{"id":15292,"date":"2025-07-05T14:59:46","date_gmt":"2025-07-05T12:59:46","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=15292"},"modified":"2026-10-13T11:07:11","modified_gmt":"2026-10-13T09:07:11","slug":"zwo-ff65-apo-65-416-quintuplet-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/zwo-ff65-apo-65-416-quintuplet-ota\/","title":{"rendered":"ZWO FF65 APO 65\/416 Quintuplet OTA"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>Flat field of view without a flattener: the compact travel astrograph<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>ZWO FF65 APO<\/strong> is a five-lens quintuplet astrograph with ED glass that provides a completely flat field of view for full-frame sensors and beyond, with no separate flattener and no back-focus calculations. With a 65mm aperture, 416mm focal length (f\/6.4), and a low weight, this is the entry point into serious deep-sky photography that works right out of the box.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Why a flatfield design?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">With classic refractors, the distance between the flattener and the sensor determines edge sharpness, and that's precise to a tenth of a millimeter. The FF65 has that correction built in: screw on the camera and start shooting, with pinpoint stars all the way to the corners. The ED glass keeps chromatic aberration tight, even around bright stars.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">For whom yes, for whom no<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">For the (aspiring) astrophotographer who wants sharp wide-field shots directly without optical calculations, even when traveling. Not for: visual observers; this is a photographic tube with no eyepiece included.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What's in the box?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ZWO FF65 APO Optical Tube (Quintuplet)<\/li>\n\n\n\n<li>Pipe clamps and dovetails<\/li>\n\n\n\n<li>Transport case<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Specification<\/strong><\/td><td><strong>ZWO FF65 APO 65\/416 Quintuplet OTA<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong>Optical design<\/strong><\/td><td>Quintuplet apochromat (flatfield)<\/td><\/tr><tr><td><strong>Opening<\/strong><\/td><td>65 mm<\/td><\/tr><tr><td><strong>Focal length<\/strong><\/td><td>416 millimeters<\/td><\/tr><tr><td><strong>Opening ratio<\/strong><\/td><td>f\/6.4<\/td><\/tr><tr><td><strong>Image circle<\/strong><\/td><td>Full-frame, without separate flattener<\/td><\/tr><tr><td><strong>Use<\/strong><\/td><td>Astrophotography (OTA, without mount)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Take a look at all <a href=\"https:\/\/www.telescoop.nl\/en\/telescopes\/telescopes-for-astrophotography\/\">telescopes for astrophotography<\/a> or ask us for advice on the right camera and filter combination for this lens.<\/p>","protected":false},"excerpt":{"rendered":"<p><strong>This is just the tube (OTA), without mounting and tripod.<\/strong> You can choose the appropriate mounting and the accessories that come with it below.<\/p>\n<p>The ZWO FF65 APO 65\/416 quintuplet OTA delivers a completely flat field of view up to full-frame size thanks to built-in correction and ED glass. Lightweight and compact, ready for direct deep-sky photography.<\/p>","protected":false},"featured_media":21046,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[123],"product_cat":[567,428,3175,51],"product_tag":[3352,3353],"class_list":["post-15292","product","type-product","status-publish","has-post-thumbnail","product_brand-zwo","product_cat-refractor-telescopen","product_cat-telescopen-voor-astrofotografie","product_cat-refractor-ota","product_cat-telescopen","product_tag-sterrenkijker","product_tag-sterrenkijkers","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[90626,27732,32949,25687,15852],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":111636,"url":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/","url_meta":{"origin":15292,"position":0},"title":"ZWO Seestar S50 Pro","author":"Info telescoop","date":"25-08-2026","format":false,"excerpt":"The ZWO Seestar S50 Pro is the successor to the Seestar S50: 50 mm quadruplet APO (260 mm, f\/5.2), two 8.3 MP 4K sensors, a 63-degree wide-angle camera for the Milky Way up to 8K, three built-in filters, a 10,000 mAh battery (up to 9 hours), and 128 GB of storage. Four capture modes for...","rel":"","context":"With 5 comments","block_context":{"text":"With 5 comments","link":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/#comments"},"img":{"alt_text":"ZWO Seestar S50 Pro hero","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/15292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=15292"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/21046"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=15292"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=15292"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=15292"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=15292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}