{"product_id":"65mm-apo-flatfield-astrograph-with-416mm-focal-len","title":"65mm Apo Flatfield Astrograph With 416mm Focal Length F6.4 Quadruplet Air Spaced Optics Full Frame Ready For Deep Sky Imaging And Visual Astronomy No Flatteners Needed","description":"\u003cdiv\u003e65mm Apo Flatfield Astrograph: 416mm F6.4, No Flatteners\u003cbr\u003e\n✔️ 65PHQ quintuplet with ED glass, full-frame circle, single unit \u003cp\u003eThe 65PHQ is a flatfield astrograph designed for deep-sky imaging and visual astronomy. No flatteners needed thanks to its self-flattening quintuplet design with two ED glass elements, delivering edge-to-edge sharpness on full-frame sensors. The OTA weighs about 2 kg, and the full package with tube rings and accessories comes in at roughly 2.8 kg.\u003c\/p\u003e \u003cp\u003e✅ 65PHQ flatfield astrograph with quintuplet optics including two ED glasses\u003cbr\u003e\n✅ Focal length 416mm and f\/6.4 for wide field imaging\u003cbr\u003e\n✅ Full-frame imaging circle supported, minimal peripheral distortions\u003cbr\u003e\n✅ 2.5” rigid focuser with 360° rotator, finder base\u003cbr\u003e\n✅ Adapters included: M68, M54, M48 with M48 2” filter thread\u003cbr\u003e\n✅ Lightweight OTA about 2 kg; full kit ~2.8 kg with rings and handles\u003cbr\u003e\n✅ Portable with multifunction handle, 300mm dovetail plate, double tube rings\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a flatfield astrograph best used for in astrophotography?\u003c\/p\u003e\n\u003cp\u003eIt's a handy device for capturing sharp, flat-field images across a full-frame sensor. Handy for both imaging and visual work.\u003c\/p\u003e\n- edge-to-edge sharpness across full-frame sensors\n- reduces field curvature and edge aberrations\n- handy for deep-sky imaging and visual use with standard adapters\n- supports camera mounts like M68, M54, M48\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48939060035819,"sku":"VXB0BYJK2X6M","price":1589.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61AHh_swRIL.jpg?v=1782397250","url":"https:\/\/vxb.com\/products\/65mm-apo-flatfield-astrograph-with-416mm-focal-len","provider":"VXB Bearings","version":"1.0","type":"link"}