{"id":25239,"date":"2025-08-07T17:09:55","date_gmt":"2025-08-07T15:09:55","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=25239"},"modified":"2026-03-03T20:22:52","modified_gmt":"2026-03-03T19:22:52","slug":"omegon-pro-sii-ccd-filter-125","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-sii-ccd-filter-125\/","title":{"rendered":"Omegon Pro SII CCD Filter 1.25\u2033"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Omegon Pro SII CCD Filter 1.25\u2033<\/strong> is a narrow-band filter that lets through only light with a wavelength of about 672 nanometers - the emission line of ionized sulfur (SII). This type of filter is indispensable for astrophotographers working with monochrome CCD or CMOS cameras who want to capture the full Hubble palette (SII, H-alpha, OIII).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The high peak transmission within a very narrow bandwidth makes even the faintest sulfur structures visible, while effectively suppressing unwanted light - such as from street lights or moonlight. This allows you to take sharp and high-contrast images of emission nebulae such as the Rosette Nebula, the Lobster Nebula or IC 443 (Jellyfish Nebula) even from light-polluted locations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The filter comes in a durable 1.25\u2033 aluminum mount and is compatible with virtually all common filter wheels and camera adapters. The multiple coating minimizes internal reflections and maximizes the signal in the desired spectrum.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Advantages<\/strong><br>\u2713 Narrowband filter for SII emission line around 672 nm<br>\u2713 Specially designed for astrophotography with monochrome cameras<br>\u2713 Perfect for use in the Hubble palette (SII, H-alpha, OIII)<br>\u2713 Also works under light-polluted conditions<br>\u2713 Fits all 1.25\u2033 filter wheels and accessories<\/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> Narrowband SII filter for CCD\/CMOS<\/li>\n\n\n\n<li><strong>Connection:<\/strong> 1.25 inches (31.75 mm)<\/li>\n\n\n\n<li><strong>Transmission band:<\/strong> Center at 672 nm (typically 6-7 nm wide)<\/li>\n\n\n\n<li><strong>Mounting:<\/strong> Aluminum, black anodized<\/li>\n\n\n\n<li><strong>Coating:<\/strong> Multiple anti-reflective<\/li>\n\n\n\n<li><strong>Application:<\/strong> Astrophotography of emission nebulae (SII spectrum)<\/li>\n\n\n\n<li><strong>Not suitable for:<\/strong> Visual use or color cameras without narrowband sensitivity<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Application<\/strong><br>The Omegon Pro SII CCD Filter 1.25\u2033 is designed for astrophotographers working with a monochrome camera and using narrowband filters for scientific or artistic nevelop shots. Combine with an H-alpha and OIII filter for full control over color channels and structure. Suitable for deep-sky projects from both dark and urban locations.<\/p>","protected":false},"excerpt":{"rendered":"<p data-start=\"271\" data-end=\"649\">\u00a0<\/p>\n<p data-start=\"116\" data-end=\"269\">Omegon Pro SII CCD Filter 1.25\u2033 - narrowband filter for monochrome cameras, optimized for the sulfur-II spectrum (672 nm).<\/p>","protected":false},"featured_media":25217,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[56,587,588,3138],"product_tag":[],"class_list":["post-25239","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescoop-accessoires","product_cat-camera-accessoires","product_cat-filters","product_cat-imaging-filters-smalband-en-lrgb","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":25242,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-sii-ccd-filter-2-inch\/","url_meta":{"origin":25239,"position":0},"title":"Omegon Pro SII CCD Filter 2 inch","author":"","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Pro SII CCD Filter 2 inches - narrowband filter for astrophotography in the sulfur-II spectrum, optimized for full-frame monochrome cameras.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Pro SII CCD Filter 2 inch","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-SII-CCD-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-SII-CCD-filter-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-SII-CCD-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-SII-CCD-filter-2-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-SII-CCD-filter-2-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-SII-CCD-filter-2-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25236,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-sii-7nm-filter-125\/","url_meta":{"origin":25239,"position":1},"title":"Omegon Pro SII 7nm Filter 1.25\u2033","author":"","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Pro SII 7nm Filter 1,25\" \u2013 smalbandfilter voor astrofotografie in het zwavel-II spectrum, ideaal voor Hubble-palet opnamen.