{"title":"Nebular Filters","description":"","products":[{"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-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-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-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-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-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-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-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"},{"product_id":"filtro-sii-12nm-ccd-clip-canon-eos-r-xl","title":"Astronomik SII 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 SII 12nm CCD Clip Filter for Canon EOS R XL\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 issues 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\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 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 blocker. Therefore, for a converted (\"astro-modified\") camera, a CLS-CCD filter is required! \u003c\/li\u003e \u003cli\u003eA great choice for activity in locations with very high 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 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 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 so that it can also be used for daytime photography, without having to re-process 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): 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\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 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;\"\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;\"\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 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 on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120630235352,"sku":"67119","price":307.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/f4109f6efab87d58b846297cdc48c153_89d39dd8-0db8-41ef-9548-d3aef018e036.jpg?v=1764068537"},{"product_id":"filtro-h-beta-sc","title":"Astronomik H-Beta Filter, SC","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, SC\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 in dark environments. 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 such that, for H-beta emission ranges, one witnesses 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 aperture 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 the emission lines of low and high-pressure lamps (mercury (Hg) and sodium (Na)) and the lines of airglow. The H-beta line passes through the filter with high transmissivity.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvice and other modes of use\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIn the whole sky, there are only a few objects that benefit from the filter for visual observations. As an EOS Clip filter, it allows for photography in the city 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 characteristics:\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 (with astronomical modifications): 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 data of the filter:\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 12nm\u003c\/b\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003e\u003c\/b\u003eBlocks 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\u003eResistant to humidity, 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 case.\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\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eFrame: SC thread\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, SC\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;\"\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;\"\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;\"\u003eSC thread\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;\"\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;\"\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\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":51120633577688,"sku":"43791","price":229.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/025a021fe5797abbbfc555ed90bf6bc8.jpg?v=1764068595"},{"product_id":"filtro-oiii-12nm-ccd-sc","title":"Astronomik OIII 12nm CCD Filter SC","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 SC 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 particularly increased\u003c\/b\u003e.\u003cbr\u003e\u003cbr\u003eThe OIII filter enhances 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 OIII line range, a superior increase in contrast is achieved compared to filters with a wider bandwidth. It can be used most effectively 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 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.\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 cities with high light pollution. In combination with H-alpha and SII CCD filters, you can also perform three-color photography of emission-line objects in high light-pollution locations, similar to what is done with the Hubble Space Telescope.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf there is no IR-block filter for electronic photography, an OIII CCD filter is necessary.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFilter features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVisual observations (countryside): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eVisual observations (city): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eConventional film: partially suitable, long exposure times \u003c\/li\u003e \u003cli\u003eCCD astrophotography: valid, but an additional IR-block 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 clear glass MC): valid, but an additional IR-block 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 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 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\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 95\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: MRF\u003c\/li\u003e\n\n\u003cli\u003eFrame: SC thread\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 12\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 SC 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;\"\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;\"\u003e95\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;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSC thread\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;\"\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;\"\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\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":51120633774296,"sku":"43812","price":329.