{"product_id":"askar-fra300-pro-rifrattore-apo-60-mm-f-5-petzval-full-frame","title":"Askar FRA300 Pro – 60mm f\/5 Petzval APO Refractor","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 16px; line-height: 1.6; color: #333;\" class=\"product-description\"\u003e\n\n\u003ch1 style=\"font-size: 24px; font-weight: bold;\"\u003eAskar FRA300 Pro – 60mm f\/5 Petzval APO Refractor with flat field for wide-field astrophotography\u003c\/h1\u003e\n\n\u003cp style=\"font-size: 18px; margin-top: 10px;\"\u003eThe \u003cstrong\u003eAskar FRA300 Pro\u003c\/strong\u003e is a Petzval apochromatic refractor designed to offer high performance in wide-field astrophotography, even with full-frame sensors. With a 60mm aperture, 300mm focal length (f\/5), and a quintuplet optical design with an ED lens, it guarantees sharp images, accurate colors, and a flat field. The tube is compact and lightweight, ideal for portable setups, travel, and deep-sky exposures, without sacrificing optical quality and detail.\u003c\/p\u003e\n\n\u003cul style=\"margin-top: 15px; padding-left: 20px;\"\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eQuintuplet (5-element)\u003c\/strong\u003e Petzval optical design with an ED lens to reduce chromatic aberrations\u003c\/li\u003e\n\n\u003cli\u003eFlat field of view compatible with full-frame sensors (image circle of approximately 44 mm)\u003c\/li\u003e\n\n\u003cli\u003ef\/5 focal ratio – perfect for faster exposures on large deep-sky objects\u003c\/li\u003e\n\n\u003cli\u003e2.5\" rack-and-pinion focuser with 1:10 micro-adjustment for better focus control; integrated 360° rotator\u003c\/li\u003e\n\n\u003cli\u003eMultiple rear threads: M42, M48, M54 for accessory compatibility\u003c\/li\u003e\n\n\u003cli\u003eCNC aluminum body, robust tube, 2.26 kg weight for the OTA (3.12 kg with rings, dovetail bar, and accessories)\u003c\/li\u003e\n\n\u003cli\u003eCompact tube length (~303 mm) for increased portability\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 FRA300 Pro\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;\"\u003eQuintuplet Petzval APO Refractor with ED lens\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;\"\u003e60 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;\"\u003e300 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\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eImage circle\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e~44 mm (full-frame)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eRear threads\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eM42×0.75, M48×0.75, M54×0.75\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFocuser\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e2.5\" Rack \u0026amp; Pinion with 1:10 micro-adjustment, integrated 360° rotator\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eOTA weight\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e2.26 kg\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eWeight with accessories\u003c\/td\u003e\n\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e3.12 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;\"\u003e303 mm\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 bar, M42\/M48\/M54 adapters, handle\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 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":51121385832664,"sku":"ASK-FRA300Pro","price":1099.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/AskarFRA300Pro_RifrattoreAPO60mmf5PetzvalFull_Frame2.jpg?v=1764084169","url":"https:\/\/www.giordanoastronomia.it\/en\/products\/askar-fra300-pro-rifrattore-apo-60-mm-f-5-petzval-full-frame","provider":"Giordano Astronomia","version":"1.0","type":"link"}