{"id":34298,"date":"2025-11-17T18:26:31","date_gmt":"2025-11-17T17:26:31","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=34298"},"modified":"2026-03-03T20:25:12","modified_gmt":"2026-03-03T19:25:12","slug":"william-optics-flat68iii-flattener","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/william-optics-flat68iii-flattener\/","title":{"rendered":"William Optics Flat68III Flattener"},"content":{"rendered":"<p class=\"wp-block-paragraph\">The <strong>William Optics Flat68III<\/strong> flattener keeps your constellations sharp all the way to the edge of your picture. Without a flattener, stars are distorted and stretched toward the edge. With this lens, you correct that problem easily.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat68III-Flattener-1.jpg\" alt=\"William Optics Flat68III flattener top view with gold cap and inscription\" class=\"wp-image-34310\" title=\"\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This flattener is specially designed for your William Optics telescope. It is made of high-quality Japanese Ohara optics and fully FMC-coated. This means maximum sharpness and clarity for all your astrophotos.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat68III-Flattener-2.jpg\" alt=\"William Optics Flat68III flattener side view with scale and sharp lines\" class=\"wp-image-34311\" title=\"\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You mount it directly to the focuser with the solid thread. For your camera, use the T2 connection. Easily adjust the distance with the ribbed locking ring so you don't need separate extension tubes. Filters with M48 threads screw directly onto the flattener, ideal for visual or photographic setups.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In short, the Flat68III gives you a stable, reliable and flexible system. You get everything out of it for clear, sharp images on your camera.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Specifications<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Capacity<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Description<\/th><\/tr><\/thead><tbody><tr><td>Connection on camera side<\/td><td>T2<\/td><\/tr><tr><td>Telescope connection<\/td><td>M92<\/td><\/tr><tr><td>Focal reducer<\/td><td>1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>General<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Description<\/th><\/tr><\/thead><tbody><tr><td>Type<\/td><td>Flatteners, Correctors, Reducers<\/td><\/tr><tr><td>Design<\/td><td>Flattener<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>William Optics Flat68III comes with fully FMC-coated Ohara glass elements, adjustable back focus, T2 camera connector, M92 telescope connector and integrated M48 and M46 filter threads - ideal for full-frame astrophotography.<\/p>","protected":false},"featured_media":97650,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[56,469,587,3107,589,3105,3104,592],"product_tag":[],"class_list":["post-34298","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-telescoop-accessoires","product_cat-astro-fotografie","product_cat-camera-accessoires","product_cat-flatteners","product_cat-optische-accessoires-v1","product_cat-optische-accessoires","product_cat-overige-astrofotografie-accessoires","product_cat-reducers-flatteners","product_shipping_class-licht","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":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":34222,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-flat7a-adjustable-flattener-reducer\/","url_meta":{"origin":34298,"position":0},"title":"William Optics Flat7A Adjustable Flattener Reducer","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics Flat7A comes with adjustable 0.8x reducer, M92 thread, T2 camera thread, Ohara glass, anti-reflection coating and M48 filter thread - for razor-sharp images right to the edge of full-frame sensors.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat7A-Adjustable-Flattener-Reducer-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat7A-Adjustable-Flattener-Reducer-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat7A-Adjustable-Flattener-Reducer-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat7A-Adjustable-Flattener-Reducer-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":34223,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-0-72x-reducer-flattener-full-frame\/","url_meta":{"origin":34298,"position":1},"title":"William Optics 0.72x Reducer\/Flattener Full-Frame","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics 0.72x comes with 0.72x reducer\/flattener, M92 telescope connector, M48 camera thread, Ohara glass, integrated M48 filter thread and adjustable back focus - perfect for full-frame astrophotography with GT102, GT153, FLT132 and FLT156.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":34228,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-flat6a-iii-reducer-flattener-adjustable-2-inch\/","url_meta":{"origin":34298,"position":2},"title":"William Optics Flat6A III Reducer Flattener Adjustable 50.8 mm","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics Flat6AIII comes with adjustable 0.8x reducer, M63 telescope connector, M48 camera thread, Ohara glass, anti-reflection coating and distance scale - ideal for full-frame astrophotography with William Optics refractors.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":34297,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-flt91-flat6a-iii-special-edition\/","url_meta":{"origin":34298,"position":3},"title":"William Optics FLT91 Flat6A III Special Edition","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics FLT91 Flat6A III comes with custom flattener, 2\" telescope connector, camera adapter and fixed flange distance - designed for full field of view adjustment on the FLT 91 refractor.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-FLT91-Flat6A-III-Special-Edition.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-FLT91-Flat6A-III-Special-Edition.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-FLT91-Flat6A-III-Special-Edition.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-FLT91-Flat6A-III-Special-Edition.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":34085,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-flat61r-61-field-flattener-zenithstar\/","url_meta":{"origin":34298,"position":4},"title":"William Optics Flat61R 61 Field Flattener for ZenithStar","author":"Info telescoop","date":"16-11-2025","format":false,"excerpt":"William Optics Flat61R 61 comes with an adjustable M54 telescope connector, M48 camera connector and an integrated M48 filter thread for perfectly corrected astrophotography with ZenithStar telescopes. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat61R-61-Beeldveldegalisator-voor-ZenithStar-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat61R-61-Beeldveldegalisator-voor-ZenithStar-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat61R-61-Beeldveldegalisator-voor-ZenithStar-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat61R-61-Beeldveldegalisator-voor-ZenithStar-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":33971,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-6a-adapters-voor-flattener\/","url_meta":{"origin":34298,"position":5},"title":"William Optics 6A Adapters for Flattener\u00a0","author":"","date":"15-11-2025","format":false,"excerpt":"William Optics 6A comes as an adapter with an M92 telescope connector to an M63 connecting thread, suitable for the William Optics Flattener Flat6A or Flat6A III. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-6A-Adapters-voor-Flattener-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-6A-Adapters-voor-Flattener-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-6A-Adapters-voor-Flattener-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-6A-Adapters-voor-Flattener-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/34298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=34298"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/97650"}],"wp:attachment":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=34298"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=34298"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=34298"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=34298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}