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/1bd321f198f5395620c997092f4879f6.jpg?v=1764068599"},{"product_id":"filtro-sii-12nm-ccd-sc","title":"Astronomik SII 12nm CCD SC 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 12nm CCD SC 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 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\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 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 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 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 in-depth astrophotographic use, 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 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: SC thread\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 12nm CCD SC 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;\"\u003eSC thread\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;\"\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 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":51120633905368,"sku":"67125","price":329.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/9157339632de2a66fed0d00b660654c0.jpg?v=1764068601"},{"product_id":"filtro-h-beta-visuell-t2","title":"Astronomik H-beta Visual Filter T2","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 T2\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eWith the \u003cstrong\u003eAstronomik H-beta Visual Filter T2\u003c\/strong\u003e, \u003cstrong\u003eAstronomik\u003c\/strong\u003e offers an instrument that is refined in detail, precise, and built to last.\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 observing experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eCell: T2 (M42 x 0.75)\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: Multi-coated\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 T2\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;\"\u003eCell\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eT2 (M42 x 0.75)\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;\"\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\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":51120634626264,"sku":"66925","price":199.0,"currency_code":"EUR","in_stock":false}]},{"product_id":"filtro-oiii-12nm-ccd-t2","title":"Astronomik OIII 12nm CCD Filter T2","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 T2 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 shine in OIII light and the sky background is \u003cb\u003esignificantly increased\u003c\/b\u003e.\u003cbr\u003e\u003cbr\u003eThe OIII filter enhances the contrast between specific 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 range of OIII lines, a superior increase in contrast is achieved compared to wider-bandwidth filters. It can be used with best results with 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 emission lines from 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 with high light pollution. When combined with H-alpha and SII CCD filters, you can create three-color photographs of emission-line objects even in locations with high light pollution, similar to what is done with 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, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eVisual observations (city): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eConventional film: partly suitable, long exposure times \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 clear MC 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\u003eTechnical filter data:\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 (FWHM) 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\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 feature 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: T2 (M42 x 0.75)\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: MRF\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 95\u003c\/li\u003e\n\n\u003cli\u003eFrame: T2 (M42 x 0.75)\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 T2 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\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eT2 (M42 x 0.75)\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;\"\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;\"\u003e95\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;\"\u003eT2 (M42 x 0.75)\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;\"\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 12nm\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 resistant\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;\"\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\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":51120634986712,"sku":"43811","price":269.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/1fb92e49cd2c411c6fd1f8b80c5ba198.jpg?v=1764068621"},{"product_id":"filtro-h-alpha-12nm-ccd-t2","title":"Astronomik H-alpha 12nm CCD T2 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 H-alpha 12nm CCD T2 Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003e\u003cb\u003eH-alpha filter\u003c\/b\u003e: this narrowband nebula filter allows red light to pass through at a wavelength of 656 nanometers. This is the line at which HII regions (hydrogen nebulae) shine.\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\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): 656\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 12\u003c\/li\u003e\n\n\u003cli\u003eFrame: T2 (M42 x 0.75)\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 H-alpha 12nm CCD T2 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;\"\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;\"\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;\"\u003eT2 (M42 x 0.75)\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;\"\u003emultiple\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;\"\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 12nm\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;\"\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;\"\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":51120638427352,"sku":"67080","price":243.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/1baf973905f3817385dc3b24125c74de.jpg?v=1764068658"},{"product_id":"filtro-oiii-6nm-ccd-t2","title":"Astronomik OIII 6nm CCD Filter T2","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 T2 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 observation sites with light pollution, as well as from dark sky areas. 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 501nm is blocked from UV to IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled camera\u003c\/b\u003e). 6nm filters are the best choice if you observe 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 from 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 observation sites with light pollution, as well as from dark sky areas. 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 501nm is blocked from UV to IR. This provides an extremely dark background. \u003c\/p\u003e \u003cp\u003eThe 6nm FWHM value is perfect for use with CCD and CMOS sensors with particularly low dark current (\u003cb\u003ecooled camera\u003c\/b\u003e). 