{"id":14831,"date":"2025-06-23T20:33:27","date_gmt":"2025-06-23T18:33:27","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=14831"},"modified":"2026-10-13T10:56:54","modified_gmt":"2026-10-13T08:56:54","slug":"zwo-filters-filter-set-h-alpha-sii-oiii-125","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/zwo-filters-filter-set-h-alpha-sii-oiii-125\/","title":{"rendered":"ZWO Filters Filter-Set H-alpha, SII, OIII 1.25\u2033"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>ZWO Filter Set H-alpha, SII, and OIII 1.25 inch: narrowband imaging with maximum nebula detail<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This narrowband filter set is your gateway to serious narrowband astrophotography with a monochrome camera. Each filter isolates a specific emission line with a bandwidth of just 7 nm, making faint nebula structures visible with high contrast and virtually eliminating light pollution. This allows you to capture detailed nebulae, even in the middle of the city or under moonlight.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What each filter does<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>H-alpha (656 nm): hydrogen nebulae and HII regions, the richest signal in the night sky<\/li>\n\n\n<li>OIII (501 nm): Planetary Nebulae and Supernova Remnants<\/li>\n\n\n<li>SII (672 nm): Z-wave emission in deep nebulae<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Together, the three channels form the classic Hubble Palette (SHO), the color combination used to create the most famous nebulae photos. Each channel is exposed separately and then combined in editing software to form a color image.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Compatibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The filters fit all 1.25-inch filter wheels, such as the ZWO EFW 8\u00d71.25-inch. They are homophotic with the ZWO LRGB filters, so switching between them can be done without having to refocus. Optimal in combination with monochrome cameras such as the ASI183MM or ASI294MM Mono.<\/p>\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>Filter type<\/strong><\/td><td>small band filter set (H-alpha, SII, OIII)<\/td><\/tr><tr><td><strong>Format<\/strong><\/td><td>1.25 inches (31.7 mm)<\/td><\/tr><tr><td><strong>Half-value width<\/strong><\/td><td>7 nm per filter<\/td><\/tr><tr><td><strong>Transmission<\/strong><\/td><td>more than 80%<\/td><\/tr><tr><td><strong>Housing<\/strong><\/td><td>aluminum<\/td><\/tr><tr><td><strong>Use<\/strong><\/td><td>photographic, with a single camera<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The complete narrowband set from the filter series <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/zwo\/\">ZWO<\/a>. Combine with a ZWO EFW filter wheel and a mono camera for a fully automatic SHO workflow.<\/p>","protected":false},"excerpt":{"rendered":"<p>Narrowband filter set (H-alpha, SII, OIII) 1.25 inch with 7 nm bandwidth for monocular cameras. The basis for Hubble-style shots with maximum nebula detail, even under urban skies.<\/p>","protected":false},"featured_media":20390,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[123],"product_cat":[56,587,588,3138],"product_tag":[],"class_list":["post-14831","product","type-product","status-publish","has-post-thumbnail","product_brand-zwo","product_cat-telescoop-accessoires","product_cat-camera-accessoires","product_cat-filters","product_cat-imaging-filters-smalband-en-lrgb","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":15359,"url":"https:\/\/www.telescoop.nl\/en\/zwo-h-alpha-sii-oiii-filterset-36-mm-losse-filters\/","url_meta":{"origin":14831,"position":0},"title":"ZWO H-Alpha SII OIII filter set 36 mm separate filters","author":"","date":"06-07-2025","format":false,"excerpt":"Narrowband set of three standalone 36 mm filters (H-alpha 656 nm, SII 672 nm, OIII 501 nm) with 7 nm bandwidth. For Hubble palette imaging with large mono sensors without vignetting.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO H-Alpha SII OIII Filtersatz 36 mm lose Filter","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-36mm-unmounted.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-36mm-unmounted.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-36mm-unmounted.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-36mm-unmounted.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-36mm-unmounted.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-36mm-unmounted.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":15356,"url":"https:\/\/www.telescoop.nl\/en\/zwo-h-alpha-sii-oiii-filterset-31-mm-losse-filters\/","url_meta":{"origin":14831,"position":1},"title":"ZWO H-Alpha SII OIII filter set 31 mm loose filters","author":"","date":"06-07-2025","format":false,"excerpt":"Narrowband set of three separate 31 mm filters (H-alpha 656 nm, SII 672 nm, OIII 501 nm) with a 7 nm bandwidth. For Hubble color composite images with monocular cameras, also under urban skies.