{"id":34228,"date":"2025-11-17T15:31:55","date_gmt":"2025-11-17T14:31:55","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=34228"},"modified":"2026-07-20T14:20:45","modified_gmt":"2026-07-20T12:20:45","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":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>William Optics Flat6A III Reducer Flattener Instelbaar 50,8 mm: de veelzijdigste flattener-reducer van WO<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">De William Optics Flat6AIII combineert een beeldveldvlakker met een 0,8x reducer. Elke refractor levert van nature een licht gebogen beeldvlak; een vlakke camerasensor snijdt daar doorheen, waardoor sterren in de hoeken uitrekken tot streepjes. Een flattener rekent die kromming weg, zodat sterren tot in de hoeken klein en rond blijven. De reducer verkort daarnaast de brandpuntsafstand: een ruimer beeldveld en kortere belichtingen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De correctie is berekend tot en met full-frame en werkt op APS-C vrijwel over het hele veld. Gemaakt voor de William Optics GT71, GT81, Z81 en Z103, en breder inzetbaar op refractors van f\/6 tot f\/7,5.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-1.jpg\" alt=\"William Optics Flat6AIII instelbare flattener reducer\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-2.jpg\" alt=\"William Optics Flat6AIII instelbare flattener reducer\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-3.jpg\" alt=\"William Optics Flat6AIII instelbare flattener reducer\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-4.jpg\" alt=\"William Optics Flat6AIII instelbare flattener reducer\" title=\"\"><\/figure><\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8d39b2df wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:38%\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-2.jpg\" alt=\"William Optics Flat6AIII instelbare flattener reducer\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:62%\">\n<h4 class=\"wp-block-heading\">Instelbaar met schaalverdeling<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Via de instelring met afstandsschaal stem je de flattener af op jouw telescoop en camera; de gevonden waarde stel je de volgende sessie zo weer in. De zwart gecoate binnenzijde onderdrukt reflecties.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8d39b2df wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:38%\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-Flat6AIII-Reducer-Flattener-Adjustable-3.jpg\" alt=\"William Optics Flat6AIII instelbare flattener reducer\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:62%\">\n<h4 class=\"wp-block-heading\">On the train<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Telescoopzijde M63, camerazijde M48 met 48 mm filterdraad. Met de William Optics M48-adapter voor jouw bajonet staat de sensor direct op de juiste afstand; de losse M63-adapter met 2 inch steek maakt montage in een 2 inch focuser mogelijk.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Featured accessories<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Combineer de Flat6AIII met de M48-adapter voor jouw cameramerk en, bij een 2 inch focuser, met de M63\/2 inch adapter.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">For whom yes and for whom no<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u2713 Bezitters van een GT71, GT81, Z81 of Z103 die fotograferen<\/li><li>\u2713 Bezitters van andere f\/6 tot f\/7,5 refractors die veld en snelheid willen winnen<\/li><li>\u2717 Bezitters van snellere optiek (f\/5): kijk dan naar de Flat7A<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Specifications<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Type<\/strong><\/td><td>Instelbare flattener-reducer<\/td><\/tr><tr><td><strong>Reduction factor<\/strong><\/td><td>0,8x<\/td><\/tr><tr><td><strong>Optics<\/strong><\/td><td>Ohara-glas, antireflectiecoating<\/td><\/tr><tr><td><strong>Suitable for<\/strong><\/td><td>WO GT71\/GT81\/Z81\/Z103; refractors f\/6 tot f\/7,5<\/td><\/tr><tr><td><strong>Telescope silk<\/strong><\/td><td>M63<\/td><\/tr><tr><td><strong>Camera side<\/strong><\/td><td>M48, met 48 mm filterdraad<\/td><\/tr><tr><td><strong>Setting<\/strong><\/td><td>Instelring met afstandsschaal<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You can find more accessories for this merk at the <a href=\"\/en\/brands\/william-optics\/\">William Optics merk Page<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>William Optics Flat6AIII adjustable flattener-reducer 0.8x: Ohara glass, M63 telescope side, M48 camera side, 48mm filter thread and distance scale. For GT71, GT81, Z81, Z103 and f\/6 to f\/7.5 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":[33994],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":34297,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-flt91-flat6a-iii-special-edition\/","url_meta":{"origin":34228,"position":0},"title":"William Optics FLT91 Flat6A III Special Edition","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics Flat6AIII Special Edition voor de FluoroStar 91: speciaal berekende flattener met 2 inch aansluiting en meegeleverde camera-adapter met vaste flange-afstand.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-FLT91-Flat6A-III-Special-Edition.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"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 verstelbare flattener-reducer 0,8x: Ohara-triplet met FMC-coating, M92-telescoopzijde, T2-camerazijde en M48-filterdraad. 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