{"product_id":"zwo-70mm-quad-apo-refractor","title":"ZWO 70mm Quad APO Refractor","description":"\u003cp dir=\"ltr\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/FF70_PrincipalKV.jpg?v=1781062466\" alt=\"\" style=\"font-size: 0.875rem;\"\u003e\u003cspan\u003e\u003cimg\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe FF70 APO uses a quadruplet air-spaced APO lens design, including one piece of ED glass. It supports 44mm, \u003cem\u003efull-frame \u003c\/em\u003eimaging. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWith an aperture of 70mm, a focal length of 490mm, and a \u003c\/span\u003e\u003cspan\u003enative focal ratio of f\/7.0, the FF70 APO is versatile and \u003cem\u003ecan be used for both visual \u003c\/em\u003e\u003c\/span\u003e\u003cem\u003eobservation and astrophotography.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg style=\"font-size: 0.875rem;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/70icon_d9222317-9ef9-4ef2-a914-e6a393a97f38.jpg?v=1781063675\" alt=\"\"\u003e\u003cspan\u003eThe telescope's\u003c\/span\u003e\u003cspan\u003e self-flattened design means no more precisely calculating your backfocus—if you're achieving focus, \u003cem\u003eyou'll get sharp stars, period. \u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis also means \u003cem\u003ethere's no need for a separate field flattene\u003c\/em\u003er—your stars will sharp all the way to the \u003c\/span\u003ecorners, straight out of the box.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe FF70 APO OTA weighs only \u003cspan style=\"color: rgb(0, 0, 0);\"\u003e2.5kg and the gross weight, including the tube rings and dovetail plate, is 3kg—about 6.5 pounds. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe FF70 APO also comes standard with a photographic extension tube\u003c\/span\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cspan\u003eincluding M48\u003c\/span\u003e\u003cspan\u003e*\u003c\/span\u003e\u003cspan\u003e0.75 and M54\u003c\/span\u003e\u003cspan\u003e*\u003c\/span\u003e\u003cspan\u003e0.75 adapters\u003c\/span\u003e\u003cspan\u003e, which work well with modern cameras. It also provides\u003c\/span\u003e\u003cspan\u003e a built-in \u003c\/span\u003e\u003cspan\u003e2\u003c\/span\u003e\u003cspan\u003e-inch \u003c\/span\u003e\u003cspan\u003efilter \u003c\/span\u003e\u003cspan\u003ethread, in case you don't have a filter drawer yet\u003c\/span\u003e\u003cspan\u003e. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe handle bar of FF70 APO\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003edoubles guide scope mount, and\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ethere are two additional \u003c\/span\u003e\u003cspan\u003efinder bases on both sides of the focuser, providing additional mounting positions for other astronomical accessories\u003c\/span\u003e\u003cspan\u003e.  (This is a great place to mount an ASI AIR!)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe FF70 APO boasts a rigid, dual-speed R\u0026amp;P \u003c\/span\u003e\u003cspan\u003e2.4\u003c\/span\u003e\u003cspan\u003e-inch\u003c\/span\u003e\u003cspan\u003e focuser, which has a 1:10 fine adjustment and a 360° scale field rotator at the \u003c\/span\u003e\u003cspan\u003erear end for precise angle adjustment. \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe dew shield of the FF70 APO is a retractable design, further shortening the overall length and increasing portability. The entire lens tube of the FF70 APO is crafted using high-quality CNC machining. The inside of the FF70 APO's dew shield is covered with matting paint to effectively reduce stray light reflections. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eMain Features\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/Highlights_0c3af87a-5552-46ed-b337-11b582f95d14.jpg?v=1781063810\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\" align=\"left\"\u003e\u003cb\u003e\u003cspan\u003eFour-Element Optical Design\u003c\/span\u003e\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/Four-ElementOpticalDesign.jpg?v=1780980251\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cb\u003e\u003cspan\u003e44 mm Image Circle — Full-Frame Support\u003c\/span\u003e\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/Full-FrameSupport.jpg?v=1780980251\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 align=\"left\" class=\"MsoNormal\"\u003e\n\u003cb\u003e\u003cspan\u003eConvenient Design\u003c\/span\u003e\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/Focusadjustment.jpg?v=1780980251\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch4 align=\"left\" class=\"MsoNormal\"\u003eStarfield Map\u003c\/h4\u003e\n\u003cp align=\"left\" class=\"MsoNormal\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/Bitmap_image_ba8b72c8-3566-49f4-a8c7-62d5b92c70a8.jpg?v=1781064321\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4 align=\"left\" class=\"MsoNormal\"\u003eSpecifications\u003c\/h4\u003e\n\u003cp align=\"left\" class=\"MsoNormal\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/ff70_Product_parameters.jpg?v=1781064559\" alt=\"\"\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":48334258471171,"sku":"ZWO FF70-APO","price":599.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/FF70APO1_1296x_14e1bb33-cdcb-43bd-93f2-0e6195ddde52.webp?v=1781121589","url":"https:\/\/milehighastro.com\/products\/zwo-70mm-quad-apo-refractor","provider":"Mile High Astronomy","version":"1.0","type":"link"}