{"product_id":"askar-0-74x-reducer-for-131f","title":"ASKAR 0.74x REDUCER FOR 131F","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar 0.74x Flattener\/Reducer for the 131F\u003c\/strong\u003e is a \u003cstrong\u003etriplet corrector \u003c\/strong\u003ecompatible with\u003cstrong\u003e up to full frame sensors\u003c\/strong\u003e. The \u003cstrong\u003e0.74x reduction factor\u003c\/strong\u003e shortens the focal ratio of the \u003cstrong\u003e131F to f\/5.6\u003c\/strong\u003e, shortening the exposure time and increasing the field of view.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/131F_Reducer_5_1000.jpg?v=1778550949\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhen paired with this flattener\/reducer, the focal length of the \u003cstrong\u003e131F becomes 733.6mm\u003c\/strong\u003e, transforming it into an extremely capable widefield astrograph. The flattener\/reducer has a \u003cstrong\u003ebackfocus requirement of 55mm\u003c\/strong\u003e, making it straightforward to connect common imaging trains. \u003c\/p\u003e\n\u003cp\u003eThe 131F flattener\/reducer has both M48 x 0.75 and M54 x 0.75 camera-side thread adapters. An internal M48 x 0.75 thread allows you to attach \u003cstrong\u003estandard 2\" filters\u003c\/strong\u003e. CNC-machined metal threaded end caps protect the optics of the reducer when not in use.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/131F_Reducer_6_1000.png?v=1778550949\" alt=\"\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/131F_Reducer_7_1000.png?v=1778550949\" alt=\"\"\u003e\u003c\/div\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable style=\"width: 100.061%; height: 137.25px;\" class=\"specificationTable\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.7056px;\"\u003e\n\u003cth style=\"text-align: left; height: 19.7056px;\"\u003eReduction factor\u003c\/th\u003e\n\u003ctd style=\"height: 19.7056px;\"\u003e0.74 x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003cth style=\"text-align: left; height: 18px;\"\u003eTelescope connection\u003c\/th\u003e\n\u003ctd style=\"height: 18px;\"\u003eM78 x 1\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003cth style=\"text-align: left; height: 18px;\"\u003eCamera connection\u003c\/th\u003e\n\u003ctd style=\"height: 18px;\"\u003eM54 x 0.75, M48 x 0.75 (with built-in 2\" filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003cth style=\"text-align: left; height: 18px;\"\u003eImage circle\u003c\/th\u003e\n\u003ctd style=\"height: 18px;\"\u003e44 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003cth style=\"text-align: left; height: 18px;\"\u003eBackfocus distance\u003c\/th\u003e\n\u003ctd style=\"height: 18px;\"\u003e55 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003cth style=\"text-align: left; height: 18px;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"height: 18px;\"\u003e560 g\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003cth style=\"text-align: left; height: 18px;\"\u003eSKU\u003c\/th\u003e\n\u003ctd style=\"height: 18px;\"\u003eASA-131Fx0.74\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/131F_Reducer_8_1000.png?v=1778550949\" alt=\"\"\u003e\u003c\/div\u003e\n\u003ch5\u003eInstructions\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/131F_Reducer_9_1000.png?v=1778550949\" alt=\"\"\u003e\u003c\/div\u003e","brand":"Testar Australia","offers":[{"title":"Default Title","offer_id":48360228684001,"sku":null,"price":539.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/131F_Reducer_3_1000.jpg?v=1778550929","url":"https:\/\/www.testar.com.au\/products\/askar-0-74x-reducer-for-131f","provider":"Testar Australia","version":"1.0","type":"link"}