filter by filter and not on the entire sheet, not only is \u003cb\u003eparfocality\u003c\/b\u003e guaranteed, but distortions are reduced well beyond normal tolerance limits. So as not to be the weak link in a quality optical system, the astronomical filters are obviously diffraction-limited. There are no more problems related to the focal point or the correct image position of individual color separations.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe L-RGB filter set divides the defined spectrum into its red, green, blue, and luminance components. This allows for color separations with B\/W sensors that correspond to the human eye's color vision according to DIN 5032. Thanks to the sRGB color space defined in 1996, it is possible to maintain true colors throughout the production process, from image capture to processing and display. Monitor manufacturers, image processing software, and image rendering systems use these standards. With the Astronomik L-RGB filter set, you will obtain excellent material from your camera for creating sRGB color images.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvice and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIn combination with astronomical line filters, interesting details can be extracted from astronomical objects, for example, if the red filter is replaced or supplemented with H-alpha or the green with OIII.\u003cbr\u003eFor planetary photography and observation, the filters can also be freely used for purposes other than those intended.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): good, as a colored filter for planetary observation \u003c\/li\u003e \u003cli\u003eVisual observations (city): good, as a colored filter for planetary observation \u003c\/li\u003e \u003cli\u003eConventional film: not suitable \u003c\/li\u003e \u003cli\u003eCCD astrophotography: Very good, excellent color separation for RGB and L-RGB images. \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (unmodified): not suitable \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astro-modified): not suitable \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (with clear MC glass): not suitable \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (for planets): good, as a colored filter for planetary photography \u003c\/li\u003e \u003cli\u003eWebcam \/ Video (Deep Sky): good, as a colored filter for planetary photography\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003eThe filter can be used with all aperture ratios. \u003c\/li\u003e \u003cli\u003eTransmission is typically 97-99% \u003c\/li\u003e \u003cli\u003eAll filters have \u003cb\u003eIR\/UV blocking\u003c\/b\u003e and are therefore suitable for CCD photography \u003c\/li\u003e \u003cli\u003e \u003cb\u003eParfocal\u003c\/b\u003e with all other Astronomik filters \u003c\/li\u003e \u003cli\u003eFilter thickness: 1mm \u003c\/li\u003e \u003cli\u003eNot afraid \u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Ring\u003c\/li\u003e\n\n\u003cli\u003eFilter size (mm): 36\u003c\/li\u003e\n\n\u003cli\u003eSeries: L-RGB Type 2c\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik L-RGB Type 2c filter set 36 mm mounted\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emultiple\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eRing\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter size (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e36\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB Type 2c\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eL-RGB Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution blocking\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120627187928,"sku":"52975","price":352.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/9bc636617fa289e10f5d411753fa5d17.jpg?v=1764068470"},{"product_id":"filtro-sii-6nm-ccd-2","title":"Astronomik SII 6nm CCD 2\" Filter","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik SII 6nm CCD Filter 2\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003e\u003cstrong\u003eThis SII-CCD filter is suitable for imaging SII regions from light-polluted observation sites and dark sites alike. The contrast between an object shining at 672 nm and the background is increased enormously!\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThanks to the combination of the narrow 6 nm bandwidth and the high 96% transmission, the filter offers a massive increase in contrast, as all unwanted light from wavelengths other than 672 nm is blocked from UV through IR. This results in an extremely dark background.\u003cbr\u003e The 6 nm FWHM is matched to give you optimal performance with CCD and CMOS sensors with very low dark current! The 6 nm filter is the best choice if you are observing from a heavily light-polluted site or if you are photographing faint objects in crowded Milky Way star regions.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eThanks to the new MFR coating technique, it is possible to use a single filter on all instruments up to f\/4 without a significant reduction in performance.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFilter technical data:\u003c\/strong\u003e\u003c\/p\u003e \u003cul type=\"disc\"\u003e \u003cli\u003e \u003cp\u003eGuaranteed transmission of over 90% at both SII lines (671.7 nm and 673.0 nm)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eTypical transmission of 94% at both SII lines (671.7 nm and 673.0 nm)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eFull Width at Half Maximum (FWHM): 6 nm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePerfect blocking of unwanted light from UV through IR\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eParfocal with all Astronomik filters\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eMFR coating technique: can be used with all optics down to f\/4\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e1 mm thickness\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eNot sensitive to moisture, scratch-resistant, does not age\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOptically polished substrate, streak-free and free of residual stress\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eHigh-quality storage box\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eImaging with narrow-band emission line filters\u003c\/strong\u003e\u003cbr\u003e If you have to observe from light-polluted sites (like most of us...), imaging with narrow-band emission line filters is the best way to take exceptional images, as all types of light pollution can be blocked very effectively! Normally, an H-alpha filter should be your first step into this fantastic field of astrophotography! With a narrow-band H-alpha filter, you will be able to take deep and contrasty images even in conditions of very intense light pollution or with a full moon high in the sky!