{"product_id":"meade-series-4000-f-6-3-focal-reducer-field-flattener-for-scts-pre-owned","title":"Meade Series 4000 f\/6.3 Focal Reducer \/ Field Flattener for SCTs - (Pre-owned)","description":"\u003cp\u003e\u003cspan style=\"color: rgb(249, 16, 16);\"\u003e\u003cstrong\u003eIn Excellent Condition!\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Meade f\/6.3 Focal Reducer\/Field Flattener (4-element, 41mm diameter, multicoated lens elements) # 07545 threads on to the rear cell of any Meade SCT telescope or to other Schmidt-Cassegrain telescope brands. It reduces the telescopes focal ratio by a factor of 0.63. With this accessory, f\/10 telescopes are converted to f\/6.3 and f\/ 6.3 telescopes are converted to f\/4.\u003c\/p\u003e\n\u003cp\u003eSimultaneously, it helps to flatten the field, significantly improving edge-of-field corrections. The f\/6.3 Meade Focal Reducer enables a reduction of photographic exposure times by about 50%, while producing an actual field diameter of 1.5\" at the film plane. The f\/6.3 Focal Reducer duplicates the rear cell thread of the telescope, allowing you to attach all standard rear cell visual and photographic accessories. Has a standard male SCT thread (2\" outside diameter x 24 TPI) on one side and a standard SCT female thread on the other.\u003c\/p\u003e","brand":"Meade","offers":[{"title":"Default Title","offer_id":44587101421681,"sku":"USED091801","price":179.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/20260918_131907.jpg?v=1789752095","url":"https:\/\/khanscope.com\/fr\/products\/meade-series-4000-f-6-3-focal-reducer-field-flattener-for-scts-pre-owned","provider":"Khan Scope Centre","version":"1.0","type":"link"}