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO H-Alpha SII OIII Filtersatz 31 mm lose Filter","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filterset-H-Alpha-SII-OIII-31mm-unmounted.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filterset-H-Alpha-SII-OIII-31mm-unmounted.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filterset-H-Alpha-SII-OIII-31mm-unmounted.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filterset-H-Alpha-SII-OIII-31mm-unmounted.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filterset-H-Alpha-SII-OIII-31mm-unmounted.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filterset-H-Alpha-SII-OIII-31mm-unmounted.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":15371,"url":"https:\/\/www.telescoop.nl\/en\/zwo-lijnfilterset-2-inch\/","url_meta":{"origin":14831,"position":2},"title":"ZWO Line Filter Set 2 inch","author":"","date":"06-07-2025","format":false,"excerpt":"Set of three 2-inch narrowband filters (H-alpha 656 nm, SII 672 nm, OIII 500 nm) with 7 nm bandwidth, parfocal with all ZWO filters. Narrowband photography up to full-frame format.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO Linienfilterset 2 Zoll \u2013 Kontrast f\u00fcr Nebel","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Lijnfilterset-H-alpha-SII-OIII-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Lijnfilterset-H-alpha-SII-OIII-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Lijnfilterset-H-alpha-SII-OIII-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Lijnfilterset-H-alpha-SII-OIII-2-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Lijnfilterset-H-alpha-SII-OIII-2-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Lijnfilterset-H-alpha-SII-OIII-2-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":112769,"url":"https:\/\/www.telescoop.nl\/en\/askar-colour-magic-filterset-h-alpha-sii-en-oiii-3-nm-2-inch-voor-het-hubble-palet\/","url_meta":{"origin":14831,"position":3},"title":"Askar Colour Magic filterset H-alpha, SII and OIII 3 nm 2 inch for the Hubble palette","author":"Info telescoop","date":"09-10-2026","format":false,"excerpt":"Three narrow-band filters of 3 nm in 2 inches: H-alpha, SII and OIII. With these, you can build color images of nebulae in the Hubble palette using a monochrome camera.","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\/10\/87817_1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/87817_1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/87817_1.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":112764,"url":"https:\/\/www.telescoop.nl\/en\/askar-colour-magic-sii-smalbandfilter-3-nm-2-inch-voor-nevelfotografie\/","url_meta":{"origin":14831,"position":4},"title":"Askar Colour Magic SII narrowband filter 3 nm 2 inch for night photography","author":"Info telescoop","date":"09-10-2026","format":false,"excerpt":"3 nm narrowband filter for the SII line of sulfur, in 2 inches. Together with H-alpha and OIII, it forms the basis for nebula images in the Hubble palette.","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\/10\/87815_1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/87815_1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/87815_1.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":14819,"url":"https:\/\/www.telescoop.nl\/en\/zwo-filters-duo-band-1-25\/","url_meta":{"origin":14831,"position":5},"title":"ZWO Filters Duo-Band 1.25","author":"","date":"23-06-2025","format":false,"excerpt":"1.25-inch dual-band filter for color cameras: transmits H-alpha and OIII while blocking light pollution. The most popular filter upgrade for deep-sky photography with a ZWO ASI color camera.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-band-1-25-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-band-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-band-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-band-1-25-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-band-1-25-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-band-1-25-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/14831","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=14831"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/20390"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=14831"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=14831"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=14831"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=14831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}