6nm filters are the best choice if you observe 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 from 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\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 12nm FWHM are interest\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\u003eTransmission: 96\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFrame: T2 (M42 x 0.75)\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 T2 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;\"\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;\"\u003eFrame\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eT2 (M42 x 0.75)\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;\"\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 on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120639181016,"sku":"46794","price":398.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/2be6ac354c7eacf2af9c965483cd0ea5.jpg?v=1764068676"},{"product_id":"filtro-sii-6nm-ccd-t2","title":"Astronomik SII 6nm CCD T2 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 T2 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\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: narrowband filters with 12 nm FWHM are interesting when combined 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 for capturing 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 cuts out much of the light pollution and natural airglow. The result will be skies with a dark background, thus allowing for 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 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 lets only light in the H-beta, OIII, H-alpha, and SII lines 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 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 for truly deep shots 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;\"\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: T2 (M42 x 0.75)\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\u003eConnection (telescope side): T2 (M42 x 0.75)\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 T2 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;\"\u003eT2 (M42 x 0.75)\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;\"\u003eConnection (telescope side)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eT2 (M42 x 0.75)\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 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 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 on orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":51120639738072,"sku":"63188","price":398.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/cfbb0bf660c83fc001186239296d558e_cb2dc6c6-229c-4d98-a3f9-7de9f631a940.jpg?v=1764068687"},{"product_id":"filtro-oiii-filter-sc-fassung","title":"Astronomik OIII Filter SC-Mount","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 SC-Thread\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThis filter is suitable for both photography and the observation of OIII regions in areas 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 enhanced\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 a wider bandwidth. It can be used most effectively 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 emission lines from 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\u003eUsage Tips\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 create three-color photographs of emission-line objects even in locations with heavy light pollution, similar to images from the Hubble Space Telescope.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAlternatives\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIf your electronic imaging device lacks an IR-cut filter, a CCD OIII 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, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eVisual observations (city): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eConventional film: partially suitable, 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): excellent, achieves high contrast with OIII emission nebulae \u003c\/li\u003e \u003cli\u003eDSLR astrophotography (astro-modified): excellent, achieves high contrast 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 issue and OIII emission nebulae are being photographed\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eTechnical Filter Data:\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 (FWHM) 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, durable, 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 observing experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003eType: Filter\u003c\/li\u003e\n\n\u003cli\u003eFWHM: 12nm\u003c\/li\u003e\n\n\u003cli\u003eMount: SC thread\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eSeries: OIII\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: linear 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 OIII Filter SC-Thread\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;\"\u003eFWHM\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e12nm\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;\"\u003eSC thread\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;\"\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;\"\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;\"\u003eLight pollution resistant\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 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":51120640098520,"sku":"43774","price":207.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/31ff1cdd6a35a2ecd6cc01dc6b1b269f.jpg?v=1764068695"},{"product_id":"celestron-filtro-ossigeno-iii-da-31-8mm","title":"Celestron 1.25\" Oxygen III 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;\"\u003eCelestron 1.25\" Oxygen III Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eCelestron OIII narrowband filters isolate only the two lines of doubly ionized oxygen (at 496 and 501nm wavelengths) emitted by planetary and emission nebulae, blocking all other wavelengths of the light spectrum. Using this filter often makes the difference between seeing and not seeing certain nebulae. The effect is particularly impressive with some well-known nebulae, for example, the Veil (in Cygnus) and the Helix in Aquarius. Without a filter, using small instruments, you often see nothing. With the filter, the nebula will be immediately visible! Each filter features a high-surface-hardness optical coating, deposited using high-vacuum thin-film deposition techniques. The coating uses the principle of optical interference and is designed to block the entire visual spectrum from 400 to 700 nm. This eliminates the unnatural colored halos around bright stars that are typical of O III filters built with less sophisticated high-vacuum deposition technologies. The filter diameter is 1.25\". Celestron filters are designed to be screwed onto eyepieces of the corresponding diameter. In fact, all modern eyepieces are equipped with filter threads. Furthermore, Celestron filters are also threaded on the opposite side, with a female thread that allows you to screw multiple filters together if necessary.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eCelestron quality for a reliable and rewarding observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\u003cli\u003eFilter diameter: 1.25\"\u003c\/li\u003e\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;\"\u003eCelestron\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;\"\u003eCelestron 1.25\" Oxygen III 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;\"\u003eNebula Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter diameter\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\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":"Celestron","offers":[{"title":"Default Title","offer_id":51120709337304,"sku":"CE93623","price":148.