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Pro SII 7nm Filter 1,25\"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-OIII-7nm-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-OIII-7nm-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-OIII-7nm-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-OIII-7nm-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-OIII-7nm-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-OIII-7nm-Filter-1-25-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":28687,"url":"https:\/\/staging.telescoop.nl\/en\/optolong-cls-ccd-clip-filter-canon-eos-aps-c\/","url_meta":{"origin":25239,"position":2},"title":"Optolong CLS-CCD Clip Filter Canon EOS APS-C","author":"","date":"18-09-2025","format":false,"excerpt":"\u00a0 Optolong CLS-CCD Clip Filter Canon EOS APS-C comes with broadband coating and additional IR blocking for high-contrast deep-sky photography with modified cameras.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Optolong CLS-CCD Clip Filter Canon EOS APS-C","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-Clipfilter-voor-Canon-EOS-APS-C-CLS-CCD.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-Clipfilter-voor-Canon-EOS-APS-C-CLS-CCD.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-Clipfilter-voor-Canon-EOS-APS-C-CLS-CCD.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-Clipfilter-voor-Canon-EOS-APS-C-CLS-CCD.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-Clipfilter-voor-Canon-EOS-APS-C-CLS-CCD.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-Clipfilter-voor-Canon-EOS-APS-C-CLS-CCD.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":92622,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-veil-sii-filter-7nm-2-inch-narrowband\/","url_meta":{"origin":25239,"position":3},"title":"Omegon Pro Veil SII Filter 7nm (2 inch)","author":"","date":"06-01-2026","format":false,"excerpt":"Omegon Pro Veil SII Filters comes with SII 7nm narrowband filter in 2\" aluminum mount, high-quality glass coating and convenient protective box - ideal for photographing emission nebulae and supernova remnants under light-polluted conditions.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Filters-Pro-Veil-SII-7nm-2-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Filters-Pro-Veil-SII-7nm-2-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Filters-Pro-Veil-SII-7nm-2-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Filters-Pro-Veil-SII-7nm-2-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":92618,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-veil-sii-filter-3nm-2-inch-narrowband\/","url_meta":{"origin":25239,"position":4},"title":"Omegon Pro Veil SII Filter 3nm (2 inch)","author":"","date":"06-01-2026","format":false,"excerpt":"Omegon Pro Veil SII Filters comes with SII 3nm narrowband filter in 2\" aluminum mount, high-quality glass coating and protection box - ideal for capturing sulfur radiation in emission nebulae, supernova remnants and planetary nebulae in astrophotography.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Filters-Pro-Veil-SII-3nm-2-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Filters-Pro-Veil-SII-3nm-2-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Filters-Pro-Veil-SII-3nm-2-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Filters-Pro-Veil-SII-3nm-2-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":24939,"url":"https:\/\/staging.telescoop.nl\/en\/pro-lrgb-ccd-filterset-125-inch-omegon\/","url_meta":{"origin":25239,"position":5},"title":"Pro LRGB CCD filter set 1.25 inches - Omegon","author":"","date":"04-08-2025","format":false,"excerpt":"\u00a0 Pro LRGB CCD filter set 1.25 inches - Omegon offers maximum resolution and color depth in astrophotography with monochrome cameras. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Pro LRGB CCD-Filtersatz 1,25 Zoll \u2013 Omegon","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-LRGB-filter-1-25-1-1.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-LRGB-filter-1-25-1-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-LRGB-filter-1-25-1-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-LRGB-filter-1-25-1-1.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-LRGB-filter-1-25-1-1.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-LRGB-filter-1-25-1-1.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/25239","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=25239"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/25217"}],"wp:attachment":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=25239"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=25239"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=25239"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=25239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}