\u003cbr\u003e If you look at other astrophotos, an H-alpha is the best choice for all nebulae that glow in red! An OIII filter expands your imaging possibilities, as you can visualize all the greenish\/bluish structures. Planetary nebulae and star-forming regions are great targets! The SII filters complete your HSO filter set. With these three filters, you will be able to process your images like those of the Hubble Space Telescope!\u003cbr\u003e The H-beta filter is not available in the 6 nm version, as this filter has almost no significant application. To illustrate this, there are two images shown below: Both were taken with an unmodified Canon 650D. Even though the camera has less than 10% sensitivity in H-alpha, there are signals and structures in the H-alpha image, while nothing is visible in the image taken with an H-beta filter!\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFilter operation:\u003c\/strong\u003e\u003cbr\u003e The filter blocks all unwanted light coming from artificial light pollution, natural light, and moonlight. Especially light from high- and low-pressure sodium and mercury vapor lamps and all natural glow lines are 100% blocked. The filter increases the contrast between the sky background and objects shining on the xx line at xy nm.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTips and suggestions for further applications:\u003c\/strong\u003e\u003cbr\u003e By using the xx filter together with the OIII-CCD and SII-CCD filters, it is possible to produce false-color emission line images (HSO) in the same way as the Hubble Space Telescope. This is also possible from heavily polluted sites!\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eAlternatives:\u003c\/strong\u003e\u003cbr\u003e The cheaper 12 nm filters are the right choice for you if you own a typical DSLR or a CCD camera with high dark current! The 12 nm filters should be the first choice for cameras with an integrated guide sensor, as you will have about twice as many stars compared to the 6 nm filter.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 6\u003c\/li\u003e\n\n\u003cli\u003eOptic coating: MRF\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 672\u003c\/li\u003e\n\n\u003cli\u003eSeries: SII 6nm\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik SII 6nm CCD Filter 2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptic coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMRF\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e672\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII 6nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eline filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution protection\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120628367576,"sku":"63181","price":443.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/107fba9bd8be363e521c9bef347cdbf0.jpg?v=1764068494"},{"product_id":"filtro-h-beta-2","title":"Astronomik H-beta Visual Filter 2\"","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik H-beta Visual Filter 2\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003e\u003cstrong\u003eThe Astronomik H-beta is a filter for visual observation, particularly with large aperture instruments.\u003c\/strong\u003e\u003c\/p\u003e \u003cp style=\"border: none; padding: 0in\"\u003eIt allows the light of the H-beta emission line to pass through almost unimpeded while blocking the rest of the spectral range to the extent that the eye is accustomed to the darkness. By using the Astronomik H-beta filter, contrast is increased so significantly that even observing the Horsehead Nebula with 10\" - 12\" telescopes enters the realm of possibility.\u003c\/p\u003e Main use \u003cp style=\"border: none; padding: 0in\"\u003eThe optimal focal ratio for using the filter is between 1:4.5 and 1:6. The range of application spans from 1:3.5 to 1:15. Transmission losses and chromatic distortions that occur with other filters are only noticeable with Astronomik filters when using extremely fast focal ratios of 1:3 and above. The Astronomik H-beta filter will allow you to view large objects across the entire field of view of the eyepiece, even when using wide-angle eyepieces, not just at the center. This filter should be used on telescopes with a diameter of 8\" (20 cm) or larger. Smaller instruments do not gather enough light for meaningful and satisfying astronomical work. Thanks to the high optical quality of the Astronomik H-beta filter substrate, you will see the same sharp stars you would get from your regular telescope.\u003c\/p\u003e Other uses \u003cul type=\"disc\"\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eThere are few objects in the entire sky that benefit from the use of this filter in visual observation. On the other hand, H-beta filters often decide whether or not an object can be seen. Without a filter, the eye can hardly discover the low contrasts of H-alpha regions.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"border: none; padding: 0in\"\u003eWith the EOS Clip Filter, it even becomes possible to photograph with DSLR cameras in areas extremely affected by light pollution.