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/39716208214232-pulita.jpg?v=1791320611"},{"product_id":"celestron-filtro-uhc-lpr-da-50-8mm","title":"Celestron 2\" UHC\/LPR 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;\"\u003eCelestron 2\" UHC \/ LPR Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eCelestron UHC\/LPR (Ultra High Contrast \/ Light Pollution Reduction) filters are designed to selectively reduce the transmission of specific wavelengths of light, specifically those produced by artificial light. This includes light generated by mercury vapor lamps and both low and high-pressure sodium lamps, as well as unwanted light caused by the natural emission of neutral oxygen in our atmosphere. The new high-contrast LPR (UHC) filter features improved contrast compared to typical broadband filters. The sky background is darker, and the contrast of emission nebulae is noticeably improved. Advanced high-vacuum oxide deposition technology allows the filter to achieve extraordinary transmission of over 97% across the entire passband, while completely blocking light pollution lines. It is the perfect filter for observing nebulae under light-polluted skies, or for enhancing nebula contrast under dark skies. In addition to its excellent spectral and optical characteristics, the UHC\/LPR filter offers important performance features that set it apart and enable better observations. The dielectric multi-layer coating uses plasma technology and is hardened with ion beams using state-of-the-art technology to ensure durability and high resistance to surface scratches. More efficient light transmission results in greater image brightness and contrast. Users of small telescopes, from 100 to 280 mm, will appreciate the filter's high efficiency, and those with larger telescopes will be pleased by the richness of the star fields and the nuances of the nebulae that the filter leaves intact. The high transmission, clean light pollution cutoff, and smoother 60nm passband of the UHC\/LPR filter allow for a more natural view, with a clear increase in overall contrast. Astroimagers will also appreciate the wider passband and the inclusion of the H-Alpha radiation passband (656nm).\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eCelestron quality for a reliable and rewarding observing experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\u003cli\u003eFilter diameter: 2\"\u003c\/li\u003e\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;\"\u003eCelestron\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;\"\u003eCelestron 2\" UHC \/ LPR 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;\"\u003eNebula Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter diameter\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\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":"Celestron","offers":[{"title":"Default Title","offer_id":51120709402840,"sku":"CE94124","price":188.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/39716208247000-pulita.jpg?v=1791320620"},{"product_id":"celestron-filtro-ossigeno-iii-da-50-8mm","title":"Celestron 2-inch Oxygen III 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;\"\u003eCelestron 2\" Oxygen III Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eCelestron narrowband OIII filters isolate only the two doubly ionized oxygen lines (at 496 and 501nm wavelengths) emitted by planetary and emission nebulae, blocking all other wavelengths of the light spectrum. Using this filter often makes the difference between seeing and not seeing certain nebulae. The effect is particularly impressive with some well-known nebulae, such as the Veil (in Cygnus) and the Helix (in Aquarius). Without a filter, using small instruments, you often see nothing. With the filter, the nebula will be immediately apparent! Each filter features a high-hardness optical coating, applied using high-vacuum thin-film deposition techniques. The coating uses the principle of optical interference and is designed to block the entire visual spectrum from 400 to 700 nm. This eliminates the unnatural colored halos around bright stars that are typical of OIII filters built with less sophisticated high-vacuum deposition technologies. The filter diameter is 2 inches (50.8 mm). Celestron filters are designed to be screwed into eyepieces of the corresponding diameter. In fact, all modern eyepieces are equipped with filter threads. Celestron filters are also threaded on the opposite side with a female thread that allows you to screw multiple filters together if necessary. \u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eCelestron quality for a reliable and fulfilling observation experience.\u003c\/p\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\u003cli\u003eFilter diameter: 2\"\u003c\/li\u003e\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;\"\u003eCelestron\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;\"\u003eCelestron 2\" Oxygen III 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;\"\u003eNebula Filters\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eFilter diameter\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\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":"Celestron","offers":[{"title":"Default Title","offer_id":51120709435608,"sku":"CE93624","price":211.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/39716208279768-pulita.jpg?v=1791320629"},{"product_id":"optolong-filtro-filter-l-enhance-1-25","title":"Optolong L-eNhance 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;\"\u003eOptolong L-eNhance Filter 1.25\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThe dual bandpass L-eNhance filter allows you to photograph nebulae with color cameras while significantly reducing light pollution. The H-alpha, H-beta, and O-III spectral lines pass through almost unimpeded. Light pollution areas are blocked, making deep-sky photography possible even from the city! The evocative colors of the nebulae are preserved as much as possible to create a natural impression. The filter allows you to capture images with quality close to that of monochrome cameras with narrowband filters!\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eOptolong 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\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eFilter thickness (mm): 2\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multiple\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;\"\u003eOptolong\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;\"\u003eOptolong L-eNhance 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;\"\u003eTri-band narrowband filter (Hα, Hβ, OIII)\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;\"\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 thickness (mm)\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;\"\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;\"\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;\"\u003eNebulae and Galaxies\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\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":"Optolong","offers":[{"title":"Default Title","offer_id":51120763502808,"sku":"65041","price":156.