{"product_id":"askar-1x-full-frame-flattener-for-140apo-telescope","title":"Askar 1x Full Frame Flattener for 140 APO Telescope","description":"\u003cp\u003e\u003cspan\u003ehe Askar 140 APO comes with three optional premium accessories, a 1.0x flattener and a 0.8x reducer. Introduced here is the 1.0x flattener, which is optimized for the Askar 140APO and can provide more possibilities for telescope use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 1.0x flattener does not change the telescope's focal ratio itself. After connecting with the Askar 140APO, it still maintained a focal ratio of 7. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 1.0x flattener adopts a triplet design and supports a 44mm full-frame image circle. The overall weight is 0.75kg. The back focus from the M48 thread is a standard 55mm. The front thread is M92*1. At the camera end, it is equipped with M68*1, M54*0.75 and M48*0.75 three sizes of adapters, which are convenient for connection. At the same time, it has a built-in M48*0.75 2-inch filter thread, which can be directly installed and used. The overall CNC machined, both end threaded metal caps prevent ash when not in use.\u003c\/span\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":48625299685630,"sku":"ASKAR140FL","price":329.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2129\/9429\/files\/Capturesadfs.jpg?v=1784670521","url":"https:\/\/octelescope.com\/products\/askar-1x-full-frame-flattener-for-140apo-telescope","provider":"oc telescope","version":"1.0","type":"link"}