{"id":34225,"date":"2025-11-17T15:31:43","date_gmt":"2025-11-17T14:31:43","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=34225"},"modified":"2026-08-23T15:08:43","modified_gmt":"2026-08-23T13:08:43","slug":"william-optics-50mm-1-25-inch-viewfinder-upright-view-90-degrees","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-50mm-1-25-inch-zoeker-rechtopstaand-beeld-90-graden\/","title":{"rendered":"William Optics 50 mm 1.25\u2033 Viewfinder Upright View 90\u00b0"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>William Optics 50 mm 1,25&#8243; Zoeker Rechtopstaand Beeld 90\u00b0: comfortabel richten, ook in het zenit<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This William Optics 50 mm finder scope makes aiming your telescope comfortable and intuitive. The 90-degree viewing angle means that even with objects directly overhead, you can look down into the finder in a relaxed manner, and the image is right-side up and correctly oriented left-to-right: it matches your star chart or app.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Unusual is the 1.25-inch eyepiece connection: you choose the eyepiece yourself and thus the magnification and field of view of your finder. The helical focuser smoothly focuses every eyepiece. The aluminum housing is lightweight and durable.<\/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-50mm-1.25-Zoeker-Oprichten-en-Zijwaarts-kijken-1.jpg\" alt=\"William Optics 50 mm finder 90 degree erect image\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-50mm-1.25-Zoeker-Oprichten-en-Zijwaarts-kijken-2.jpg\" alt=\"William Optics 50 mm finder 90 degree erect image\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-50mm-1.25-Zoeker-Oprichten-en-Zijwaarts-kijken-3.jpg\" alt=\"William Optics 50 mm finder 90 degree erect image\" 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-50mm-1.25-Zoeker-Oprichten-en-Zijwaarts-kijken-2.jpg\" alt=\"William Optics 50 mm finder 90 degree erect image\" 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\">More than a seeker<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">With a longer eyepiece, this is a wide-field finderscope, with a shorter eyepiece a full-fledged mini-refractor for quick glances. An instrument that grows with your observing style.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Included<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>50 mm finder scope with 90-degree viewing angle<\/li><li>Helicoid focuser<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Featured accessories<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Combine the finder with a 1.25-inch eyepiece of your choice; a focal length of around 20 to 25 mm provides a wide viewing field.<\/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 Observers who look around the zenith a lot and want to prevent neck pain<\/li><li>\u2713 Starhoppers who want to choose their own finder magnification<\/li><li>\u2717 If you want to aim without magnification: choose the LED finder<\/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>Opening<\/strong><\/td><td>50 mm (2 inches)<\/td><\/tr><tr><td><strong>Insight<\/strong><\/td><td>90 degrees<\/td><\/tr><tr><td><strong>Image<\/strong><\/td><td>Upright, laterally correct<\/td><\/tr><tr><td><strong>Ocula Connection<\/strong><\/td><td>1.25 inch, interchangeable<\/td><\/tr><tr><td><strong>Focus<\/strong><\/td><td>Helical<\/td><\/tr><tr><td><strong>Housing<\/strong><\/td><td>Aluminum<\/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 50 mm finder scope with 90-degree viewing angle, upright and laterally correct image, helical focuser, and interchangeable 1.25-inch eyepieces. Aluminum housing.<\/p>","protected":false},"featured_media":97631,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[56,589,501],"product_tag":[],"class_list":["post-34225","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-telescoop-accessoires","product_cat-optische-accessoires-v1","product_cat-red-dot-finders-en-reflex-sights","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":34141,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-90-125-zenitprisma-redcat\/","url_meta":{"origin":34225,"position":0},"title":"William Optics 90\u00b0 1.25\u2033 Zenith prism RedCat","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics 90-degree zenith prism for the RedCat 51: BAK-4 prism with anti-reflection coating, M56 mount with ring clamp and 1.25-inch eyepiece side. 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Erect, true-to-life image for nature and astronomy.","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-45%C2%B0-125-op-125-Amici-prisma.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":34220,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-90-2-diagonaal-spiegel-dura-bright\/","url_meta":{"origin":34225,"position":3},"title":"William Optics 90\u00b0 2\u2033 Diagonal Mirror Dura Bright","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics Dura Bright 90-degree 2-inch diagonal mirror: 99% dielectric coating, 12 mm mirror at 1\/12 lambda, carbon housing, compression ring, filter thread, and 1.25-inch adapter.","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-90%C2%B0-2-Diagonaal-Spiegel-Dura-Bright-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":34226,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-led-zoeker-met-3-5-inch-snelkoppeling-en-t-stuk\/","url_meta":{"origin":34225,"position":4},"title":"William Optics LED viewfinder with quick release and 90 mm holder","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics LED finder (red dot) with quick-release, T-bracket, and 90 mm holder: aiming with both eyes open, without magnification. For the ZS66 and ZS80, among others.","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-LED-zoeker-met-snelkoppeling-T-stuk-en-houder-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":26910,"url":"https:\/\/www.telescoop.nl\/en\/omegon-9x50-zoeker-met-schuine-inkijk\/","url_meta":{"origin":34225,"position":5},"title":"Omegon 9x50 Erect-Image Right-Angle Finder Scope","author":"","date":"26-08-2025","format":false,"excerpt":"Optische zoeker 9x50 met gehoekte inkijk \u00e9n rechtopstaand beeld. Comfortabele houding en een beeld dat overeenkomt met je sterrenkaart.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon 9x50 Zoeker met schuine inkijk","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-9x50-zoeker-schuine-hoek-mit-rechtopstaand-en-niet-omgekeerd-beeld-zwart.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-9x50-zoeker-schuine-hoek-mit-rechtopstaand-en-niet-omgekeerd-beeld-zwart.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-9x50-zoeker-schuine-hoek-mit-rechtopstaand-en-niet-omgekeerd-beeld-zwart.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-9x50-zoeker-schuine-hoek-mit-rechtopstaand-en-niet-omgekeerd-beeld-zwart.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-9x50-zoeker-schuine-hoek-mit-rechtopstaand-en-niet-omgekeerd-beeld-zwart.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-9x50-zoeker-schuine-hoek-mit-rechtopstaand-en-niet-omgekeerd-beeld-zwart.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/34225","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=34225"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/97631"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=34225"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=34225"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=34225"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=34225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}