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/5374afec912904334860d42a37126d70.jpg?v=1764071111"},{"product_id":"optolong-filtro-l-extreme-1-25","title":"Optolong L-eXtreme 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;\"\u003eOptolong L-eXtreme 1.25\" Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThe Optolong L-eXtreme is a 7nm dual-bandpass filter that can be used with one-shot color cameras, such as DSLRs (Digital Single-Lens Reflex cameras) and monochrome CCD cameras. It is also suitable for \"fast\" optical systems. The nature of this filter makes it possible to photograph emission nebulae even in skies with heavy light pollution. Optolong believes that the design of the L-eXtreme filter would be a better, competitively priced choice for fast systems.\u003c\/p\u003e \u003cp\u003eThe Optolong L-eXtreme filter isolates the H-Alpha and OIII nebula emission lines, maximizing contrast and the signal-to-noise ratio between nebulae. For people living in areas with significant light pollution or those who want to take photos when the moon is out, the L-eXtreme is an excellent filter. Unlike the L-eNhance filter, which is a tri-band filter (transmitting Hb, Ha, and OIII), the L-eXtreme filter is a dual-band filter that allows the H-Alpha and OIII emission lines to pass through.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey Features\u003c\/h2\u003e\n\n\u003cp\u003eOptolong 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: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 99\u003c\/li\u003e\n\n\u003cli\u003eConnection (eyepiece side): 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;\"\u003eOptolong\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;\"\u003eOptolong L-eXtreme 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;\"\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\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 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;\"\u003e99\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (eyepiece 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;\"\u003eSurface accuracy\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e4\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;\"\u003eDual-band narrowband filter (Hα+OIII 7 nm)\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\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eNebulae and Galaxies\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;\"\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\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":"Optolong","offers":[{"title":"Default Title","offer_id":51120763961560,"sku":"67553","price":205.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/2ebaaf27fe0adee7ae75713aee855844.jpg?v=1764071113"},{"product_id":"optolong-filtro-sho-filter-kit-1-25","title":"Optolong SHO Filter Kit 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;\"\u003eOptolong SHO Filter Kit 1.25\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eNarrowband filters increase contrast by letting only a certain range of light wavelengths pass through that correspond to specific spectral lines, for example, hydrogen (H-a, 656nm), oxygen (OIII, 501nm), sulfur (SII, 672nm), etc. The filters can always be used for photography, even when the Moon is visible, or as a light pollution filter in the city. Exposure time duration is not important: you can even take long-exposure photographs. OIII Filter: the narrowband nebula filter lets light pass at 500 nanometers. This is the line of doubly ionized oxygen. Planetary nebulae and supernova remnants shine in this color. H-alpha filter: this narrowband nebula filter lets red light with a wavelength of 656 nanometers pass. It is the line where HII zones (hydrogen nebulae) shine. SII Filter: the narrowband filter lets light from ionized sulfur atoms pass at 672 nanometers. It is the line where many planetary nebulae, emission nebulae, and supernova remnants shine.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eOptolong 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\u003eSize: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eOptics coating: multi-coated (plane-parallel)\u003c\/li\u003e\n\n\u003cli\u003eConnection: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 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;\"\u003eOptolong\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;\"\u003eOptolong SHO Filter Kit 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;\"\u003eCombinations and sets\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;\"\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;\"\u003emulti-coated (plane-parallel)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection\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;\"\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;\"\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;\"\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 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;\"\u003eH-alpha\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;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eNebulae and Galaxies\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 for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":51120764092632,"sku":"67528","price":433.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/ce6718a61734433f70e430cd5318442a.jpg?v=1764071119"},{"product_id":"filtro-duo-band-1-25","title":"ZWO Duo-Band 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\n\u003ch1 style=\"font-size: 24px; font-weight: bold;\"\u003e\n\nZWO Duo-Band 1.25\" Filter\n\n\u003c\/h1\u003e\n\n\n\u003cp style=\"font-size: 18px; margin-top: 10px;\"\u003e\nThe \u003cstrong\u003eZWO Duo-Band 1.25\" Filter\u003c\/strong\u003e is a \u003cstrong\u003edual narrowband filter\u003c\/strong\u003e designed primarily for color cameras, useful for improving the contrast and visibility of emission nebulae without switching to a full monochrome setup.\n\u003c\/p\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003eBandpass management\u003c\/h2\u003e\n\n\u003cp\u003e\nDesigned to enhance the useful signal or protect the optical train depending on the type of filter.\n\u003c\/p\u003e\n\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eBetter contrast\u003c\/li\u003e\n\n\u003cli\u003eDedicated use\u003c\/li\u003e\n\n\u003cli\u003eUseful accessory\u003c\/li\u003e\n\n\u003cli\u003eMore effective setup\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003ePractical compatibility\u003c\/h2\u003e\n\n\u003cp\u003e\nSuitable for setups and accessories of the format indicated in the title.