{"id":90693,"date":"2025-11-30T16:58:35","date_gmt":"2025-11-30T15:58:35","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=90693"},"modified":"2026-07-20T00:20:35","modified_gmt":"2026-07-19T22:20:35","slug":"skywatcher-oiii-1-filters-25","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/skywatcher-oiii-1-filters-25\/","title":{"rendered":"Sky-Watcher 1.25 inch O-III Filter"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>Sky-Watcher 1,25 inch O-III Filter: het specialistenfilter voor planetaire nevels<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Het O-III filter laat uitsluitend het licht van tweevoudig geioniseerde zuurstof door (496 en 501 nm), precies de lijnen waarin planetaire nevels en supernovaresten stralen. Al het overige licht wordt geblokkeerd: de achtergrond wordt diepzwart en de nevel springt eruit.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/Skywatcher-OIII-1-Filters-25-2.jpg\" alt=\"Skywatcher OIII 1 O-III 1.25-inch line filter in black aluminum mount with blue-green glass.\" title=\"\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/Skywatcher-OIII-1-Filters-25-1.jpg\" alt=\"Skywatcher OIII 1 transmission curve graph showing transmittance at 496 and 501 nm and suppressed background light.\" title=\"\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">De Ringnevel, Halternevel en vooral de Sluiernevel tonen met O-III detail dat zonder filter onbereikbaar is. Het filter komt het best tot zijn recht op telescopen vanaf circa 150 tot 200 mm opening; op kleine openingen wordt het beeld te donker.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Features<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>Lijnfilter: alleen 496 en 501 nm doorlaat<\/li>\n\n\n<li>Maximaal contrast op planetaire nevels en supernovaresten<\/li>\n\n\n<li>Meervoudig gecoat, aluminium vatting<\/li>\n\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Compatibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Schroeft in de filterdraad van 1,25 inch oculairs en accessoires. Visueel en fotografisch inzetbaar.<\/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>Type<\/strong><\/td><td>O-III lijnfilter<\/td><\/tr><tr><td><strong>Mount<\/strong><\/td><td>1.25 inches<\/td><\/tr><tr><td><strong>Steeping material<\/strong><\/td><td>Aluminum<\/td><\/tr><tr><td><strong>Use<\/strong><\/td><td>Visual and photographic<\/td><\/tr><tr><td><strong>Centrale golflengten<\/strong><\/td><td>496 en 501 nm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The disassembly of <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/sky-watcher\/\">Sky-Watcher<\/a> is a base that will last you for years. Unsure which mount is best for your telescope and your goals? Contact us, we'd be happy to help you decide.<\/p>","protected":false},"excerpt":{"rendered":"<p>O-III lijnfilter in 1,25 inch: laat alleen de zuurstoflijnen op 496 en 501 nm door, voor maximaal contrast op planetaire nevels en supernovaresten zoals de Sluiernevel.<\/p>","protected":false},"featured_media":98140,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[542],"product_cat":[3138,469,588,56],"product_tag":[],"class_list":["post-90693","product","type-product","status-publish","has-post-thumbnail","product_brand-sky-watcher","product_cat-imaging-filters-smalband-en-lrgb","product_cat-astro-fotografie","product_cat-filters","product_cat-telescoop-accessoires","product_shipping_class-licht","first","outofstock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"outofstock","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":90696,"url":"https:\/\/www.telescoop.nl\/en\/sky-watcher-2-inch-o-iii-filter\/","url_meta":{"origin":90693,"position":0},"title":"Sky-Watcher 2\" O-III Filter","author":"","date":"30-11-2025","format":false,"excerpt":"O-III lijnfilter in 2 inch: alleen de zuurstoflijnen op 496 en 501 nm, voor maximaal nevelcontrast in widefield-oculairs en het 2 inch lichtpad.","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\/11\/Skywatcher-Filters-OIII-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":25065,"url":"https:\/\/www.telescoop.nl\/en\/omegon-oiii-nevelfilter-125\/","url_meta":{"origin":90693,"position":1},"title":"Omegon OIII Nebula Filter 1.25 inch","author":"","date":"07-08-2025","format":false,"excerpt":"OIII narrowband filter that only lets through the light of doubly ionized oxygen. Shows filaments in planetary nebulae and supernova remnants from about 150 mm aperture.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon OIII Nevel\u00adfilter 1,25\"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-1-25-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-1-25-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-1-25-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-1-25-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":32336,"url":"https:\/\/www.telescoop.nl\/en\/televue-bandmate-type-2-oiii-125-lijnfilter\/","url_meta":{"origin":90693,"position":2},"title":"TeleVue Bandmate Type 2 OIII 1.25\" - Line Filter","author":"Abdullah Ibrar","date":"02-11-2025","format":false,"excerpt":"Bandmate Type 2 1.25-inch OIII filter for maximum contrast on planetary nebulae.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Filters Filter OIII Bandmate Type 2 1,25\" zwart 1,25 inch OIII-filter met groene glaslaag en TeleVue Bandmate Type 2 opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/TeleVue-Filters-Filter-OIII-Bandmate-Type-2-1-25-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/TeleVue-Filters-Filter-OIII-Bandmate-Type-2-1-25-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/TeleVue-Filters-Filter-OIII-Bandmate-Type-2-1-25-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/TeleVue-Filters-Filter-OIII-Bandmate-Type-2-1-25-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":25077,"url":"https:\/\/www.telescoop.nl\/en\/omegon-oiii-nevelfilter-2-inch\/","url_meta":{"origin":90693,"position":3},"title":"Omegon OIII nebula filter 2 inch","author":"","date":"07-08-2025","format":false,"excerpt":"OIII narrowband filter in a 2-inch mount for wide-field eyepieces. Makes the background very dark and shows structure in extended nebulae and supernova remnants.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon OIII Nevel\u00adfilter 2 inch","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-2-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-2-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Filters-OIII-filter-2-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":32642,"url":"https:\/\/www.telescoop.nl\/en\/ioptron-oiii-1-25-inch-filters\/","url_meta":{"origin":90693,"position":4},"title":"iOptron OIII 1.25\" Filters","author":"","date":"06-11-2025","format":false,"excerpt":"iOptron OIII lijnfilter 1,25\" met 7 nm halfwaardebreedte rond 496 en 501 nm, in aluminium vatting, voor nevelfotografie met monochrome camera's.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7415,"url":"https:\/\/www.telescoop.nl\/en\/vespera-dual-band-filter\/","url_meta":{"origin":90693,"position":5},"title":"Vaonis Vespera Dual Band Filter","author":"Info telescoop","date":"12-02-2025","format":false,"excerpt":"Vaonis Vespera dual band filter: smalbandfilter dat alleen H-alfa en O-III doorlaat voor contrastrijke nevelfotografie, ook onder lichtvervuilde hemel.","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\/02\/DBF2.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/DBF2.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/DBF2.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/DBF2.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/DBF2.png?resize=1050%2C600&ssl=1 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/90693","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=90693"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/98140"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=90693"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=90693"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=90693"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=90693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}