{"id":15356,"date":"2025-07-06T19:32:05","date_gmt":"2025-07-06T17:32:05","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=15356"},"modified":"2026-08-25T15:09:45","modified_gmt":"2026-08-25T13:09:45","slug":"zwo-h-alpha-sii-oiii-filter-set-31-mm-loose-filters","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/zwo-h-alpha-sii-oiii-filterset-31-mm-losse-filters\/","title":{"rendered":"ZWO H-Alpha SII OIII filter set 31 mm loose filters"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>ZWO H-alfa, SII en OIII filterset 31 mm: smalbandfotografie in het Hubble-palet<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Deze set van drie losse 31 mm smalbandfilters isoleert de emissielijnen van waterstof (H-alfa, 656 nm), zwavel (SII, 672 nm) en zuurstof (OIII, 501 nm). Met een halfwaardebreedte van 7 nm wordt vrijwel al het omgevingslicht onderdrukt, zodat zwakke nevelstructuren contrastrijk op de sensor landen, ook vanuit lichtvervuild gebied of bij maanlicht.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De drie kanalen combineer je in bewerkingssoftware tot het klassieke Hubble-palet (SHO). Doordat de filters homofocaal zijn met de ZWO LRGB-filters wissel je zonder opnieuw scherp te stellen: ideaal voor automatische sessies met een filterwiel.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Features<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>Three narrow-band filters with 7 nm full width at half maximum<\/li>\n\n\n<li>Suppresses light pollution and moonlight almost completely<\/li>\n\n\n<li>Parfocal with ZWO LRGB filters: no refocusing<\/li>\n\n\n<li>Losse 31 mm filters voor standaard filterwielen<\/li>\n\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Compatibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Past in filterwielen met 31 mm sleuven. Bedoeld voor monochrome ZWO ASI-camera&#8217;s; combineer met een ZWO EFW filterwiel voor automatische filterwissels.<\/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>Format<\/strong><\/td><td>31 mm, ongemonteerd (los)<\/td><\/tr><tr><td><strong>Filters<\/strong><\/td><td>H-alpha 656 nm, SII 672 nm, OIII 501 nm<\/td><\/tr><tr><td><strong>Half-value width<\/strong><\/td><td>7 nm<\/td><\/tr><tr><td><strong>Transmission<\/strong><\/td><td>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\">De 31 mm smalbandset uit de filterserie van <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/zwo\/\">ZWO<\/a>. Werk je met een grotere sensor? Kies dan de 36 mm uitvoering.<\/p>","protected":false},"excerpt":{"rendered":"<p>Smalbandset van drie losse 31 mm filters (H-alfa 656 nm, SII 672 nm, OIII 501 nm) met 7 nm bandbreedte. Voor Hubble-palet opnames met monocamera&#8217;s, ook onder stedelijke hemel.<\/p>","protected":false},"featured_media":21110,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[123],"product_cat":[3138,3137,588,56],"product_tag":[],"class_list":["post-15356","product","type-product","status-publish","has-post-thumbnail","product_brand-zwo","product_cat-imaging-filters-smalband-en-lrgb","product_cat-deep-sky-filters","product_cat-filters","product_cat-telescoop-accessoires","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":15359,"url":"https:\/\/www.telescoop.nl\/en\/zwo-h-alpha-sii-oiii-filterset-36-mm-losse-filters\/","url_meta":{"origin":15356,"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":14831,"url":"https:\/\/www.telescoop.nl\/en\/zwo-filters-filter-set-h-alpha-sii-oiii-125\/","url_meta":{"origin":15356,"position":1},"title":"ZWO Filters Filter-Set H-alpha, SII, OIII 1.25\u2033","author":"","date":"23-06-2025","format":false,"excerpt":"Small band filter set (H-alpha, SII, OIII) 1.25 inch with 7 nm bandwidth for monochrome cameras. The basis for Hubble palette recordings with maximum nebula detail, even under urban skies.","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-Filter-Set-H-alpha-SII-OIII-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-Filter-Set-H-alpha-SII-OIII-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-1-25-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-1-25-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-1-25-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":15371,"url":"https:\/\/www.telescoop.nl\/en\/zwo-lijnfilterset-2-inch\/","url_meta":{"origin":15356,"position":2},"title":"ZWO Line Filter Set 2 inch","author":"","date":"06-07-2025","format":false,"excerpt":"Set van drie 2 inch smalbandfilters (H-alfa 656 nm, SII 672 nm, OIII 500 nm) met 7 nm bandbreedte, homofocaal met alle ZWO-filters. 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Complete basis for Hubble palette photography with a monochrome camera.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Optolong Filters SHO Filter Kit 7nm 2\"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-Filter-Kit-7nm-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-Filter-Kit-7nm-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-Filter-Kit-7nm-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-Filter-Kit-7nm-2-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-Filter-Kit-7nm-2-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-Filter-Kit-7nm-2-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":29165,"url":"https:\/\/www.telescoop.nl\/en\/optolong-sho-filter-kit-1-25-inch\/","url_meta":{"origin":15356,"position":4},"title":"Optolong SHO Filter Kit 1.25 inch","author":"","date":"22-09-2025","format":false,"excerpt":"Optolong SHO filterset 1.25 inch with three narrowband filters: H-alpha 7 nm, OIII 6.5 nm, and SII 6.5 nm. 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