{"id":34222,"date":"2025-11-17T15:31:31","date_gmt":"2025-11-17T14:31:31","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=34222"},"modified":"2026-03-03T20:25:19","modified_gmt":"2026-03-03T19:25:19","slug":"william-optics-flat7a-adjustable-flattener-reducer","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/william-optics-flat7a-adjustable-flattener-reducer\/","title":{"rendered":"William Optics Flat7A Adjustable Flattener Reducer"},"content":{"rendered":"

William Optics Flat7A - Adjustable Flattener and Reducer<\/strong>
The William Optics Flat7A<\/strong> ensures that your star images stay sharp to the edges of your sensor. It corrects the curvature of the field of view caused by your primary optics. Without a flattener, stars are stretched and out of focus towards the edge. With the Flat7A, you get an even, clear image over almost your entire sensor.<\/p>\n\n\n\n

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

This flattener is ideal for telescopes with f\/5 to f\/7 and works especially well with large DSLR sensors. It is a triplet of high-quality Ohara glass and has a full FMC coating. This means maximum sharpness, contrast and minimal reflections.<\/p>\n\n\n\n

You mount it directly to the M92 thread of your focuser. Adjust the distance with the adjustable lock ring and screw it in place. This eliminates the need for additional extensions. For cameras, use the T2 connection. Filters with M48 threads easily screw onto the flattener for versatile shooting options.<\/p>\n\n\n\n

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

The Flat7A is solidly built and remains stable during long exposures. So you can concentrate fully on your astrophotography, without the hassle of vibrations or loose parts.<\/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>
Connection on camera side<\/td>T2<\/td><\/tr>
Telescope connection<\/td>M92<\/td><\/tr>
Focal reducer<\/td>0,8<\/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>
Total weight (kg)<\/td>0,27<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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

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.<\/p>","protected":false},"featured_media":97607,"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-34222","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":34228,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-flat6a-iii-reducer-flattener-adjustable-2-inch\/","url_meta":{"origin":34222,"position":0},"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":33973,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-flat68ii-flat7a-adapter\/","url_meta":{"origin":34222,"position":1},"title":"William Optics Flat68II Flat7A Adapter\u00a0","author":"Info telescoop","date":"15-11-2025","format":false,"excerpt":"William Optics Flat68II Flat7A comes as a 45mm long adapter that forms a connection between the Flat68II or Flat7A flatteners and your camera's T2 ring. \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-Flat68II-Flat7A-Adapter-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-Flat68II-Flat7A-Adapter-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat68II-Flat7A-Adapter-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat68II-Flat7A-Adapter-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":34222,"position":2},"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 - 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