{"id":15359,"date":"2025-07-06T19:36:47","date_gmt":"2025-07-06T17:36:47","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=15359"},"modified":"2026-03-03T20:25:56","modified_gmt":"2026-03-03T19:25:56","slug":"zwo-h-alpha-sii-oiii-filter-set-36-mm-loose-filters","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/zwo-h-alpha-sii-oiii-filterset-36-mm-losse-filters\/","title":{"rendered":"ZWO H-Alpha SII OIII filter set 36 mm separate filters"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>ZWO H-Alpha SII OIII filter set 36 mm separate filters<\/strong> contains three narrowband interference filters (H-Alpha 656 nm, S II 672 nm and O III 501 nm) that suppress light pollution and capture faint nebulae in contrast. Thanks to the bandwidth of 7 nm, you precisely exploit the emission lines of hydrogen, sulfur and oxygen in H II regions, supernova remnants and planetary nebulae. These filters are homofocused with ZWO LRGB sets, so you switch without refocusing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key benefits<\/strong><br>\u2713 Narrow-band H-Alpha, S II and O III filters for maximum contrast enhancement<br>\u2713 7 nm half-value bandwidth minimizes ambient light without signal loss<br>\u2713 Homofocal design matches ZWO LRGB and color filters; no refocusing<br>\u2713 Loose 36 mm filters for any standard filter wheel<br>\u2713 Aluminum housing guarantees sturdy, reflection-free mounting<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Practical application<\/strong><br>Combine with a monochrome ZWO ASI camera and a filter wheel for automatic changes. Capture delicate nebular structures in Orion, Veil and Ring Nebula with exceptional detail and contrast, even under urban skies.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Technical specifications<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Format: 36 mm loose filters<\/li>\n\n\n\n<li>Filters: H-Alpha 656 nm, S II 672 nm, O III 501 nm<\/li>\n\n\n\n<li>Bandwidth (half-value): 7 nm<\/li>\n\n\n\n<li>Transmission: 80 %<\/li>\n\n\n\n<li>Glass thickness: 2 mm<\/li>\n\n\n\n<li>Housing: aluminum<\/li>\n\n\n\n<li>Application: narrowband astrophotography (photographic)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p data-start=\"1671\" data-end=\"1741\">\u00a0<\/p>\n<p data-start=\"1492\" data-end=\"1669\">ZWO H-Alpha SII OIII filter set 36 mm separate filters for high-contrast narrowband astrophotography with 7 nm bandwidth, homofocal and reflection-free.<\/p>","protected":false},"featured_media":21114,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[123],"product_cat":[56,3137,588,3138],"product_tag":[],"class_list":["post-15359","product","type-product","status-publish","has-post-thumbnail","product_brand-zwo","product_cat-telescoop-accessoires","product_cat-deep-sky-filters","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":15356,"url":"https:\/\/staging.telescoop.nl\/en\/zwo-h-alpha-sii-oiii-filterset-31-mm-losse-filters\/","url_meta":{"origin":15359,"position":0},"title":"ZWO H-Alpha SII OIII filter set 31 mm loose filters","author":"","date":"06-07-2025","format":false,"excerpt":"\u00a0 ZWO H-Alpha SII OIII filter set 31 mm separate filters for high-contrast narrowband astrophotography with 7 nm bandwidth.","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\/staging.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\/staging.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\/staging.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\/staging.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\/staging.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\/staging.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:\/\/staging.telescoop.nl\/en\/zwo-lijnfilterset-2-inch\/","url_meta":{"origin":15359,"position":1},"title":"ZWO Line Filter Set 2 inch","author":"","date":"06-07-2025","format":false,"excerpt":"\u00a0 ZWO line filter set 2 inch for narrowband astrophotography with H-Alpha, S II, O III. 7 nm bandwidth, homofocal and in convenient storage box.","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\/staging.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\/staging.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\/staging.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\/staging.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\/staging.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\/staging.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Lijnfilterset-H-alpha-SII-OIII-2-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":14831,"url":"https:\/\/staging.telescoop.nl\/en\/zwo-filters-filter-set-h-alpha-sii-oiii-125\/","url_meta":{"origin":15359,"position":2},"title":"ZWO Filters Filter-Set H-alpha, SII, OIII 1.25\u2033","author":"","date":"23-06-2025","format":false,"excerpt":"De ZWO Filters Filter-Set H-alpha, SII, OIII 1,25\" is perfect voor astrofotografie van zwakke nevels. Ontworpen voor gebruik met mono-camera\u2019s en filterwielen, met uitstekende lichtvervuilingsonderdrukking.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.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\/staging.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\/staging.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\/staging.telescoop.nl\/wp-content\/uploads\/2025\/06\/ZWO-Filters-Filter-Set-H-alpha-SII-OIII-1-25-.jpg?resize=700%2C400&ssl=1 2x, 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36mm","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-3nm-36mm.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-SHO-3nm-36mm.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-3nm-36mm.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-3nm-36mm.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-3nm-36mm.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/09\/Optolong-Filters-SHO-3nm-36mm.jpg?resize=1400%2C800&ssl=1 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