{"id":28970,"date":"2025-09-20T19:46:19","date_gmt":"2025-09-20T17:46:19","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=28970"},"modified":"2026-03-13T11:49:06","modified_gmt":"2026-03-13T10:49:06","slug":"optolong-l-extreme-filter-1-25-inch","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/optolong-l-extreme-filter-1-25-inch\/","title":{"rendered":"Optolong L-eXtreme Filter 1.25 inch"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Optolong Filters L-eXtreme 1.25\u2033 is a high-quality narrowband filter designed specifically for astrophotography of emission nebulae with color cameras (OSC) and DSLRs. The filter allows only two major emission lines to pass through: H-alpha (656 nm) and OIII (500 nm). Interfering wavelengths from artificial light are almost completely blocked, making nebulae appear much more contrasty and bright in the photograph.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thanks to its dual transmission, this filter is ideal for cameras with a Bayer pattern because both color channels are efficiently utilized. This makes the L-eXtreme filter particularly effective for nebulae such as the Veil Nebula, the Orion Nebula or the North American Nebula. The sky background is greatly darkened, enabling impressive results even in urban areas with significant light pollution.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Compared to wider filters such as the L-eNhance, the L-eXtreme offers even higher selectivity and contrast, which is especially useful for narrowband photography under heavy light pollution or during moonlight. The filter is constructed of high-quality optical glass with multiple anti-reflection coatings and mounted in a rugged 1.25\u2033 aluminum mount.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Application<\/strong><br>This filter is ideal for astrophotographers who want to photograph emission nebulae with a color camera or DSLR, even from the city. Suitable for long exposure times and stacking. For visual use, this filter is less suitable because the extremely narrow bandwidth allows too little light to pass through for the human eye.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Specifications<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Type: Narrow-band filter (dual-band)<\/li>\n\n\n\n<li>Diameter: 1.25\u2033 mount<\/li>\n\n\n\n<li>Transmittance: H-alpha (656 nm) and OIII (500 nm)<\/li>\n\n\n\n<li>Material: Optical glass with multiple coating<\/li>\n\n\n\n<li>Mount: Aluminum<\/li>\n\n\n\n<li>Application:\n<ul class=\"wp-block-list\">\n<li>\u2713 Astrophotography of emission nebulae<\/li>\n\n\n\n<li>\u2713 Suitable for OSC cameras and DSLRs<\/li>\n\n\n\n<li>\u2713 Works in light-polluted areas<\/li>\n\n\n\n<li>\u2717 Not intended for visual use<\/li>\n<\/ul>\n<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<article class=\"w-full text-token-text-primary focus-visible:outline-2 focus-visible:outline-offset-[-4px]\" dir=\"auto\" data-testid=\"conversation-turn-35\" data-scroll-anchor=\"true\">\n<div class=\"text-base my-auto mx-auto py-[18px] px-6\">\n<div class=\"mx-auto flex flex-1 text-base gap-4 md:gap-5 lg:gap-6 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem]\">\n<div class=\"group\/conversation-turn relative flex w-full min-w-0 flex-col agent-turn @xs\/thread:px-0 @sm\/thread:px-1.5 @md\/thread:px-4\">\n<div class=\"flex-col gap-1 md:gap-3\">\n<div class=\"flex max-w-full flex-col flex-grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 whitespace-normal break-words text-start [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"28a009d2-3136-4224-8ee5-30c9a1a2ece5\" data-message-model-slug=\"gpt-4o\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\">\n<div class=\"markdown prose w-full break-words dark:prose-invert dark\">\n<p data-start=\"349\" data-end=\"786\">\u00a0<\/p>\n<p data-start=\"146\" data-end=\"347\">Optolong Filters L-eXtreme 1,25&#8243; wordt geleverd met aluminium vatting\u00a0 &#8211; krachtig filter voor nevel-astrofotografie vanuit licht vervuilde gebieden.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n","protected":false},"featured_media":28981,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1548],"product_cat":[56,587,588,3139],"product_tag":[],"class_list":["post-28970","product","type-product","status-publish","has-post-thumbnail","product_brand-optolong","product_cat-telescoop-accessoires","product_cat-camera-accessoires","product_cat-filters","product_cat-lichtvervuilingsfilters-light-pollution","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":[],"_links":{"self":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/28970","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=28970"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/28981"}],"wp:attachment":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=28970"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=28970"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=28970"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=28970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}