\n\u003c\/p\u003e\n\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eSimple assembly\u003c\/li\u003e\n\n\u003cli\u003eGood integration\u003c\/li\u003e\n\n\u003cli\u003ePracticality\u003c\/li\u003e\n\n\u003cli\u003eTargeted use\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003eApplications\u003c\/h2\u003e\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eAstrophotography\u003c\/li\u003e\n\n\u003cli\u003ePlanetary\u003c\/li\u003e\n\n\u003cli\u003eDeep-sky\u003c\/li\u003e\n\n\u003cli\u003eOptical protection\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\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\n\n\u003ctbody\u003e\n\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;\"\u003eDuo-band filter\u003c\/td\u003e\n\n\n\u003c\/tr\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;\"\u003eZWO\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFormat\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e1.25 inches\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eUse\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003ecolor cameras \/ OSC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eCompatibility\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eASI cameras and EFW\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003ePackage contents\u003c\/h2\u003e\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eZWO Duo-Band 1.25\" Filter\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\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\u003e\nTake advantage of free shipping throughout Italy for orders over €199.99!\n\n\u003c\/div\u003e\n\n\n\n\u003c\/div\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":51120824287448,"sku":"63984","price":129.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/189a1c22ed4730c21f176440e669b22c.jpg?v=1764072309"},{"product_id":"optolong-filtro-sii-filter-2","title":"Optolong SII 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\n\u003ch1 style=\"font-size: 24px; font-weight: bold;\"\u003e\n\nOptolong SII Filter 2\"\n\n\u003c\/h1\u003e\n\n\n\u003cp style=\"font-size: 18px; margin-top: 10px;\"\u003e\nThe \u003cstrong\u003eOptolong SII Filter 2\"\u003c\/strong\u003e is a \u003cstrong\u003enarrowband filter for astrophotography\u003c\/strong\u003e designed to isolate the S-II line at 672 nm and enhance emission nebulae, planetary nebulae, and supernova remnants.\n\u003c\/p\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003eBandpass management\u003c\/h2\u003e\n\n\u003cp\u003e\nDesigned to enhance the useful signal or protect the optical train depending on the type of filter.\n\u003c\/p\u003e\n\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eBetter contrast\u003c\/li\u003e\n\n\u003cli\u003eDedicated use\u003c\/li\u003e\n\n\u003cli\u003eUseful accessory\u003c\/li\u003e\n\n\u003cli\u003eMore effective setup\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003ePractical compatibility\u003c\/h2\u003e\n\n\u003cp\u003e\nSuitable for setups and accessories of the format indicated in the title.\n\u003c\/p\u003e\n\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eSimple mounting\u003c\/li\u003e\n\n\u003cli\u003eGood integration\u003c\/li\u003e\n\n\u003cli\u003ePracticality\u003c\/li\u003e\n\n\u003cli\u003eTargeted use\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003eApplications\u003c\/h2\u003e\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eAstrofotography\u003c\/li\u003e\n\n\u003cli\u003ePlanetary\u003c\/li\u003e\n\n\u003cli\u003eDeep-sky\u003c\/li\u003e\n\n\u003cli\u003eOptical protection\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\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\n\n\u003ctbody\u003e\n\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;\"\u003eSII narrowband filter\u003c\/td\u003e\n\n\n\u003c\/tr\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;\"\u003eOptolong\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFormat\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e2 inches\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eWavelength\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e672 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eBandpass\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e3 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003ePackage contents\u003c\/h2\u003e\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eOptolong SII Filter 2\"\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\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\u003e\nTake advantage of free shipping throughout Italy for orders over €199.99!\n\n\u003c\/div\u003e\n\n\n\n\u003c\/div\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":51120825467096,"sku":"67555","price":202.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/7c37ebafec609bed5a0ae1bc4e796865.jpg?v=1764072341"},{"product_id":"optolong-filtro-sii-filter-1-25","title":"Optolong SII 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\n\u003ch1 style=\"font-size: 24px; font-weight: bold;\"\u003e\n\nOptolong SII Filter 1.25\"\n\n\u003c\/h1\u003e\n\n\n\u003cp style=\"font-size: 18px; margin-top: 10px;\"\u003e\nThe \u003cstrong\u003eOptolong SII Filter 1.25\"\u003c\/strong\u003e is an \u003cstrong\u003eastronomical filter\u003c\/strong\u003e designed to improve contrast, manage bandwidth, or provide optical protection, depending on the type indicated in the title.\n\u003c\/p\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003eBandwidth management\u003c\/h2\u003e\n\n\u003cp\u003e\nDesigned to enhance the useful signal or protect the optical train depending on the type of filter.\n\u003c\/p\u003e\n\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eBetter contrast\u003c\/li\u003e\n\n\u003cli\u003eDedicated use\u003c\/li\u003e\n\n\u003cli\u003eUseful accessory\u003c\/li\u003e\n\n\u003cli\u003eMore effective setup\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003ePractical compatibility\u003c\/h2\u003e\n\n\u003cp\u003e\nSuitable for setups and accessories in the format indicated in the title.\n\u003c\/p\u003e\n\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eSimple assembly\u003c\/li\u003e\n\n\u003cli\u003eGood integration\u003c\/li\u003e\n\n\u003cli\u003ePracticality\u003c\/li\u003e\n\n\u003cli\u003eTargeted use\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003eApplications\u003c\/h2\u003e\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eAstrophotography\u003c\/li\u003e\n\n\u003cli\u003ePlanetary\u003c\/li\u003e\n\n\u003cli\u003eDeep-sky\u003c\/li\u003e\n\n\u003cli\u003eOptical protection\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\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\n\n\u003ctbody\u003e\n\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;\"\u003eAstronomical filters\u003c\/td\u003e\n\n\n\u003c\/tr\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;\"\u003eOptolong\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFormat\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e1.25 inches\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003ePackage contents\u003c\/h2\u003e\n\n\u003cul style=\"padding-left: 20px;\"\u003e\n\n\u003cli\u003eOptolong SII Filter 1.25\"\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\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\u003e\nTake advantage of free shipping throughout Italy for orders over €199.99!