{"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":"2026-10-13T10:56:25","modified_gmt":"2026-10-13T08:56:25","slug":"omegon-pro-sii-ccd-filter-125","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-pro-sii-ccd-filter-125\/","title":{"rendered":"Omegon Pro SII CCD Filter 1.25 inch"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>Omegon Pro SII CCD Filter 1.25 inch: the third channel of the Hubble palette<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This narrowband filter exclusively transmits light around 672 nanometers, the emission line of ionized sulfur. For astrophotographers who want to capture the full Hubble palette with a monochrome camera, this is the missing channel.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-SII-CCD-filter-1-25-.jpg\" alt=\"Omegon Pro SII CCD filter 1.25 inch\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-Pro-SII-CCD-filter-1-25-1.jpg\" alt=\"Omegon Pro SII CCD filter 1.25 inch\" title=\"\"><\/figure><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Capture weak sulfur structures<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Due to the high peak transmission within a very narrow band, even the weakest sulfur structures become visible, while street lighting and moonlight are effectively suppressed. This allows you to capture high-contrast images even from light-polluted locations.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Typical goals<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">SII is shown to great advantage on emission nebulae such as the Rosette Nebula, the Crab Nebula and IC 443, the Jellyfish Nebula. Combined with H-alpha and OIII, you can build a full-color image from them.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Featured accessories<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mounted in a durable 1.25-inch aluminum cell and combinable with the Pro H-alpha and Pro OIII filters in the same size.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">For whom yes and for whom no<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u2713 Astrophotographers with a monochrome CCD or CMOS camera<\/li><li>\u2713 Who wants to complete the Hubble palette<\/li><li>\u2713 Owners of a 1.25-inch filter wheel<\/li><li>\u2717 Visual observers: SII yields virtually nothing to the eye<\/li><li>\u2717 Who doesn't have H-alpha and OIII yet: start with that<\/li><\/ul>\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>SII narrowband filter<\/td><\/tr><tr><td><strong>Mount<\/strong><\/td><td>1.25 inches<\/td><\/tr><tr><td><strong>Wavelength<\/strong><\/td><td>Around 672 nm<\/td><\/tr><tr><td><strong>Material mount<\/strong><\/td><td>Aluminum<\/td><\/tr><tr><td><strong>Observation goals<\/strong><\/td><td>Narrow-band astrophotography<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You can find more accessories for this brand at the <a href=\"\/en\/brands\/omegon\/\">Omegon brand page<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>SII narrowband filter around 672 nm for monochrome cameras. The third channel of the Hubble palette, alongside H-alpha and OIII.<\/p>","protected":false},"featured_media":25217,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[3138,469,588,3104,56],"product_tag":[],"class_list":["post-25239","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-imaging-filters-smalband-en-lrgb","product_cat-astro-fotografie","product_cat-filters","product_cat-overige-astrofotografie-accessoires","product_cat-telescoop-accessoires","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":111636,"url":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/","url_meta":{"origin":25239,"position":0},"title":"ZWO Seestar S50 Pro","author":"Info telescoop","date":"25-08-2026","format":false,"excerpt":"Smart telescope with a 50 mm wide-aperture apochromat lens and a 260 mm brandfocal length, a wide-angle camera and two 4K sensors. Staged photos of clouds and systems; a clear cloud after 10 to 20 minutes; the sun with the magnetic filter; planets remain a few pixels in size; no eyepiece. Also from the city: the duo band filter\u2026","rel":"","context":"With 5 comments","block_context":{"text":"With 5 comments","link":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/#comments"},"img":{"alt_text":"ZWO Seestar S50 Pro hero","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/25239","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=25239"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/25217"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=25239"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=25239"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=25239"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=25239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}