{"product_id":"askar-sqa85-rifrattore-apocromatico-85mm-f-4-8-quadrupletto-petzval-full-frame","title":"Askar SQA85 – 85mm f\/4.8 Petzval Quadruplet Full-Frame Apochromatic Refractor","description":"\u003cdiv class=\"product-description\" style=\"font-family: Arial, sans-serif; font-size: 16px; line-height: 1.6; color: #333;\"\u003e\n\n\u003ch1 style=\"font-size: 24px; font-weight: bold;\"\u003eAskar SQA85 – 85mm f\/4.8 Petzval Apochromatic Refractor for astrophotography\u003c\/h1\u003e\n\n\u003cp style=\"font-size: 18px; margin-top: 10px;\"\u003eThe \u003cstrong\u003eAskar SQA85\u003c\/strong\u003e is a \u003cstrong\u003ePetzval Quadruplet apochromatic refractor\u003c\/strong\u003e designed to offer maximum performance in \u003cstrong\u003ewide-field astrophotography\u003c\/strong\u003e. With an \u003cstrong\u003e85mm aperture\u003c\/strong\u003e and \u003cstrong\u003e412mm focal length (f\/4.8)\u003c\/strong\u003e, it guarantees bright images free of chromatic aberration and coma. Thanks to its corrected field covering \u003cstrong\u003efull-frame\u003c\/strong\u003e sensors and a 3.5\" dual-speed focuser, the SQA85 is the ideal instrument for astrophotographers seeking a combination of compactness, quality, and precision.\u003c\/p\u003e\n\n\u003cul style=\"margin-top: 15px; padding-left: 20px;\"\u003e\n\n\u003cli\u003ePetzval Quadruplet design with low-dispersion ED glass\u003c\/li\u003e\n\n\u003cli\u003e85mm aperture and 412mm focal length, f\/4.8 focal ratio\u003c\/li\u003e\n\n\u003cli\u003eFlat field corrected for full-frame sensors\u003c\/li\u003e\n\n\u003cli\u003eImages free of chromatic and geometric aberration\u003c\/li\u003e\n\n\u003cli\u003eCompact, lightweight, and portable\u003c\/li\u003e\n\n\u003cli\u003eRobust 3.5\" focuser with 1:10 micro-reduction\u003c\/li\u003e\n\n\u003cli\u003eCNC aluminum construction with retractable dew shield\u003c\/li\u003e\n\n\u003cli\u003eIncludes mounting rings and dovetail plate\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003eTechnical specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 10px;\"\u003e\n\n\u003ctbody\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;\"\u003eAskar SQA85\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eOptical type\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003ePetzval Quadruplet apochromatic refractor\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eOptical design\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e4 elements with ED doublet\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eAperture\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e85 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFocal length\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e412 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFocal ratio\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003ef\/4.8\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eCorrected field\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFull-frame\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFocuser\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e3.5\" with 1:10 dual speed\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eDew shield\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eRetractable\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eIncluded accessories\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eCNC rings, dovetail plate\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eWeight\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e~5.7 kg\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eTube length\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e~480 mm (dew shield retracted)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\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 in Italy\u003c\/strong\u003e\u003cbr\u003eProducts costing over \u003cstrong\u003e€199.99\u003c\/strong\u003e include \u003cstrong\u003efree shipping\u003c\/strong\u003e.\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":51121384489176,"sku":"ASK-SQA85","price":2600.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/askarrifrattoreapocromaticosqa85.png?v=1764084141","url":"https:\/\/www.giordanoastronomia.it\/en\/products\/askar-sqa85-rifrattore-apocromatico-85mm-f-4-8-quadrupletto-petzval-full-frame","provider":"Giordano Astronomia","version":"1.0","type":"link"}