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e Suitability \u003cul type=\"disc\"\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eVisual observation (dark skies): very good, but suitable only for a few objects\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eVisual observation (urban skies): not suitable\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eFilm photography: depends, very long exposure time\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eCCD photography: good, if used with an additional IR filter\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eDSLR photography (original): very good, but suitable only for a few objects\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eDSLR photography (astro-modified): very good, but suitable only for a few objects\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eDSLR photography (MC-modified): good, if used with an additional IR filter\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eWebcam\/Video (Planets): Not suitable\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"border: none; padding: 0in\"\u003eWebcam\/Video (Deep Sky): not suitable\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e Technical data \u003cul type=\"disc\"\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003etypical transmission better than 95% on the H-beta line\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003ecomplete blocking of all disturbing wavelengths\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eMain operational use: Hydrogen nebulae\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eNo sensitivity to humidity, no aging, and totally scratch-resistant\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eExcellent substrate material: the substrate is optically polished. The optical performance (resolution and contrast) of your telescope is in no way reduced by the filter.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eParfocal with other Astronomik filters\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eGlass thickness: 1 mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eCompletely resistant to high humidity, scratches, and the effects of aging\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"border: none; padding: 0in\"\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and fulfilling observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eOptics coating: multi-coated\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 97\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik H-beta Visual Filter 2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-Beta Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptics coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e97\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter thickness (mm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e1\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-beta\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eEmission nebulae\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSupernova remnants\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120628629720,"sku":"16753","price":180.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/123d048747c08bdd76888b798fc0c84c.jpg?v=1764068501"},{"product_id":"filtro-cls-ccd-sony-alfa-clip","title":"Astronomik CLS CCD Filter Sony Alpha Clip","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik CLS CCD Filter for Sony Alpha Clip\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003e\u003cb\u003eA brief guide to choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which suppresses a large part of light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized to display objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter is necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter allows only light in the H-beta, OIII, H-alpha, and SII lines to pass through. The reduction of background brightness is significantly greater compared to a CLS; however, this filter works only with gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor in-depth astrophotography, we recommend \u003cb\u003enarrowband filters for the OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow for truly deep photos of faint objects, even from locations with intense light pollution and a full moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astro-modified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera so that it can also be used for daytime photography without needing to reprocess all images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Sony Alpha 7\/9\u003c\/li\u003e\n\n\u003cli\u003eSeries: CLS CCD\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: Broadband Filters\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik CLS CCD Filter for Sony Alpha Clip\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCLS CCD\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBroadband Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120628662488,"sku":"53730","price":216.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/f5eefc83eff6f38852ab4ae149fb2289_deff1c5c-6bed-4d9d-9f1d-c7620224cc4f.jpg?v=1764068501"},{"product_id":"filtro-oiii-12nm-ccd-2","title":"Astronomik OIII 12nm CCD Filter 2”","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 12nm CCD 2” Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for both photography and visual observation of OIII regions in environments with artificial light pollution or under dark skies. The \u003cb\u003econtrast between objects\u003c\/b\u003e that shine in OIII light and the sky background \u003cb\u003eis significantly increased\u003c\/b\u003e.\u003cbr\u003e \u003cbr\u003e The OIII filter increases the contrast between certain astronomical objects (especially supernova remnants and planetary nebulae) and the sky background. With a \u003cb\u003enarrow Full Width at Half Maximum (FWHM)\u003c\/b\u003e combined with \u003cb\u003ehigh transmissivity\u003c\/b\u003e in the OIII line range, it achieves a superior increase in contrast compared to filters with wider bandwidths. It can be used with the best results with focal ratios from 1:3 to 1:15 with telescopes from 6\" (150mm) aperture for visual observations at medium magnifications, and with lenses and telescopes of any diameter for CCD, DSLR, and film photography (see alternatives).