{"id":14836,"date":"2025-06-23T20:46:05","date_gmt":"2025-06-23T18:46:05","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=14836"},"modified":"2026-08-25T15:09:39","modified_gmt":"2026-08-25T13:09:39","slug":"zwo-filters-ir-pass-filter-125-inch","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/zwo-filters-ir-passeerfilter-125-inch\/","title":{"rendered":"ZWO Filters IR pass filter 1.25 inches"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>ZWO IR Pass Filter 1.25 inch: Sharper Planetary Details Through Infrared<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This IR pass filter does the opposite of a block filter: it blocks all visible light and allows only infrared light with wavelengths above 850 nm to pass through. Because infrared light is much less affected by atmospheric turbulence, images of the Moon and planets are noticeably smoother and sharper, especially in moderate seeing conditions or when a planet is low in the sky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s useful to know: in many color cameras, the Bayer color layer above 850 nm is virtually transparent. With this filter, you can effectively use a color camera as a full-resolution monochrome camera. To do this, set the white balance (WB_R and WB_B) to 50.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What you capture with it<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>Sharper images of Mars, Jupiter, Saturn, and the Moon<\/li>\n\n\n<li>Planet detail in poor seeing or low altitude<\/li>\n\n\n<li>Shooting in twilight: infrared makes the background sky darker<\/li>\n\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Compatibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Fits all 1.25-inch focusers and filter wheels. Only suitable for cameras that are sensitive to infrared, such as the ASI174MM, ASI462MM, and ASI585MM. Not suitable for visual observation.<\/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>IR pass filter<\/td><\/tr><tr><td><strong>Format<\/strong><\/td><td>1.25 inches (31.7 mm)<\/td><\/tr><tr><td><strong>Blocks<\/strong><\/td><td>visible light<\/td><\/tr><tr><td><strong>Leave by<\/strong><\/td><td>infrared above 850 nm<\/td><\/tr><tr><td><strong>Coating<\/strong><\/td><td>multi-coated<\/td><\/tr><tr><td><strong>Use<\/strong><\/td><td>photographically only<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A specialized planetary filter from the filter series of <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/zwo\/\">ZWO<\/a>. Combine with a fast planetary camera for the sharpest results.<\/p>","protected":false},"excerpt":{"rendered":"<p>IR-pass filter 1.25 inch: blocks visible light and lets infrared above 850 nm pass through. For sharper moon and planet images in turbulent skies.<\/p>","protected":false},"featured_media":20394,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[123],"product_cat":[56],"product_tag":[],"class_list":["post-14836","product","type-product","status-publish","has-post-thumbnail","product_brand-zwo","product_cat-telescoop-accessoires","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":15089,"url":"https:\/\/www.telescoop.nl\/en\/zwo-asi462mm-mono\/","url_meta":{"origin":14836,"position":0},"title":"ZWO ASI462MM Mono","author":"Info telescoop","date":"04-07-2025","format":false,"excerpt":"Ultra-sensitive monochrome planetary camera with Sony IMX462 sensor: 89% QE, exceptional infrared sensitivity, and 136 fps. The specialist in planetary, lunar, and solar photography.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO ASI462MM Mono","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Camera-ASI-462-MM-Mono.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Camera-ASI-462-MM-Mono.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Camera-ASI-462-MM-Mono.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Camera-ASI-462-MM-Mono.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Camera-ASI-462-MM-Mono.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Camera-ASI-462-MM-Mono.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":114465,"url":"https:\/\/www.telescoop.nl\/en\/touptek-g3m678c-planeetcamera-imx678\/","url_meta":{"origin":14836,"position":1},"title":"ToupTek G3M678C planetary camera IMX678","author":"Info telescoop","date":"22-10-2026","format":false,"excerpt":"Planet camera with Sony IMX678 STARVIS 2 sensor: 8.3 MP, 2.0 micrometer pixels and USB 3.0. Sensitive in the near infrared and fast enough for the moon, sun and planets.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ToupTek G3M678C planeetcamera IMX678","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/pro_G3M678C1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/pro_G3M678C1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/pro_G3M678C1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/pro_G3M678C1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":25245,"url":"https:\/\/www.telescoop.nl\/en\/omegon-blocking-filter-infraroodfilter-125\/","url_meta":{"origin":14836,"position":2},"title":"Omegon Blocking Filter Infrared Filter 1.25\u2033","author":"","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon Blocking Filter Infrared Filter 1.25\" - blocks unwanted IR radiation in photography and visual observation, for sharper images and better color correction.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon Blocking Filter Infraroodfilter 1,25\"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Blocking-filters-Infrared-band-elimination-filter.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Blocking-filters-Infrared-band-elimination-filter.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Blocking-filters-Infrared-band-elimination-filter.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Blocking-filters-Infrared-band-elimination-filter.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Blocking-filters-Infrared-band-elimination-filter.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/08\/Omegon-Blocking-filters-Infrared-band-elimination-filter.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":25248,"url":"https:\/\/www.telescoop.nl\/en\/omegon-uv-ir-cut-off-filter-125\/","url_meta":{"origin":14836,"position":3},"title":"Omegon UV\/IR Cut-Off Filter 1.25\u2033","author":"","date":"07-08-2025","format":false,"excerpt":"\u00a0 Omegon UV\/IR Cut-Off Filter 1.25\" - 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