{"id":34223,"date":"2025-11-17T15:31:35","date_gmt":"2025-11-17T14:31:35","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=34223"},"modified":"2026-07-20T14:20:44","modified_gmt":"2026-07-20T12:20:44","slug":"william-optics-0-72x-reducer-flattener-full-frame","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-0-72x-reducer-flattener-full-frame\/","title":{"rendered":"William Optics 0.72x Reducer\/Flattener Full-Frame"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>William Optics 0.72x Reducer\/Flattener Full-Frame: full-frame snelheid voor de grote apo's<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">De William Optics 0,72x is de reducer-flattener voor de grote apochromaten uit het WO-programma: de GT102 (met 3 inch focuser), FLT132 en GT153. Hij vlakt het beeldveld tot en met full-frame en verkort de brandpuntsafstand naar 0,72x: bijna een volle stop snelheidswinst en een ruimer beeldveld.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">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.<\/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-0.72x-ReducerFlattener-Full-Frame-1.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-2.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-3.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-4.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-5.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-6.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-7.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-8.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-9.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-0.72x-ReducerFlattener-Full-Frame-10.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" 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-0.72x-ReducerFlattener-Full-Frame-2.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" 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\">Optiek van Ohara-glas<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Het triplet van Japans Ohara-glas met FMC-coating houdt sterren scherp tot in de hoeken van een full-frame sensor, met maximaal contrast en minimale 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-0.72x-ReducerFlattener-Full-Frame-3.jpg\" alt=\"William Optics 0,72x reducer flattener full-frame\" 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\">Instelbare backfocus<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">De afstand tot de telescoop stel je in door de flattener te draaien; zo stem je hem af op verschillende camera's, van DSLR tot gekoelde CMOS. De M48-camerazijde met geintegreerde filterdraad neemt je filter direct in de trein op.<\/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\">Sluit je camera aan met de William Optics M48-adapter of 48 mm T-ring voor jouw bajonet.<\/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 GT102, FLT132 of GT153 die full-frame fotograferen<\/li><li>\u2713 Deep-sky fotografen die snelheidswinst zoeken op een grote apo<\/li><li>\u2717 Bezitters van kleinere WO-apo's: daarvoor zijn de Flat6AIII en Flat7A de berekende keuzes<\/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>Reducer-flattener<\/td><\/tr><tr><td><strong>Reduction factor<\/strong><\/td><td>0,72x<\/td><\/tr><tr><td><strong>Image circle<\/strong><\/td><td>Full-frame<\/td><\/tr><tr><td><strong>Optics<\/strong><\/td><td>Triplet, Ohara-glas, FMC-coating<\/td><\/tr><tr><td><strong>Suitable for<\/strong><\/td><td>William Optics GT102 (3 inch focuser), FLT132, GT153<\/td><\/tr><tr><td><strong>Telescope silk<\/strong><\/td><td>M92<\/td><\/tr><tr><td><strong>Camera side<\/strong><\/td><td>M48, met geintegreerde filterdraad<\/td><\/tr><tr><td><strong>Backfocus<\/strong><\/td><td>Instelbaar<\/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 0,72x reducer-flattener voor full-frame: Ohara-triplet, M92-telescoopzijde, M48-camerazijde met filterdraad en instelbare backfocus. Voor de GT102, FLT132 en GT153.<\/p>","protected":false},"featured_media":97615,"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-34223","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:\/\/www.telescoop.nl\/en\/william-optics-flat6a-iii-reducer-flattener-adjustable-2-inch\/","url_meta":{"origin":34223,"position":0},"title":"William Optics Flat6A III Reducer Flattener Adjustable 50.8 mm","author":"","date":"17-11-2025","format":false,"excerpt":"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.","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-Flat6AIII-Reducer-Flattener-Adjustable-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":34224,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-flat-gt-flattener-gran-turismo-refractor-2-inch\/","url_meta":{"origin":34223,"position":1},"title":"William Optics Flat GT Flattener for GranTurismo Refractor","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics Flat GT flattener voor de GranTurismo 71 en 81: M63-telescoopzijde, M48-camerazijde met filterdraad, full-frame correctie en slechts 22 mm lang.","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-Flat-GT-1.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":34223,"position":2},"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. Voor refractors van f\/5 tot f\/7.","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-Flat7A-Adjustable-Flattener-Reducer-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33961,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-fx-48mm-t-ring-camera-adapter\/","url_meta":{"origin":34223,"position":3},"title":"William Optics FX 48mm T-ring Camera adapter","author":"","date":"15-11-2025","format":false,"excerpt":"William Optics 48 mm T-ring voor Fujifilm X: M48-doorlaat, juiste flattener-afstand en reflectiearm geanodiseerd aluminium.","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-FX-48mm-T-ring-Camera-adapter-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33967,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-z-48mm-camera-adapter-t-ring-nikon\/","url_meta":{"origin":34223,"position":4},"title":"William Optics Z 48mm Camera adapter T-Ring Nikon","author":"","date":"15-11-2025","format":false,"excerpt":"William Optics 48 mm T-ring voor Nikon Z: M48-doorlaat, juiste flattener-afstand en reflectiearm geanodiseerd aluminium.","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-Z-48mm-Camera-adapter-T-Ring-Nikon-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33917,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-pleiades-68-260-apo-astrograph-ota\/","url_meta":{"origin":34223,"position":5},"title":"William Optics Pleiades 68\/260 APO Astrograph OTA","author":"","date":"15-11-2025","format":false,"excerpt":"William Optics Pleiades 68: zevenelements FPL-53 astrograaf 68\/260 f\/3,8 met ge\u00efntegreerde corrector en vlak full-frame beeld. Pure fotografiebuis met camera-adapters en Bahtinov-masker.","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\/34223","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=34223"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/97615"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=34223"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=34223"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=34223"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=34223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}