{"product_id":"usato-gso-newton-200-800-f4-tubo-ottico","title":"[Used] GSO Newtonian 200\/800 f\/4 – Optical Tube for Astrophotography","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;\"\u003e[Used] GSO Newton 200\/800 f\/4 – Optical Tube for Astrophotography\u003c\/h1\u003e\n\n\u003cdiv style=\"background-color:#fff4e5;padding:15px;margin-top:10px;border-left:4px solid #f0a020;\"\u003e\n\n\u003cstrong\u003eUsed item\u003c\/strong\u003e\u003cbr\u003eUnique used piece, at €370 instead of €499 for the new one. The photos are of the new product.\u003c\/div\u003e\n\n\u003cp style=\"font-size:18px;margin-top:10px;\"\u003eThe \u003cstrong\u003eGSO Newton 200\/800\u003c\/strong\u003e is a \u003cstrong\u003e203 mm f\/4\u003c\/strong\u003e optical tube: bright and with a wide field, it is one of the most widely used Newtonians for deep-sky astrophotography, and thanks to its diameter, it is also excellent for visual observation. The 2\" Crayford focuser with 1:10 micro-focuser has enough backfocus for astronomical cameras and DSLRs.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:20px;margin-top:30px;\"\u003eKey features\u003c\/h2\u003e\n\n\u003cul style=\"padding-left:20px;\"\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003e203 mm at f\/4\u003c\/strong\u003e: lots of light and short exposure times.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eParabolic primary mirror\u003c\/strong\u003e with 94% reflectivity aluminum coating.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003e2\" Crayford focuser\u003c\/strong\u003e with 1:10 dual speed, for precise focusing.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eThin vanes\u003c\/strong\u003e for the secondary mirror support.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCompact tube\u003c\/strong\u003e: 73 cm long.\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;\"\u003eGSO\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;\"\u003eNewton 200\/800 f\/4 OTA\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eCondition\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eUsed\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;\"\u003eNewtonian, parabolic primary mirror\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;\"\u003e203 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;\"\u003e800 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\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003ePrimary mirror coating\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eAluminum with 94% reflectivity\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\" Crayford dual speed, 1:10 micro-focuser\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;\"\u003e730 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003eTube diameter\u003c\/td\u003e\n\n\u003ctd style=\"padding:8px;border:1px solid #ccc;\"\u003e230 mm\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;\"\u003e8.7 kg (new, with finder and rings)\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":"GSO","offers":[{"title":"Default Title","offer_id":52625954537688,"sku":"USA-GSO-N200800","price":370.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/0722\/6072\/files\/gso-newton-200800-f4.jpg?v=1791042710","url":"https:\/\/www.giordanoastronomia.it\/en\/products\/usato-gso-newton-200-800-f4-tubo-ottico","provider":"Giordano Astronomia","version":"1.0","type":"link"}