{"product_id":"0-8x-focal-reducer","title":"0.8x Focal Reducer","description":"\u003cp\u003e\u003cspan\u003eThe Explore Scientific 0.8x Focal Reducer lets astrophotographers explore the wonders of wide-field astrophotography in an easy-to-use package.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 0.8x Focal Reducer works with the following Explore Scientific telescopes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli\u003e\u003ca title=\"Essential Series 80 mm wide-field telescope\" href=\"https:\/\/www.explorescientific.com\/products\/ed80-essential-series-air-spaced-triplet-refractor\"\u003e\u003cspan\u003eES-ED0806-02\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"Essential Series 102 mm telescope\" href=\"https:\/\/www.explorescientific.com\/products\/ed102-essential-series-air-spaced-triplet-refractor-telescope\"\u003e\u003cspan\u003eES-ED10207-02\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"FCD100 80 mm wide-field refractor telescope\" href=\"https:\/\/www.explorescientific.com\/products\/ed80-fcd100-apo-refractor\"\u003e\u003cspan\u003eFCD100-0806-02\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"FCD100 102 mm refractor telescope\" href=\"https:\/\/www.explorescientific.com\/collections\/apo-triplet\/products\/ed102-fcd-100\"\u003e\u003cspan\u003eFCD100-10207-02\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"FCD100 102 mm refractor telescope carbon fiber\" href=\"https:\/\/www.explorescientific.com\/products\/ed102-fcd100-air-spaced-triplet-telescope-carbon-fiber\"\u003e\u003cspan\u003eFCD100-10207-CF-01\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe 2-element 0.8x focal reducer turns the 480-mm-focal-length telescopes into devices with a focal length of 384 mm. This changes the telescopes from an f\/ratio of f\/6 to a much faster f\/4.8. \u003c\/span\u003e\u003cspan\u003eThe device turns the 102 mm telescopes, with a focal length of 714 mm, into telescopes with a focal length of 571 mm: From f\/7 to f\/5.6. \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eCompare this with smaller diameter wide-field telescopes. The Explore Scientific ES and FCD100 80mm telescopes offer significantly more light-gathering aperture. The ES and FCD100 telescopes gather:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli\u003e\u003cspan\u003e1.3 times more light than a 70 mm telescope\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1.8 times more light than a 60 mm telescope\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA whopping 2.6 times more light than a 50 mm telescope\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe faster f\/ratio, coupled with more light-gathering aperture, allows more light to fall onto the camera sensor. For instance, to capture the same amount of light as a 100-second exposure with the Explore Scientific 80 mm takes 256 seconds on a  50 mm, 178 seconds on a 60 mm, and 131 sec on 70 mm – assuming the same f\/ratio. This means that the Explore Scientific 80mm telescope with the 0.8x Focal Reducer can capture far more detail faster than the competition. \u003c\/span\u003e\u003cspan\u003eThe focal reducer, which has 55 mm (+\/- 2 mm) of back spacing, is threaded to accept a standard 42 mm T-ring, making attaching a camera easy. \u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":45451980472380,"sku":"ES-FR0.8x","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/0076\/8316\/files\/ES-FR0.8X_1_7c74a6f1-4013-4ce6-9df0-3c958a8967b3.jpg?v=1780065157","url":"https:\/\/energizetrek.com\/products\/0-8x-focal-reducer","provider":"Energize Trek","version":"1.0","type":"link"}