\u003c\/p\u003e \u003cp\u003e \u003cb\u003eEffectiveness\u003c\/b\u003e\u003cbr\u003e \u003cbr\u003e The filter blocks emission lines from low and high-pressure lamps (mercury (Hg) and sodium (Na)) and airglow lines. Both OIII lines pass through the filter with high transmissivity.\u003c\/p\u003e \u003cp\u003e \u003cb\u003eAdvice for other uses\u003c\/b\u003e\u003cbr\u003e \u003cbr\u003e As an EOS Clip filter, it allows for photography with DSLR cameras even in cities under conditions of high light pollution. In combination with H-alpha and SII CCD filters, you can also take three-color photographs of emission-line objects in heavily light-polluted locations, similar to the process used by the Hubble Space Telescope.\u003c\/p\u003e \u003cp\u003e \u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e \u003cbr\u003e If you are using electronic photography and there is no IR-cut filter present, an OIII CCD filter is necessary.\u003c\/p\u003e \u003cp\u003e \u003cb\u003eFilter characteristics:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eVisual observations (countryside): excellent, achieves high contrast with OIII emission nebulae\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eVisual observations (city): excellent, achieves high contrast with OIII emission nebulae\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eConventional film: partially suitable, long exposure times\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eCCD astrophotography: valid, but an additional IR-cut filter is required\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eDSLR astrophotography (unmodified): excellent, achieves high contrast with OIII emission nebulae\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eDSLR astrophotography (astronomically modified): excellent, achieves high contrast with OIII emission nebulae\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eDSLR astrophotography (with clear MC glass accessory): valid, but an additional IR-cut filter is required\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eWebcam \/ Video (planets): not suitable\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"border: none; padding: 0in\"\u003eWebcam \/ Video (Deep Sky): neutral, if light pollution is a serious problem and OIII emission nebulae are being photographed\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eFilter technical data:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003e93% transmissivity at 501nm (OIII line)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003e\u003cb\u003eFull Width at Half Maximum (FWHM) 12nm\u003c\/b\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003e\u003cb\u003eParfocal\u003c\/b\u003e with all other astronomical filters\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eFilter thickness: 1mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003eMoisture-resistant, non-aging, and scratch-resistant\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"margin-bottom: 0in; border: none; padding: 0in\"\u003e\u003cb\u003ePolished optical material\u003c\/b\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp style=\"border: none; padding: 0in\"\u003eThe filter is shipped in its own case.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e are equipped with an integrated IR-blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCenter wavelength (nm): 501\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coating\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 12nm CCD 2” Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e501\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull width at half maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003emulti-coating\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMount material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e2\"\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution suppression\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eDaytime and twilight observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMoon\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120628891864,"sku":"16818","price":271.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/024078f5f8238ca8b3aa9bfaf6b3ec41.jpg?v=1764068502"},{"product_id":"filtro-oiii-12nm-ccd-clip-sony-alpha-7","title":"Astronomik OIII 12nm CCD Clip Filter for Sony Alpha 7","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik OIII 12nm CCD Clip Filter for Sony Alpha 7\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003e\u003cb\u003eA brief guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which cuts out a large part of light pollution and natural airglow. The result will be skies with a dark background, allowing for longer exposure times, which makes even fainter objects visible. The filter is optimized for viewing objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the standard CLS filter does not have an integrated IR block. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter is required! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very heavy light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter allows only light in the H-beta, OIII, H-alpha, and SII lines to pass through. The reduction in background brightness is significantly greater compared to a CLS; however, this filter only works for gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor advanced astrophotography, we recommend the \u003cb\u003enarrowband filters for OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to capture truly deep images of faint objects even from locations with intense light pollution and a full moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astro-modified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera, allowing it to be used for daytime photography as well, without having to reprocess every image.