{"id":32643,"date":"2025-11-06T14:44:05","date_gmt":"2025-11-06T13:44:05","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=32643"},"modified":"2026-07-19T20:54:21","modified_gmt":"2026-07-19T18:54:21","slug":"ioptron-1-25-inch-filters-h-alpha","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/ioptron-1-25-inch-filters-h-alpha\/","title":{"rendered":"iOptron 1.25\" Filters H-alpha"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>iOptron 1,25\" Filters H-alpha: H-alpha smalbandfilter van 7 nm<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dit smalbandfilter laat alleen het dieprode licht van de H-alpha emissielijn rond 656 nm door, de golflengte waarop waterstofnevels het felst gloeien. Structuren en zwakke uitlopers die in breedband verdrinken, komen hiermee scherp in beeld.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De halfwaardebreedte van 7 nm blokkeert vrijwel al het overige licht, inclusief lichtvervuiling en maanlicht. Daardoor is H-alpha ook vanuit de stad en bij Maan aan de hemel goed te fotograferen.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-125-Filters-H-alpha.jpg\" alt=\"iOptron 1.25\" filters title=\"\"><\/figure>\n<\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Bouwsteen van smalbandpaletten<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">H-alpha is de basis van elk smalbandpalet: als rood kanaal in HOO of als groen kanaal in de Hubble-verdeling SHO. De aluminium vatting van 1,25 inch past in gangbare filterwielen.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Included<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H-alpha filter, 1,25\" gevat<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Featured accessories<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Combineer met de OIII- en SII-filters van iOptron voor het volledige Hubble-palet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>For whom yes and for whom no<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2713 Monochroomfotografen van emissienevels, ook vanuit lichtvervuild gebied<\/li>\n\n\n\n<li>\u2717 Visuele waarnemers en kleurencamera's zonder duale bandpass: daarvoor is dit filter niet bedoeld<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Specifications<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Emission line<\/strong><\/td><td>H-alpha, 656 nm<\/td><\/tr><tr><td><strong>Half-value width<\/strong><\/td><td>7 nm<\/td><\/tr><tr><td><strong>Format<\/strong><\/td><td>1,25 inch, aluminium vatting<\/td><\/tr><tr><td><strong>Observation goals<\/strong><\/td><td>Smalbandfotografie met monochrome camera's<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You can find more mounts and accessories for this merk at the <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/ioptron\/\">iOptron merk page<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>iOptron H-alpha lijnfilter 1,25\" met 7 nm halfwaardebreedte rond 656 nm, in aluminium vatting, voor waterstofnevels met monochrome camera's.<\/p>","protected":false},"featured_media":96737,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[2790],"product_cat":[3138,469,588,56],"product_tag":[],"class_list":["post-32643","product","type-product","status-publish","has-post-thumbnail","product_brand-ioptron","product_cat-imaging-filters-smalband-en-lrgb","product_cat-astro-fotografie","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":[32642,32644],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":15356,"url":"https:\/\/www.telescoop.nl\/en\/zwo-h-alpha-sii-oiii-filterset-31-mm-losse-filters\/","url_meta":{"origin":32643,"position":0},"title":"ZWO H-Alpha SII OIII filter set 31 mm loose filters","author":"","date":"06-07-2025","format":false,"excerpt":"Smalbandset van drie losse 31 mm filters (H-alfa 656 nm, SII 672 nm, OIII 501 nm) met 7 nm bandbreedte. 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