{"product_id":"askar-fra400c-rifrattore-apo-72mm-f-5-6-quintupletto-ed-astrograph-per-astrofotografia","title":"Askar FRA400C – 72mm f\/5.6 Quintuplet ED APO Refractor Astrograph for astrophotography","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 FRA400C – 72mm f\/5.6 Quintuplet ED Apochromatic Refractor Astrograph\u003c\/h1\u003e\n\n\u003cp style=\"font-size: 18px; margin-top: 10px;\"\u003eThe \u003cstrong\u003eAskar FRA400C\u003c\/strong\u003e is an \u003cstrong\u003eapochromatic refractor astrograph\u003c\/strong\u003e with a \u003cstrong\u003e72 mm aperture\u003c\/strong\u003e and \u003cstrong\u003e400 mm focal length (f\/5.6)\u003c\/strong\u003e, developed for \u003cstrong\u003ewide-field astrophotography\u003c\/strong\u003e. Thanks to its \u003cstrong\u003e5-element Petzval optical design (quintuplet ED)\u003c\/strong\u003e, featuring an \u003cstrong\u003eintegrated field flattener\u003c\/strong\u003e, the FRA400C provides flat and corrected images across full-frame sensors, eliminating chromatic aberration and coma. Compact and lightweight, it represents an excellent solution for those seeking a high-performance, portable telescope for deep-sky imaging.\u003c\/p\u003e\n\n\u003cul style=\"margin-top: 15px; padding-left: 20px;\"\u003e\n\n\u003cli\u003e5-element APO astrograph with integrated flattener\u003c\/li\u003e\n\n\u003cli\u003e72 mm aperture, 400 mm focal length (f\/5.6)\u003c\/li\u003e\n\n\u003cli\u003ePerfectly corrected flat field up to full-frame\u003c\/li\u003e\n\n\u003cli\u003eHigh chromatic and geometric correction\u003c\/li\u003e\n\n\u003cli\u003eCompact and portable for mobile astrophotography\u003c\/li\u003e\n\n\u003cli\u003e2.5\" rack-and-pinion focuser with 1:10 micro-adjustment\u003c\/li\u003e\n\n\u003cli\u003eRetractable dew shield to reduce footprint\u003c\/li\u003e\n\n\u003cli\u003eCNC rings and Vixen-style dovetail bar included\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 FRA400C\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 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;\"\u003e5 elements (quintuplet ED with integrated flattener)\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;\"\u003e72 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;\"\u003e400 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\/5.6\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eCorrected image circle\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;\"\u003e2.5\" 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, Vixen-style dovetail bar\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~3.9 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~430 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 priced over \u003cstrong\u003e€199.99\u003c\/strong\u003e qualify for \u003cstrong\u003efree shipping\u003c\/strong\u003e.\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":51121384456408,"sku":"ASK-FRA400C","price":1200.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/AskarFRA400C_RifrattoreAPO72mmf5.6QuintuplettoEDAstrographperastrofotografia1.png?v=1764084141","url":"https:\/\/www.giordanoastronomia.it\/en\/products\/askar-fra400c-rifrattore-apo-72mm-f-5-6-quintupletto-ed-astrograph-per-astrofotografia","provider":"Giordano Astronomia","version":"1.0","type":"link"}