{"id":25260,"date":"2025-08-07T17:28:27","date_gmt":"2025-08-07T15:28:27","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=25260"},"modified":"2026-09-11T22:01:18","modified_gmt":"2026-09-11T20:01:18","slug":"omegon-solar-filter-90-mm","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-zonnefilter-90-mm\/","title":{"rendered":"Omegon Solar Filter 90 mm"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Omegon Solar Filter 90 mm<\/strong> is specially designed for telescopes with a tube diameter around 90 mm - such as many common lens telescopes (refractors) or compact Maksutov systems. Thanks to the use of certified AstroSolar film, you observe the sun without risk and with stunning clarity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The filter shows the solar surface in a neutral white image, highlighting sunspots, granulation and edge structures. The sturdy mounting via screw clamps and adjusting rings makes the filter easy to install as well as safe to use. This makes it suitable not only for individual observation, but also for use in public demonstrations and schools.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Safety first: this filter meets the international ISO 12312-2 standard for direct sun observation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Advantages<\/strong><br>\u2713 Fits telescopes with approximately 90 mm tube diameter<br>\u2713 Enables safe sun viewing with natural color reproduction<br>\u2713 Firm attachment prevents shifting<br>\u2713 Perfect for sunspots, edge structure and eclipses<br>\u2713 Certified and reusable<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Specifications<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Type:<\/strong> Solar filter for visual use<\/li>\n\n\n\n<li><strong>Suitable pipe diameter:<\/strong> \u00b190 mm<\/li>\n\n\n\n<li><strong>Filter material:<\/strong> AstroSolar Safety Film (ND 5.0)<\/li>\n\n\n\n<li><strong>Color rendering:<\/strong> Neutral white<\/li>\n\n\n\n<li><strong>Safety standard:<\/strong> ISO 12312-2 certified<\/li>\n\n\n\n<li><strong>Attachment:<\/strong> With adjusting rings and screw clamps<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Observation goals<\/strong><br>The Omegon Solar Filter 90 mm is ideal for anyone who wants to safely observe the sun with a standard refractor or compact telescope. From sunspots to eclipses, this filter is ready for any solar project.<\/p>","protected":false},"excerpt":{"rendered":"<p data-start=\"2490\" data-end=\"2830\">\u00a0<\/p>\n<p data-start=\"2344\" data-end=\"2488\">Omegon Solar Filter 90 mm - safe and high-contrast sun observation for telescopes with a tube diameter of about 90 mm.<\/p>","protected":false},"featured_media":25094,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[56,3178],"product_tag":[],"class_list":["post-25260","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescoop-accessoires","product_cat-zonnefilters","product_shipping_class-licht","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":1,"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":108160,"url":"https:\/\/www.telescoop.nl\/en\/omegon-zonnefilters-helievo\/","url_meta":{"origin":25260,"position":0},"title":"Omegon Solar Filters Multiple Sizes","author":"Info telescoop","date":"17-05-2026","format":false,"excerpt":"Met het Omegon Helievo zonnefilter bekijk je de zon 100% veilig door je eigen telescoop. De hoogwaardige ND 5.0 zonnefolie laat slechts 0,001% van het zonlicht door, zodat je zonnevlekken, granulatie en zonsverduisteringen scherp en zonder risico kunt waarnemen. Het filter klemt met drie krasvrije stelschroeven stevig op de voorkant\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Zonnefilters meerdere maten","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/05\/Omegon-Zonnefilters-Helievo-192-184-208mm-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/05\/Omegon-Zonnefilters-Helievo-192-184-208mm-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/05\/Omegon-Zonnefilters-Helievo-192-184-208mm-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/05\/Omegon-Zonnefilters-Helievo-192-184-208mm-1.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/05\/Omegon-Zonnefilters-Helievo-192-184-208mm-1.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/05\/Omegon-Zonnefilters-Helievo-192-184-208mm-1.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25251,"url":"https:\/\/www.telescoop.nl\/en\/omegon-zonnefilter-138-153-mm\/","url_meta":{"origin":25260,"position":1},"title":"Omegon Solar Filter 138-153 mm","author":"Info telescoop","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Solar Filter 138-153 mm - safe sun observation with Newton telescopes from 138 to 153 mm aperture.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Zonnefilter 138-153 mm","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-138mm-153mm.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-138mm-153mm.