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Sony Alpha 7\/9\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik OIII 12nm CCD Clip Filter for Sony Alpha 7\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull Width at Half Maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTransmission\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e96\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eParfocal\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eLight pollution filter\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observations\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120629154008,"sku":"53734","price":307.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/55ebb2679bedd081e25c502b2b544605.jpg?v=1764068509"},{"product_id":"filtro-sii-12nm-ccd-maxfr-clip-sony-alpha-7","title":"Astronomik SII 12nm CCD MaxFR Clip Filter for Sony Alpha 7","description":"\u003cdiv class=\"product-description\" style=\"font-family:Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;\"\u003e\n\n\u003ch1 style=\"font-size:24px;font-weight:bold;\"\u003eAstronomik SII 12nm CCD MaxFR Clip Filter for Sony Alpha 7\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eTo learn more about the MaxFR series... \u003c\/p\u003e\n\n\u003cp\u003eUnlike purely visual filters, \u003cb\u003eCCD photographic filters\u003c\/b\u003e feature an integrated IR blocker, which prevents optical problems caused by infrared rays.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eMFR coating\u003c\/b\u003e: thanks to the newly developed MFR technology, the filter can be used with all devices with a focal ratio down to f\/4.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eA brief guide for choosing:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAs a first filter, we recommend the \u003cb\u003eAstronomik CLS\u003c\/b\u003e, which suppresses a large part of light pollution and natural airglow. The result will be skies with a dark background and therefore longer exposure times, which make even the faintest objects visible. The filter is optimized for viewing objects with natural colors. \u003cb\u003eImportant:\u003c\/b\u003e the basic CLS filter does not have an integrated IR blocker. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter is necessary! \u003c\/li\u003e \u003cli\u003eA good choice for activities in locations with very strong light pollution is the \u003cb\u003eAstronomik UHC\u003c\/b\u003e filter. The transmission curve of this filter allows only light in the H-beta, OIII, H-alpha, and SII lines to pass through. The reduction of background brightness is significantly greater than with a CLS; however, this filter only works with gaseous nebulae! Star clusters and galaxies are mostly filtered out. \u003c\/li\u003e \u003cli\u003eFor in-depth astrophotography, we recommend the \u003cb\u003enarrowband filters for OIII, H-alpha, and SII emission lines\u003c\/b\u003e, available with an FWHM of 6 nm or 12 nm. These filters allow you to take truly deep photos of faint objects even from locations with intense light pollution and a full Moon high in the sky. Shots in these narrow wavelengths do not have natural colors. \u003c\/li\u003e \u003cli\u003eFor owners of converted (\"astro-modified\") cameras, we suggest the \u003cb\u003eAstronomik OWB filter\u003c\/b\u003e: the acronym OWB stands for \"Original White Balance.\" The filter converts the spectrum of a modified camera, so you can also use it for daytime photography without having to reprocess all the images.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cp\u003eAstronomik quality for a reliable and satisfying observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eSuitable for...: Sony Alpha 7\/9\u003c\/li\u003e\n\n\u003cli\u003eFrame: Clip Filter\u003c\/li\u003e\n\n\u003cli\u003eMounting material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: MRF\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey technical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:10px;\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAstronomik SII 12nm CCD MaxFR Clip Filter for Sony Alpha 7\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSuitable for...\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSony Alpha 7\/9\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eClip Filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMounting material\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFull width at half maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOptical coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eMRF\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCenter wavelength (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e672\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSII 12nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eManufacturing technique\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003elinear filter\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsable for visual observation\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eno\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUseful for photography\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAnti-light pollution\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eyes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv style=\"background-color:#f0f8ff;padding:15px;margin-top:30px;border-left:4px solid #007acc;\"\u003e\n\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cbr\u003eTake advantage of free shipping throughout Italy for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120629579992,"sku":"67138","price":407.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/9d947480ff7f262ffb2250958a7c8095_57693f6e-e8e4-4bda-8bca-bfe4ed28a461.jpg?v=1764068523"}],"url":"https:\/\/www.giordanoastronomia.it\/en\/collections\/filtri.oembed","provider":"Giordano Astronomia","version":"1.0","type":"link"}