{"id":34228,"date":"2025-11-17T15:31:55","date_gmt":"2025-11-17T14:31:55","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=34228"},"modified":"2026-03-20T09:49:30","modified_gmt":"2026-03-20T08:49:30","slug":"william-optics-flat6a-iii-reducer-flattener-adjustable-2-inch","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-flat6a-iii-reducer-flattener-adjustable-2-inch\/","title":{"rendered":"William Optics Flat6A III Reducer Flattener Adjustable 50.8 mm"},"content":{"rendered":"

The William Optics Flat6AIII<\/strong> is designed to smooth the image of your refractor and keep your photography sharp. It combines a flattener with a 0.8x reducer for an optimal field of view. So you get bright, sharp stars all the way to the edges of your sensor.<\/p>\n\n\n\n

\"William<\/figure>\n\n\n\n

The flattener is adjustable, so you can match it perfectly to your telescope. This ensures that your camera on full-frame or APS-C sensors will correctly expose and focus over virtually the entire field of view. It is suitable for William Optics GT71, GT81, Z81 and Z103, but also works with other refractors between f\/6 and f\/7.5.<\/p>\n\n\n\n

You easily mount it via your telescope's M63 connector. A 48 mm filter thread lets you add filters without losing image quality. All inner surfaces are black-coated to prevent reflections, and high-quality Ohara glass elements keep your image clear and rich in contrast.<\/p>\n\n\n\n

\"William<\/figure>\n\n\n\n

The Flat6AIII makes astrophotography with your refractor easier and more precise. You get a larger sharp area, less distortion and more reliable results with long exposures.<\/p>\n\n\n\n

Specifications<\/strong><\/h3>\n\n\n\n

Capacity<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Focal reducer<\/td>0,8<\/td><\/tr>
Filter thread<\/td>yes (M48)<\/td><\/tr>
Connection on camera side<\/td>M48<\/td><\/tr>
Telescope connection<\/td>M63<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

General<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Type<\/td>Flatteners, Correctors, Reducers<\/td><\/tr>
Design<\/td>Flattener<\/td><\/tr>
Color<\/td>Gray<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

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.<\/p>","protected":false},"featured_media":97603,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[56,469,3107,3105,589,3104,3106,592],"product_tag":[],"class_list":["post-34228","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-telescoop-accessoires","product_cat-astro-fotografie","product_cat-flatteners","product_cat-optische-accessoires","product_cat-optische-accessoires-v1","product_cat-overige-astrofotografie-accessoires","product_cat-reducers","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":34223,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-0-72x-reducer-flattener-full-frame\/","url_meta":{"origin":34228,"position":0},"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":"","width":0,"height":0},"classes":[]},{"id":34222,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-flat7a-adjustable-flattener-reducer\/","url_meta":{"origin":34228,"position":1},"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":"","width":0,"height":0},"classes":[]},{"id":34224,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-flat-gt-flattener-gran-turismo-refractor-2-inch\/","url_meta":{"origin":34228,"position":2},"title":"William Optics Flat GT Flattener for GranTurismo Refractor","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics Flat GT comes with M63 telescope mount, M48 camera thread, integrated filter thread, 2-element optics, full-frame correction and distance ring for GT71 and GT81 - for sharp stars all the way to the image edge.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":34297,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-flt91-flat6a-iii-special-edition\/","url_meta":{"origin":34228,"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":"","width":0,"height":0},"classes":[]},{"id":33946,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-m48-camera-adapter-compatibel-met-nikon\/","url_meta":{"origin":34228,"position":4},"title":"William Optics M48 Camera adapter compatible with Nikon","author":"","date":"15-11-2025","format":false,"excerpt":"William Optics M48 comes as a camera adapter to connect your Nikon camera to an M48 thread, ideal for the Flat6AIII flattener. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":33994,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-m63-flat6aiii-adapters-voor-flattener\/","url_meta":{"origin":34228,"position":5},"title":"William Optics M63 Flat6AIII Adapters for Flattener","author":"","date":"16-11-2025","format":false,"excerpt":"William Optics M63 Flat6AIII comes with an M63 female connector, a 2\" push-in connector and an integrated 48mm filter thread for the Flat6AIII flattener. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/34228","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=34228"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/97603"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=34228"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=34228"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=34228"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=34228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}