{"id":25659,"date":"2025-08-24T18:00:22","date_gmt":"2025-08-24T16:00:22","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=25659"},"modified":"2026-06-09T11:46:12","modified_gmt":"2026-06-09T09:46:12","slug":"omegon-zenith-mirror-90-125-inch","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-zenitspiegel-90-125-inch\/","title":{"rendered":"Omegon Zenith mirror 90\u00b0 1.25 inches"},"content":{"rendered":"

Omegon Zenith mirror 90\u00b0 1.25 inches is an indispensable accessory for comfortable stargazing. In many refractors, Schmidt-Cassegrains and Maksutovs you would have to look at an awkward angle without a zenith mirror. With this 90\u00b0 mirror diagonal, you observe straight up without forcing your neck.<\/p>\n\n\n\n

A zenith mirror is also called star diagonal<\/em> or star diagonal<\/em> and is the standard choice for astronomical observations. Unlike an Amici prism, the zenith mirror does not fully correct the image: it remains left-right mirrored. This is not a problem for astronomy - this is precisely why you get the most high-contrast image without diffraction lines, ideal for the moon, planets and deep-sky objects.<\/p>\n\n\n\n

The optics of this Omegon zenith mirror are multi-coated, which reduces reflections and maintains high light transmission. The result: sharper images and more contrast, even at high magnifications. The ring clamp holds your eyepieces securely without scratching, and the built-in 1.25'' filter thread allows you to easily use moon or color filters.<\/p>\n\n\n\n

Observation goals<\/h3>\n\n\n\n

Perfect for astronomical observations: the moon, planets and deep-sky objects. Thanks to the 90\u00b0 view, viewing is comfortable even when objects are high in the sky. Not suitable for terrestrial observations, as the image is not true to nature.<\/p>\n\n\n\n

Specifications<\/h3>\n\n\n\n
    \n
  • Type: zenith mirror (star diagonal \/ star diagonal)<\/li>\n\n\n\n
  • Viewing angle: 90\u00b0<\/li>\n\n\n\n
  • Connection: 1.25'' to 1.25''<\/li>\n\n\n\n
  • Optics: multicoating against reflections<\/li>\n\n\n\n
  • Image orientation: upright but left-right mirrored<\/li>\n\n\n\n
  • Ring clamp: yes<\/li>\n\n\n\n
  • Filter thread: yes (1.25'')<\/li>\n\n\n\n
  • Compatibility: refractors, Schmidt-Cassegrains and Maksutovs with 1.25' focuser<\/li>\n\n\n\n
  • Color: black<\/li>\n<\/ul>\n\n\n\n

    <\/p>","protected":false},"excerpt":{"rendered":"

    Omegon Zenith mirror 90\u00b0 1.25 inch - comes with 1.25'' ring clamp and filter thread.<\/p>\n

    \u00a0<\/h3>","protected":false},"featured_media":25662,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[56,591,589,3142],"product_tag":[],"class_list":["post-25659","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescoop-accessoires","product_cat-diagonalen","product_cat-optische-accessoires-v1","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":107651,"url":"https:\/\/www.telescoop.nl\/en\/televue-everbrite-90-125-zenitspiegel\/","url_meta":{"origin":25659,"position":0},"title":"TeleVue Everbrite 90\u00b0 1.25\" - Diagonal Mirror","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Everbrite dielektrische zenitspiegel 90 graden van 1,25 inch met 99 procent reflectie.","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":107760,"url":"https:\/\/www.telescoop.nl\/en\/televue-zenitspiegel-90-125\/","url_meta":{"origin":25659,"position":1},"title":"TeleVue Zenith Mirror 90\u00b0 1.25\" - Diagonal Mirror","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Klassieke TeleVue zenitspiegel 90 graden van 1,25 inch met 96 procent reflectie.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Zenitspiegel, 90\u00b0, 1,25\" 90 graden zenitspiegel\/diagonaal met 1,25 inch telescoopaansluiting, 1,25 inch oculairaansluiting en klemring in zwarte aluminium behuizing","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-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-Zenitspiegel-90d-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-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-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":25659,"position":2},"title":"TeleVue Everbrite 60\u00b0 1.25\" - 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":25663,"url":"https:\/\/www.telescoop.nl\/en\/omegon-carbonline-zenitspiegel-90-125-inch-99-dielektrisch\/","url_meta":{"origin":25659,"position":3},"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":107666,"url":"https:\/\/www.telescoop.nl\/en\/televue-everbrite-90-2-zenitspiegel\/","url_meta":{"origin":25659,"position":4},"title":"TeleVue Everbrite 90\u00b0 2\" - 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":25687,"url":"https:\/\/www.telescoop.nl\/en\/omegon-zenitspiegel-90-2-inch-99-dielektrisch\/","url_meta":{"origin":25659,"position":5},"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":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/25659","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=25659"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/25662"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=25659"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=25659"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=25659"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=25659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}