{"id":107760,"date":"2026-04-29T17:50:17","date_gmt":"2026-04-29T15:50:17","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=107760"},"modified":"2026-08-23T15:08:43","modified_gmt":"2026-08-23T13:08:43","slug":"televue-zenith-mirror-90-125","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/televue-zenitspiegel-90-125\/","title":{"rendered":"TeleVue Zenith Mirror 90\u00b0 1.25\u2033 \u2013 Diagonal Mirror"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>TeleVue Zenitspiegel 90\u00b0 1,25&#8243; : Diagonaalspiegel: klassieke zenitspiegel in 1,25 inch<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The TeleVue 90-degree star diagonal is the entry-level model in the diagonal lineup: an aluminum coating with 96 percent reflectivity, mounted in the same sturdy housing as the more expensive models.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For anyone replacing an included standard diagonal, the gain in contrast and star images is immediately visible; the difference with the Everbrite lies in the final percentages of reflection.<\/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\/2026\/04\/TeleVue-Zenitspiegel-90d-1-25-.jpg\" alt=\"TeleVue Zenith Mirror 90\u00b0 1.25&quot;\" : title=\"\"><\/figure><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Preventing the weakest link<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A telescope is only as good as its worst element in the light path. A mediocre star diagonal costs contrast and introduces astigmatism, which is immediately visible at high magnification.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Anyone who invests in eyepieces of this caliber wants the light to reach the eyepiece unaffected. That is what this diagonal is for.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">The trade-off with the Everbrite<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Ninety-six versus ninety-nine percent reflection seems like little, but on the faintest objects every percent counts. The Everbrite is the mirror for those seeking the maximum; this classic version is the sensible upgrade for any entry-level system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The housing and the clamping ring are of the same quality, so you do not compromise mechanically.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Featured accessories<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The diagonal combines with every eyepiece from the TeleVue lineup; the compression ring also securely holds heavy 2-inch eyepieces. A nebula filter can be screwed directly into the nose of the mirror.<\/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 The first upgrade of an included diagonal<\/li><li>\u2713 Refractors and catadioptric telescopes with 1.25 inch<\/li><li>\u2713 Looking for quality without an Everbrite budget<\/li><li>\u2717 Whoever wants maximum reflection, see the Everbrite<\/li><li>\u2717 Newtons<\/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>Zenith mirror 90 degrees<\/td><\/tr><tr><td><strong>Reflection<\/strong><\/td><td>96 percent, aluminum coating<\/td><\/tr><tr><td><strong>Connection<\/strong><\/td><td>1.25 inches<\/td><\/tr><tr><td><strong>Filter thread<\/strong><\/td><td>In the nose<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You can find the complete product line for this merk at the <a href=\"\/en\/brands\/televue\/\">TeleVue merk Page<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Classic TeleVue 90-degree 1.25-inch star diagonal with 96 percent reflectivity.<\/p>","protected":false},"featured_media":107762,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1551],"product_cat":[56,591,3105,3142],"product_tag":[],"class_list":["post-107760","product","type-product","status-publish","has-post-thumbnail","product_brand-televue","product_cat-telescoop-accessoires","product_cat-diagonalen","product_cat-optische-accessoires","product_cat-zenitspiegels-en-zenitprisma-diagonals","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":107651,"url":"https:\/\/www.telescoop.nl\/en\/televue-everbrite-90-125-zenitspiegel\/","url_meta":{"origin":107760,"position":0},"title":"TeleVue Everbrite 90\u00b0 1.25\u2033 - Diagonal Mirror","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Everbrite 90-degree 1.25-inch dielectric zenith mirror with 99 percent reflectivity.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Everbrite zenitspiegel, 90\u00b0, 1,25\" 90 graden dielectric spiegel-diagonaal met 1,25 inch telescoop- en oculairaansluiting en klemring op zwarte behuizing","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Everbrite-zenitspiegel-90d-1-25-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Everbrite-zenitspiegel-90d-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Everbrite-zenitspiegel-90d-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Everbrite-zenitspiegel-90d-1-25-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107655,"url":"https:\/\/www.telescoop.nl\/en\/televue-everbrite-60-125-zenitspiegel\/","url_meta":{"origin":107760,"position":1},"title":"TeleVue Everbrite 60\u00b0 1.25\u2033 \u2013 Diagonal Mirror","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Everbrite 60 graden spiegel van 1,25 inch voor natuurwaarneming met een refractor.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Everbrite zenitspiegel, 60\u00b0, 1,25\" 60 graden Everbrite dielectric spiegel-diagonaal met rechtopstaand beeld en 1,25 inch telescoopaansluiting in zwarte aluminium behuizing","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Everbrite-zenitspiegel-60d-1-25-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Everbrite-zenitspiegel-60d-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Everbrite-zenitspiegel-60d-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Everbrite-zenitspiegel-60d-1-25-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107666,"url":"https:\/\/www.telescoop.nl\/en\/televue-everbrite-90-2-zenitspiegel\/","url_meta":{"origin":107760,"position":2},"title":"TeleVue Everbrite 90\u00b0 2\u2033 - Diagonal Mirror","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Everbrite dielectric zenith mirror 90 degrees 2 inch for large eyepieces.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Zenitspiegel Everbrite 90\u00b0 2\" 90 graden Everbrite dielectric zenitspiegel met 2 inch telescoop- en oculairaansluiting, klemring en zwarte aluminium behuizing","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Zenitspiegel-Everbrite-90d-2-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Zenitspiegel-Everbrite-90d-2-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Zenitspiegel-Everbrite-90d-2-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Zenitspiegel-Everbrite-90d-2-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107763,"url":"https:\/\/www.telescoop.nl\/en\/televue-everbrite-sc-90-2\/","url_meta":{"origin":107760,"position":3},"title":"TeleVue Everbrite SC 90\u00b0 2\u2033 \u2013 Diagonal Mirror","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Everbrite SC-diagonaal van 2 inch die rechtstreeks op de SC-achterdraad schroeft.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Diagonaal spiegel Everbrite SC 90\u00b0 2\" Everbrite dielectric 90 graden spiegel-diagonaal met 2 inch oculairaansluiting en TeleVue logo op zwarte behuizing","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Diagonaal-spiegel-Everbrite-SC-90d-2-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Diagonaal-spiegel-Everbrite-SC-90d-2-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Diagonaal-spiegel-Everbrite-SC-90d-2-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Diagonaal-spiegel-Everbrite-SC-90d-2-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":34220,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-90-2-diagonaal-spiegel-dura-bright\/","url_meta":{"origin":107760,"position":4},"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":90974,"url":"https:\/\/www.telescoop.nl\/en\/sky-watcher-1-25-inch-zenitspiegel-90-graden\/","url_meta":{"origin":107760,"position":5},"title":"Sky-Watcher 1.25 inch Erecting Prism (90 degrees)","author":"","date":"03-12-2025","format":false,"excerpt":"Classic 90-degree star diagonal in 1.25 inch: comfortable viewing position for refractors and Maksutovs, with fully coated mirror for a bright image.","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\/107760","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=107760"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/107762"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=107760"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=107760"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=107760"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=107760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}