{"id":90976,"date":"2025-12-03T13:42:56","date_gmt":"2025-12-03T12:42:56","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=90976"},"modified":"2026-08-23T15:09:53","modified_gmt":"2026-08-23T13:09:53","slug":"sky-watcher-1-25-inch-deluxe-dielectric-zenith-mirror","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/sky-watcher-1-25-inch-deluxe-dielectric-zenitspiegel\/","title":{"rendered":"Sky-Watcher 1.25-inch Deluxe Dielectric Zenith Mirror (99% Reflectivity)"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>Sky-Watcher Deluxe Dielectric Zenith Mirror: 99%\u2014Your Light Deserves It<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every mirror in the light path causes light loss; the question is how much. The dielectric coating on this Deluxe zenith mirror reflects 99% of the incident light, compared to approximately 90% for a standard mirror. You can see that difference in brightness and contrast, especially with faint deep-sky objects and subtle planetary details.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/12\/Skywatcher-Deluxe-90\u00b0-125-Zenitspiegel.jpg\" alt=\"Skywatcher Deluxe 90\u00b0 1.25-inch dielectric zenith mirror diagonal in black-silver housing side view with eyepiece holder and insertion mount.\" title=\"\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The dielectric layer is also hard and wear-resistant, allowing the mirror to maintain its performance for years. Good to know: a star diagonal shows the image right-side up but mirrored (left and right reversed). For viewing the starry sky, this does not matter; if you want to view landscapes or nature during the day, choose an erecting prism that fully corrects the image.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Features<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>Dielectric coating with 99% reflectance<\/li>\n\n\n<li>Noticeably more clarity and contrast than a standard mirror<\/li>\n\n\n<li>Hard, durable mirror coating<\/li>\n\n\n<li>1.25-inch mount<\/li>\n\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Compatibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Suitable for refractors and Maksutovs with a 1.25-inch focuser connection: the logical upgrade from any included star diagonal.<\/p>\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<\/td><\/tr><tr><td><strong>Viewing angle<\/strong><\/td><td>90 degrees<\/td><\/tr><tr><td><strong>Coating<\/strong><\/td><td>Dielectric, 99% reflection<\/td><\/tr><tr><td><strong>Mount<\/strong><\/td><td>1.25 inches<\/td><\/tr><tr><td><strong>Image<\/strong><\/td><td>Upright, in mirror image<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The disassembly of <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/sky-watcher\/\">Sky-Watcher<\/a> is a base that will last you for years. Unsure which mount is best for your telescope and your goals? Contact us, we'd be happy to help you decide.<\/p>","protected":false},"excerpt":{"rendered":"<p>High-quality 1.25-inch first-mirror with dielectric coating and 99% reflectivity: maximum light and contrast to your eyepiece, built to last for decades.<\/p>","protected":false},"featured_media":98239,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[542],"product_cat":[589,591,56,3142],"product_tag":[],"class_list":["post-90976","product","type-product","status-publish","has-post-thumbnail","product_brand-sky-watcher","product_cat-optische-accessoires-v1","product_cat-diagonalen","product_cat-telescoop-accessoires","product_cat-zenitspiegels-en-zenitprisma-diagonals","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":90980,"url":"https:\/\/www.telescoop.nl\/en\/sky-watcher-2-inch-deluxe-dielectric-star-diagonal\/","url_meta":{"origin":90976,"position":0},"title":"Sky-Watcher 2-inch Deluxe Dielectric Zenith Mirror (99% Reflectivity)","author":"","date":"03-12-2025","format":false,"excerpt":"2-inch zenith mirror with 99% dielectric coating and 1.25-inch adapter: maximum light transmission and contrast for your entire eyepiece set.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":25687,"url":"https:\/\/www.telescoop.nl\/en\/omegon-zenitspiegel-90-2-inch-99-dielektrisch\/","url_meta":{"origin":90976,"position":1},"title":"Omegon Zenith mirror 90\u00b0 2 inch 99% dielectric","author":"","date":"24-08-2025","format":false,"excerpt":"Omegon Zenith mirror 90\u00b0 2 inch 99% dielectric - comes with 2'' ring clamp and 1.25'' adapter. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Zenitspiegel 90\u00b0 2 inch 99% dielektrisch","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zenitspiegel-90d-2-dielektrische-reflectiewerende-laag.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zenitspiegel-90d-2-dielektrische-reflectiewerende-laag.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zenitspiegel-90d-2-dielektrische-reflectiewerende-laag.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zenitspiegel-90d-2-dielektrische-reflectiewerende-laag.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zenitspiegel-90d-2-dielektrische-reflectiewerende-laag.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zenitspiegel-90d-2-dielektrische-reflectiewerende-laag.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25670,"url":"https:\/\/www.telescoop.nl\/en\/omegon-carbonline-zenitspiegel-90-2-inch-sc-99-dielektrisch\/","url_meta":{"origin":90976,"position":2},"title":"Omegon Carbonline Zenith mirror 90\u00b0 2 inch SC 99% dielectric","author":"","date":"24-08-2025","format":false,"excerpt":"Omegon Carbonline Zenith mirror 90\u00b0 2 inch SC 99% dielectric - comes with SC screw connection and compression ring. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Carbonline Zenitspiegel 90\u00b0 2 inch SC 99% dielektrisch","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":34219,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-90-125-dura-bright-zenitspiegel\/","url_meta":{"origin":90976,"position":3},"title":"William Optics 90\u00b0, 1.25\u2033 Dura Bright zenith mirror","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics Dura Bright 90-degree 1.25-inch zenith mirror: 99% dielectric coating, 12-mm-thick mirror at 1\/10 wavelength, carbon side plates, and compression ring.","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%B0-125-Dura-Bright-zenitspiegel-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":25663,"url":"https:\/\/www.telescoop.nl\/en\/omegon-carbonline-zenitspiegel-90-125-inch-99-dielektrisch\/","url_meta":{"origin":90976,"position":4},"title":"Omegon Carbonline Zenith mirror 90\u00b0 1.25 inch 99% dielectric","author":"","date":"24-08-2025","format":false,"excerpt":"\u00a0 \u00a0 Omegon Carbonline Zenith mirror 90\u00b0 1.25 inch 99% dielectric - comes with compression ring and carbon-aluminum housing.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Carbonline Zenitspiegel 90\u00b0 1,25 inch 99% dielektrisch","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-1-25-99-dielektrisch.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-1-25-99-dielektrisch.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-1-25-99-dielektrisch.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-1-25-99-dielektrisch.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-1-25-99-dielektrisch.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-1-25-99-dielektrisch.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25677,"url":"https:\/\/www.telescoop.nl\/en\/omegon-carbonline-zenitspiegel-90-2-inch-99-dielektrisch-twistlock\/","url_meta":{"origin":90976,"position":5},"title":"Omegon Carbonline Zenith Mirror 90\u00b0 2 inch 99% dielectric Twistlock","author":"","date":"24-08-2025","format":false,"excerpt":"\u00a0 Omegon Carbonline Zenith Mirror 90\u00b0 2 inch 99% dielectric Twistlock - comes with 2'' twistlock and 1.25'' adapter.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Carbonline Zenitspiegel 90\u00b0 2 inch 99% dielektrisch Twistlock","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch-2.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch-2.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Carbonline-zenitspiegel-90d-SC-2-99-dielektrisch-2.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/90976","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=90976"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/98239"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=90976"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=90976"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=90976"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=90976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}