{"product_id":"usato-askar-fra300-pro-rifrattore-apo-60mm-f5","title":"[Usato] Askar FRA300 Pro – Rifrattore APO 60mm f\/5 Petzval","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 16px; line-height: 1.6; color: #333;\" class=\"product-description\"\u003e\n\u003ch1 style=\"font-size: 24px; font-weight: bold;\"\u003e[Usato] Askar FRA300 Pro – Rifrattore APO 60mm f\/5 Petzval\u003c\/h1\u003e\n\u003cdiv style=\"background-color:#fff4e5;padding:15px;margin-top:10px;border-left:4px solid #f0a020;\"\u003e\n\u003cstrong\u003eEsemplare usato\u003c\/strong\u003e\u003cbr\u003ePezzo unico usato, a 720 €. Il nuovo costa 1.099 €. Le foto sono quelle del prodotto nuovo.\u003c\/div\u003e\n\n\u003cp style=\"font-size: 18px; margin-top: 10px;\"\u003eIl \u003cstrong\u003eAskar FRA300 Pro\u003c\/strong\u003e è un rifrattore apocromatico Petzval progettato per offrire prestazioni elevate in astrofotografia wide-field anche con sensori full-frame. Con apertura da 60 mm, focale di 300 mm (f\/5) e schema ottico a quintupletto con lente ED, garantisce immagini nitide, colori accurati e campo piatto. Il tubo è compatto e leggero, ideale per setup portatili, viaggi ed esposizioni profonde, senza sacrificare qualità ottica e dettaglio.\u003c\/p\u003e\n\u003cul style=\"margin-top: 15px; padding-left: 20px;\"\u003e\n\u003cli\u003eSchema ottico Petzval a \u003cstrong\u003equintupletto (5 elementi)\u003c\/strong\u003e con lente ED per ridurre le aberrazioni cromatiche\u003c\/li\u003e\n\u003cli\u003eCampo visivo piatto compatibile con sensori full-frame (cerchio d’immagine di circa 44 mm)\u003c\/li\u003e\n\u003cli\u003eRapporto focale f\/5 – perfetto per esposizioni più rapide su oggetti deep-sky ampi\u003c\/li\u003e\n\u003cli\u003eFocheggiatore da 2,5\" con demoltiplica 1:10 per miglior controllo del fuoco; rotatore integrato a 360°\u003c\/li\u003e\n\u003cli\u003eFilettature posteriori multiple: M42, M48, M54 per compatibilità con accessori\u003c\/li\u003e\n\u003cli\u003eCorpo in alluminio CNC, tubo robusto, peso di 2,26 kg per l’OTA (3,12 kg con anelli, barra e accessori)\u003c\/li\u003e\n\u003cli\u003eLunghezza tubo compatta (~303 mm) per una maggiore portabilità\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 20px; margin-top: 30px;\"\u003eSpecifiche tecniche\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 10px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eModello\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eAskar FRA300 Pro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eTipo ottico\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eRifrattore APO Petzval quintupletto con lente ED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eApertura\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eLunghezza focale\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e300 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eRapporto focale\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003ef\/5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eCerchio d’immagine\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e~44 mm (full-frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFilettature posteriori\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eM42×0,75, M48×0,75, M54×0,75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eFocheggiatore\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e2,5? Rack \u0026amp; Pinion con demoltiplica 1:10, rotatore 360° integrato\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003ePeso OTA\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e2,26 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003ePeso con accessori\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e3,12 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eLunghezza tubo\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e303 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background-color: #f0f8ff; padding: 15px; margin-top: 30px; border-left: 4px solid #007acc;\"\u003e\n\u003cstrong\u003eSpedizione gratuita in Italia\u003c\/strong\u003e\u003cbr\u003eI prodotti con costo superiore a \u003cstrong\u003e199,99 \u003c\/strong\u003e\u003cstrong\u003e€\u003c\/strong\u003e prevedono la \u003cstrong\u003espedizione gratuita\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52716444745944,"sku":"USA-ASK-FRA300","price":720.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/AskarFRA300Pro_RifrattoreAPO60mmf5PetzvalFull_Frame2_39332e94-184e-4d40-b575-dc9409b0f715.jpg?v=1792437713","url":"https:\/\/www.giordanoastronomia.it\/en\/products\/usato-askar-fra300-pro-rifrattore-apo-60mm-f5","provider":"Giordano Astronomia","version":"1.0","type":"link"}