{"id":25233,"date":"2025-08-07T17:04:56","date_gmt":"2025-08-07T15:04:56","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=25233"},"modified":"2026-03-03T20:25:23","modified_gmt":"2026-03-03T19:25:23","slug":"omegon-pro-h-beta-filter-2-inch","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-h-beta-filter-2-inch\/","title":{"rendered":"Omegon Pro H-Beta Filter 2 inch"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Omegon Pro H-Beta Filter 2<\/strong> inch is a specialized filter for deep-sky observers who focus on difficult-to-observe nebulae. The filter lets through only light with a wavelength around 486 nanometers - the so-called H-beta emission line of hydrogen. This type of light is emitted by specific nebulae that are virtually invisible to the naked eye.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Due to its extremely narrow transmission area, the filter blocks virtually all other forms of light, including starlight, moonlight and artificial lighting. This makes it possible to see, for example, the California Nebula (NGC 1499), Horsehead Nebula (IC 434) or Simeis 147 - objects that are barely noticeable without this filter even under dark skies.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This 2\u2033 version is intended for use with wide-angle eyepieces or in photographic systems with 2\u2033 filter holders. Thanks to the high quality optical glass and multiple coating, the filter offers maximum transmission within the desired band, with minimal reflection or stray light.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Advantages<\/strong><br>\u2713 Isolates H-beta light around 486 nm<br>\u2713 Indispensable for observation of rare nebulae<br>\u2713 Blocks practically all other light - for maximum contrast<br>\u2713 2\u2033 mount - compatible with large eyepieces and filter wheels<br>\u2713 Suitable for telescopes from 200 mm aperture upwards<\/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> H-beta narrowband filter<\/li>\n\n\n\n<li><strong>Connection:<\/strong> 2 inches (50.8 mm)<\/li>\n\n\n\n<li><strong>Mounting:<\/strong> Black anodized aluminum, fine threads<\/li>\n\n\n\n<li><strong>Coating:<\/strong> Multiple anti-reflective<\/li>\n\n\n\n<li><strong>Transmission band:<\/strong> Center at 486 nm (H-beta)<\/li>\n\n\n\n<li><strong>Application:<\/strong> Visual deep-sky observation of H-beta nebulae<\/li>\n\n\n\n<li><strong>Not suitable for:<\/strong> General use or photography<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Application<\/strong><br>The Omegon Pro H-Beta Filter 2\u2033 is ideal for advanced observers with a large telescope (200 mm or more) looking for the finest and most subtle nebular structures in the sky. This is a filter for enthusiasts with experience, dark skies and patience - but the reward is discovering nebulae that remain invisible to others.<\/p>","protected":false},"excerpt":{"rendered":"<p data-start=\"285\" data-end=\"683\">\u00a0<\/p>\n<p data-start=\"112\" data-end=\"283\">Omegon Pro H-Beta Filter 2\u2033 - extreme narrowband filter that makes rare nebulae visible through the H-beta emission line, perfect for larger eyepieces.<\/p>","protected":false},"featured_media":25190,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[56,587,3137,588],"product_tag":[],"class_list":["post-25233","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescoop-accessoires","product_cat-camera-accessoires","product_cat-deep-sky-filters","product_cat-filters","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":25230,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-h-beta-filter-125\/","url_meta":{"origin":25233,"position":0},"title":"Omegon Pro H-Beta Filter 1.25\u2033","author":"","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Pro H-Beta Filter 1.25\" - reveals extremely faint nebular structures by allowing only hydrogen-beta light through.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Pro H-Beta Filter 1,25\"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-H-Beta-filter-1-25-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-H-Beta-filter-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-H-Beta-filter-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-H-Beta-filter-1-25-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-H-Beta-filter-1-25-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-H-Beta-filter-1-25-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25011,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-cls-lichtvervuilingsfilter-2-inch\/","url_meta":{"origin":25233,"position":1},"title":"Omegon Pro CLS Light pollution filter 2 inch","author":"","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Pro CLS Lichtvervuilingsfilter 2 inch voor heldere deep-sky waarnemingen onder een vervuilde hemel, in full-size 2\" formaat.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Pro CLS Lichtvervuilingsfilter 2 inch","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-CLS-filter-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-CLS-filter-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-CLS-filter-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-CLS-filter-2-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-CLS-filter-2-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-CLS-filter-2-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25023,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-uhc-nevelfilter-125\/","url_meta":{"origin":25233,"position":2},"title":"Omegon Pro UHC Filter 1.25 inches","author":"","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Pro UHC Nebula Filter 1.25\" - dramatically increases contrast in emission nebulae, even under moderate to strong light pollution.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Pro UHC Nevel\u00adfilter 1,25\"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-1-25-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-1-25-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-1-25-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-1-25-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25035,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-filters-pro-2-inch-uhc-filter\/","url_meta":{"origin":25233,"position":3},"title":"Omegon Filters Pro 2 inch UHC filter","author":"","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Pro UHC Nebula Filter 2 inch increases the contrast of emission nebulae for larger eyepieces or photography under light pollution.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Filters Pro 2 inch UHC filter","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-2-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-2-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-UHC-filter-2-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/25233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=25233"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/25190"}],"wp:attachment":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=25233"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=25233"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=25233"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=25233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}