{"id":14819,"date":"2025-06-23T20:25:57","date_gmt":"2025-06-23T18:25:57","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=14819"},"modified":"2026-08-25T15:09:38","modified_gmt":"2026-08-25T13:09:38","slug":"zwo-filters-duo-band-1-25","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/zwo-filters-duo-band-1-25\/","title":{"rendered":"ZWO Filters Duo-Band 1.25"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>ZWO Duo-Band filter 1.25 inch: photographing nebulae despite light pollution<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Do you want to photograph emission nebulae with your color camera, but is light pollution getting in the way? This dual-band filter transmits only the two most important emission lines: H-alpha from hydrogen (656 nm) and OIII from oxygen (around 500 nm). Stray light from street lighting and moonlight is blocked, allowing nebulae to land on your sensor with much higher contrast.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Het filter is afgestemd op ZWO ASI kleurencamera&#8217;s zoals de ASI533MC en ASI2600MC en werkt zonder complexe opstelling: filter monteren en fotograferen. Daarmee is dit een van de populairste upgrades voor zowel beginners als gevorderden met een kleurencamera.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What you photograph with it<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>Emission nebulae like the Orion Nebula and the Veil Nebula<\/li>\n\n\n<li>Planetary nebulae with rich details<\/li>\n\n\n<li>Supernova remnants<\/li>\n\n\n<li>Deep-sky objects from a light-polluted area<\/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 alle 1,25 inch focusers, filterhouders en filterwielen. Bedoeld voor kleurencamera&#8217;s (ZWO ASI MC-serie); visueel gebruik is mogelijk, maar het filter is primair ontworpen voor fotografie. Zoek je de grotere maat voor full-frame opstellingen of de Seestar S50? Kies dan de Duo-Band 2 inch.<\/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>dual-band narrowband filter (UHC-type)<\/td><\/tr><tr><td><strong>Format<\/strong><\/td><td>1.25 inches (31.7 mm)<\/td><\/tr><tr><td><strong>Doorlating OIII<\/strong><\/td><td>greater than 90% at 486 to 501 nm, bandwidth 35 nm<\/td><\/tr><tr><td><strong>H-alpha throughput<\/strong><\/td><td>greater than 80% at 656.3 nm, bandwidth 15 nm<\/td><\/tr><tr><td><strong>Mount<\/strong><\/td><td>aluminum<\/td><\/tr><tr><td><strong>Use<\/strong><\/td><td>photographic, visually possible<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A filter from the filter series of <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/zwo\/\">ZWO<\/a>: de eenvoudigste stap naar contrastrijke nevelfoto&#8217;s met een kleurencamera.<\/p>","protected":false},"excerpt":{"rendered":"<p>Duo-bandfilter 1,25 inch voor kleurencamera&#8217;s: laat H-alfa en OIII door en blokkeert lichtvervuiling. De populairste filterupgrade voor deep-sky fotografie met een ZWO ASI kleurencamera.<\/p>","protected":false},"featured_media":20378,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[123],"product_cat":[56],"product_tag":[],"class_list":["post-14819","product","type-product","status-publish","has-post-thumbnail","product_brand-zwo","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":14825,"url":"https:\/\/www.telescoop.nl\/en\/zwo-filters-duo-band-2-inch\/","url_meta":{"origin":14819,"position":0},"title":"ZWO Filters Duo-Band 2 inch","author":"","date":"23-06-2025","format":false,"excerpt":"Dual-band filter 2 inch for color cameras: H-alpha and OIII in one filter, ideal for light pollution. Also suitable for the Seestar S50 in combination with the M62 to M48 adapter.","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-2-.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-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-Band-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-Band-2-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-Band-2-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Duo-Band-2-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":28718,"url":"https:\/\/www.telescoop.nl\/en\/optolong-filters-l-enhance-1-25-inch\/","url_meta":{"origin":14819,"position":1},"title":"Optolong L-eNhance filter 1.25\u2033","author":"","date":"19-09-2025","format":false,"excerpt":"Optolong L-eNhance 1.25 inch: Tri-band nebula filter for color cameras. 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