\n\n\u003c\/div\u003e\n\n\n\n\u003c\/div\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":51120826286296,"sku":"67556","price":81.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/7c37ebafec609bed5a0ae1bc4e796865_add50136-6377-4484-acee-406d2e0f36da.jpg?v=1764072363"},{"product_id":"optolong-filtro-h-alpha-3nm-2","title":"Optolong H-alpha 3nm 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;\"\u003eOptolong H-alpha 3nm 2\" Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eWith the \u003cstrong\u003eOptolong H-alpha 3nm 2\" Filter\u003c\/strong\u003e, \u003cstrong\u003eOptolong\u003c\/strong\u003e offers a tool with attention to detail, precision, and built to last.\u003c\/p\u003e\n\n\u003cp style=\"margin-top:10px;\"\u003eH-alpha filter: this narrowband nebula filter allows red light with a wavelength of 656 nanometers to pass through. This is the line where HII regions (hydrogen nebulae) shine.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eOptolong 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 (eyepiece side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): 656\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 3\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;\"\u003eOptolong\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;\"\u003eOptolong H-alpha 3nm 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;\"\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 (eyepiece 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;\"\u003eBandwidth (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;\"\u003e3\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;\"\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;\"\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 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\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-alpha\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;\"\u003e-\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;\"\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;\"\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\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":"Optolong","offers":[{"title":"Default Title","offer_id":51120863412440,"sku":"73721","price":342.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/c8d4c56093945f1336fb97ea9dc88f19.jpg?v=1764073037"},{"product_id":"optolong-filtro-sho-filter-kit-3nm-2","title":"Optolong SHO 3nm 2\" Filter Kit","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;\"\u003eOptolong SHO 3nm 2\" Filter Kit\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThe \u003cstrong\u003eOptolong SHO 3nm 2\" Filter Kit\u003c\/strong\u003e is a quality \u003cstrong\u003eOptolong\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\u003eOptolong 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: 2\"\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eMount material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eOptical coating: multi-coated (plane-parallel)\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;\"\u003eOptolong\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;\"\u003eOptolong SHO 3nm 2\" Filter Kit\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;\"\u003eCombinations and sets\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection\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;\"\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 (plane-parallel)\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;\"\u003eFull width at half maximum (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e3\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eQuantity\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e3\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;\"\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;\"\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\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;\"\u003e-\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eH-alpha\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":"Optolong","offers":[{"title":"Default Title","offer_id":51120872325336,"sku":"73684","price":1061.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/8ec90c4cc7d35bbdeccfdab5a49341eb.jpg?v=1764073245"},{"product_id":"optolong-filtro-l-ultimate-1-25","title":"Optolong L-Ultimate 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;\"\u003eOptolong L-Ultimate Filter 1.25\"\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eIn short: Exceptional optical quality and properties. 3 nm dual-band filter for nebula astrophotography. Transmission of H-alpha and OIII lines. Additional protection against light pollution. The Optolong L-Ultimate dual-band filter features a full width at half maximum (FWHM) of only 3 nm and is an excellent filter against light pollution for the reddish H-alpha and blue-green OIII wavelengths in astrophotography. Furthermore, it highlights weaker nebulae and brings out fine details. It has the same quality and coating as other Optolong filters and can also be used for fast focal ratios, down to approximately f\/4. It does not matter whether you use DSLR, CMOS (mono or color), or CCD cameras.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eOptolong 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 (eyepiece side): 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eFrame: 1.25\"\u003c\/li\u003e\n\n\u003cli\u003eBandwidth (nm): OIII (500.7), H-alpha (656.3)\u003c\/li\u003e\n\n\u003cli\u003eFull width at half maximum (nm): 3\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: line 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;\"\u003eOptolong\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;\"\u003eOptolong L-Ultimate 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;\"\u003eDual-band narrowband filter (Hα+OIII 3 nm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (eyepiece 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;\"\u003eBandwidth (nm)\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eOIII (500.7), H-alpha (656.3)\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;\"\u003e3\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 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;\"\u003eH-alpha\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;\"\u003e-\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;\"\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;\"\u003eNebulae and Galaxies\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":"Optolong","offers":[{"title":"Default Title","offer_id":51120908501208,"sku":"79624","price":224.99,"currency_code":"EUR","in_stock":true}]},{"product_id":"optolong-filtro-l-extreme-f2-2","title":"Optolong L-eXtreme Filter F2 (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;\"\u003eOptolong L-eXtreme F2 Filter (2\")\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThe Optolong L-eXtreme is a 7nm dual-bandpass filter that can be used with one-shot color cameras, such as DSLRs (digital single-lens reflex cameras) and monochrome CCD cameras. It is also suitable for \"fast\" optical systems.