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-138mm-153mm.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-138mm-153mm.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-138mm-153mm.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-138mm-153mm.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25254,"url":"https:\/\/www.telescoop.nl\/en\/omegon-zonnefilter-173-193-mm\/","url_meta":{"origin":25260,"position":2},"title":"Omegon Solar Filter 173-193 mm","author":"Info telescoop","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Solar Filter 173-193 mm - safe solar observation with Newton telescopes of 173 to 193 mm outer diameter.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Zonnefilter 173-193 mm","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-173mm-193mm.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-173mm-193mm.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-173mm-193mm.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-173mm-193mm.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-173mm-193mm.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Zonnefilters-zonnefilter-173mm-193mm.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":111333,"url":"https:\/\/www.telescoop.nl\/en\/baader-assf-80-mm-astrosolar-clearwhite-zonnefilter-od-5-1\/","url_meta":{"origin":25260,"position":3},"title":"Baader ASSF 80 mm AstroSolar ClearWhite Solar Filter (OD 5.1)","author":"Info telescoop","date":"16-08-2026","format":false,"excerpt":"Ready-to-use solar filter with original Baader AstroSolar ClearWhite film (OD 5.1)\nFree aperture: 80 mm\nSuitable for tube diameters from 70 to 90 mm\nFor spotting scopes, telephoto lenses, and smaller telescopes\nSafe for visual observation and solar photography (EN ISO 12312-2:2015)","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/Baader-Sonnenfilter-AstroSolar-ClearWhite-ASSF-80mm.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/Baader-Sonnenfilter-AstroSolar-ClearWhite-ASSF-80mm.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/Baader-Sonnenfilter-AstroSolar-ClearWhite-ASSF-80mm.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/Baader-Sonnenfilter-AstroSolar-ClearWhite-ASSF-80mm.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":111339,"url":"https:\/\/www.telescoop.nl\/en\/baader-assf-100-mm-astrosolar-clearwhite-zonnefilter-od-5-1\/","url_meta":{"origin":25260,"position":4},"title":"Baader ASSF 100 mm AstroSolar ClearWhite Solar Filter (OD 5.1)","author":"Info telescoop","date":"16-08-2026","format":false,"excerpt":"Ready-to-use solar filter with original Baader AstroSolar ClearWhite film (OD 5.1)\nClear aperture: 100 mm\nSuitable for tube diameters from 90 to 110 mm\nFor spotting scopes, telephoto lenses, and smaller telescopes\nSafe for visual observation and solar photography (EN ISO 12312-2:2015)","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/Baader-Sonnenfilter-AstroSolar-ClearWhite-ASSF-100mm.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/Baader-Sonnenfilter-AstroSolar-ClearWhite-ASSF-100mm.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/Baader-Sonnenfilter-AstroSolar-ClearWhite-ASSF-100mm.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/Baader-Sonnenfilter-AstroSolar-ClearWhite-ASSF-100mm.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":104660,"url":"https:\/\/www.telescoop.nl\/en\/acuter-solarus-80-zonnetelescoop-ota\/","url_meta":{"origin":25260,"position":5},"title":"Acuter Solarus-80 Solar Telescope OTA","author":"Info telescoop","date":"17-03-2026","format":false,"excerpt":"White light solar telescope with 80mm aperture, 400mm focal length, and a permanently mounted glass solar filter (ISO 12312-2:2015). Complete with a 25x\/40x\/80x zoom eyepiece, filter wheel with six color filters, solar finder, and smartphone adapter. Observe sunspots from the first minute, no loose filters needed.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/03\/Acuter-Solarus-80-zonnetelescoop-OTA-%E2%80%93-80mm-specialist-voor-veilig-zonne-onderzoek.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/03\/Acuter-Solarus-80-zonnetelescoop-OTA-%E2%80%93-80mm-specialist-voor-veilig-zonne-onderzoek.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/03\/Acuter-Solarus-80-zonnetelescoop-OTA-%E2%80%93-80mm-specialist-voor-veilig-zonne-onderzoek.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/03\/Acuter-Solarus-80-zonnetelescoop-OTA-%E2%80%93-80mm-specialist-voor-veilig-zonne-onderzoek.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/25260","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=25260"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/25094"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=25260"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=25260"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=25260"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=25260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}