{"id":33709,"date":"2025-11-14T13:59:32","date_gmt":"2025-11-14T12:59:32","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=33709"},"modified":"2026-09-10T14:38:41","modified_gmt":"2026-09-10T12:38:41","slug":"william-optics-ultracat-76-365-apo-wifd-30th-anniversary-edition-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-ultracat-76-365-apo-wifd-30th-anniversary-edition-ota\/","title":{"rendered":"William Optics UltraCat 76\/365 APO WIFD 30th Anniversary Edition OTA"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>Numbered anniversary edition: 30 years of William Optics<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>William Optics UltraCat 76 WIFD 30th Anniversary Edition<\/strong> Celebrating thirty years of innovation. Each telescope is numbered, features a unique laser engraving, and comes with a commemorative certificate. With the included UniGuide 32 mm guide scope, you are also immediately ready for guided astrophotography.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"33710\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-76-365-76-30th-Apochromatische-refractor-UltraCat-WIFD-Anniversary-Edition-7.jpg\" alt=\"William Optics UltraCat 76 30th Anniversary Edition, full view\" class=\"wp-image-33710\" title=\"\"><\/figure>\n<\/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\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-76-365-76-30th-Apochromatische-refractor-UltraCat-WIFD-Anniversary-Edition-3.jpg\" alt=\"The UltraCat 76 with UniGuide 32 mm riflescope\" class=\"wp-image-33714\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h4 class=\"wp-block-heading\">Fast f\/4.8 system with corrector<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The 76 mm optics with integrated corrector gather plenty of light at f\/4.8: short exposures and sharp stars right to the corners, without a separate flattener. The internal WIFD focuser keeps the balance constant under camera weight, exactly what an anniversary tube in this class is supposed to do.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>In the box<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Optical tube UltraCat 76\/365 with WIFD focuser and corrector<\/li>\n\n\n\n<li>UniGuide 32 mm scope<\/li>\n\n\n\n<li>Bahtinov mask<\/li>\n\n\n\n<li>Commemorative certificate with numbered laser engraving<\/li>\n\n\n\n<li>Transport bag<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Featured accessories<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The riflescope is already included; with a William Optics M48 camera adapter for your mount, the setup is complete.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">For whom yes, for whom no<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">For: demanding astrophotographers and collectors who appreciate a numbered edition with complete equipment. Not for: those who buy purely on price per millimeter of aperture; the RedCat 71 WIFD offers comparable performance without the anniversary edition.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Specifications<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Optical design<\/td><td>Apochromat, Petzval with corrector<\/td><\/tr><tr><td>Opening<\/td><td>76 mm<\/td><\/tr><tr><td>Focal length<\/td><td>365 millimeters<\/td><\/tr><tr><td>Opening ratio<\/td><td>f\/4,8<\/td><\/tr><tr><td>Focuser<\/td><td>WIFD (intern)<\/td><\/tr><tr><td>Riflescope<\/td><td>UniGuide 32 mm (included)<\/td><\/tr><tr><td>Edition<\/td><td>30th Anniversary, numbered with certificate<\/td><\/tr><tr><td>Execution<\/td><td>OTA (loose tube)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Unsure about the right tube for your camera and mount? The <a href=\"https:\/\/www.telescoop.nl\/en\/telescope-selection-aid\/\">telescope selection aid<\/a> helps you choose. Also view all <a href=\"https:\/\/www.telescoop.nl\/en\/telescopes\/refracting-telescopes\/\">Refracting telescopes<\/a> and the full range of <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/william-optics\/\">William Optics<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>William Optics UltraCat 76 WIFD 30th Anniversary: numbered anniversary apochromat 76\/365 f\/4.8 with internal focuser, supplied with UniGuide 32 mm guide scope, Bahtinov mask, certificate, and transport case.<\/p>","protected":false},"featured_media":97247,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[51,428,3175,567],"product_tag":[],"class_list":["post-33709","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-telescopen","product_cat-telescopen-voor-astrofotografie","product_cat-refractor-ota","product_cat-refractor-telescopen","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":[15860,33941,33946,34082],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":33659,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-ap-51-250-apochromatische-refractor-redcat-wifd\/","url_meta":{"origin":33709,"position":0},"title":"William Optics AP 51\/250 Apochromatic Refractor RedCat WIFD OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics RedCat 51 WIFD: the most famous compact astrograph with a four-element Petzval optical design (FPL53\/FPL51) and internal focuser. 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Supplied with tube rings, Arca\/Vixen dovetail, handle, Bahtinov mask, adapters, and carrying case.","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-AP-81-559-81-Apochromatische-refractor-ZenithStar-WIFD-Red-OTA-3.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33664,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-ap-51-250-apochromatische-refractor-spacecat-wifd-ota\/","url_meta":{"origin":33709,"position":2},"title":"William Optics AP 51\/250 Apochromatic Refractor SpaceCat WIFD OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics SpaceCat 51 WIFD: the same f\/4.9 Petzval optics as the RedCat 51 in the SpaceCat version, featuring an internal focuser. Supplied with a Bahtinov mask, dovetail bar, and carrying case.","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-AP-51250-Apochromatische-refractor-SpaceCat-WIFD-OTA-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33699,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-ap-71-350-71-apochromatische-refractor-redcat-wifd\/","url_meta":{"origin":33709,"position":3},"title":"William Optics AP 71\/350 71 Apochromatic Refractor RedCat WIFD OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics RedCat 71 WIFD: Petzval apochromat 71\/350 f\/4.9 with internal WIFD focuser. Flat, color-pure image up to full-frame. 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