\u003c\/p\u003e \u003cp\u003eThe nature of this filter makes it possible to photograph emission nebulae even in skies with heavy light pollution. Optolong believes the design of the L-eXtreme filter is a better choice for fast systems at a competitive price. The Optolong L-eXtreme filter isolates the H-Alpha and OIII emission lines of nebulae, maximizing the contrast and signal-to-noise ratio between nebulae. For people living in heavily light-polluted areas or who want to take photos when the moon is out, the L-eXtreme is an excellent filter.\u003c\/p\u003e \u003cp\u003eUnlike the L-eNhance filter, which is a tri-band filter (transmitting Hb, Ha, and OIII), the L-eXtreme filter is a dual-band filter that allows the passage of the H-Alpha and OIII emission lines.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eOptolong 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\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eFrame material: Aluminum\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 99\u003c\/li\u003e\n\n\u003cli\u003eSurface accuracy: 4\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;\"\u003eOptolong\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;\"\u003eOptolong L-eXtreme F2 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;\"\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;\"\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 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;\"\u003e99\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eSurface accuracy\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e4\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (eyepiece 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;\"\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;\"\u003eDiameter (″)\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;\"\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\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eNebulae and Galaxies\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 for orders over €199.99!\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":51120908599512,"sku":"80191","price":288.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/dd094e6a5d918e9859473d819b26375f.jpg?v=1764074153"},{"product_id":"optolong-filtro-sii-3nm-2","title":"Optolong 2\" SII 3nm 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;\"\u003eOptolong SII 3nm 2\" Filter\u003c\/h1\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eSII filter: this narrowband filter allows light from ionized sulfur atoms to pass through at 672 nanometers. This is the line where many planetary nebulae, emission nebulae, and supernova remnants shine.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eOptolong 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\u003eBandpass (nm): 672\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 3\u003c\/li\u003e\n\n\u003cli\u003eConnection (eyepiece side): 2\"\u003c\/li\u003e\n\n\u003cli\u003eFrame: 2\"\u003c\/li\u003e\n\n\u003cli\u003eManufacturing technique: linear 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;\"\u003eOptolong\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;\"\u003eOptolong SII 3nm 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;\"\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;\"\u003eBandpass (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;\"\u003e3\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eConnection (eyepiece 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;\"\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 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;\"\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;\"\u003eUsable for visual observations\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;\"\u003eNebulae and Galaxies\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":"Optolong","offers":[{"title":"Default Title","offer_id":51120908665048,"sku":"73723","price":815.99,"currency_code":"EUR","in_stock":true}]},{"product_id":"baader-filtro-oiii-super-g-2","title":"Baader 2\" OIII Super-G 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;\"\u003eBaader 2\" OIII Super-G Filter\u003c\/h1\u003e\n\n\u003cul\u003e \u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003eO-III Super-G filter with 9 nm FWHM and 97% peak transmission.\u003c\/li\u003e \u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003eFor visual and photographic observation of planetary nebulae and supernova remnants, even with small telescopes.\u003c\/li\u003e \u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003eCan be used as a replacement for the \"Super-G filter\" in RGB imaging. While standard G filters suffer from poor visibility due to air turbulence, the narrow 9 nm range lets in less thermal noise, resulting in sharper images. However, the transmission window is wide enough that it cannot be considered a pure narrowband filter.\u003c\/li\u003e \u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003eCMOS-optimized coating technology with much steeper filter bandpass slopes - for higher contrast, increased durability, and to prevent reflections.\u003c\/li\u003e \u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eMain features\u003c\/h2\u003e\n\n\u003cp\u003eBaader 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): 500.7\u003c\/li\u003e\n\n\u003cli\u003eFull Width at Half Maximum (nm): 9\u003c\/li\u003e\n\n\u003cli\u003eTransmission: 97\u003c\/li\u003e\n\n\u003cli\u003eConnection (telescope side): 2\"\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;\"\u003eBaader\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;\"\u003eBaader 2\" OIII Super-G 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;\"\u003e500.7\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;\"\u003e9\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;\"\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;\"\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;\"\u003eOptics coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003edielectric\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;\"\u003eFilter thickness (mm)\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;\"\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;\"\u003eHeight (mm)\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;\"\u003eSuper-G\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;\"\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":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":51121285365976,"sku":"78362","price":146.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/aa73d924937e012b5a3226956f926333.jpg?v=1764082169"}],"url":"https:\/\/www.giordanoastronomia.it\/en\/collections\/filtri-nebulari.oembed","provider":"Giordano Astronomia","version":"1.0","type":"link"}