{"id":15341,"date":"2025-07-05T17:46:00","date_gmt":"2025-07-05T15:46:00","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=15341"},"modified":"2026-06-09T11:44:01","modified_gmt":"2026-06-09T09:44:01","slug":"zwo-clear-glass-filter-d25","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/zwo-helderglasfilter-d25\/","title":{"rendered":"ZWO Clear Glass Filter D25"},"content":{"rendered":"<p class=\"wp-block-paragraph\">ZWO Clear Glass Filter D25 effectively protects the sensor of your ZWO ASI camera from dust, moisture and scratches without limiting light transmission. With a transmission of 95 %, your image remains clear and contrasty, ideal for use on reflecting telescopes. For refractors, a UV\/IR-blocking filter is recommended to exclude unwanted wavelengths.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key benefits<\/strong><br>\u2713 95 % transmission for maximum brightness and contrast<br>\u2713 Protects sensor from dust, moisture and scratches during long shots<br>\u2713 Universal M42 thread fits ASI D25 cameras directly.<br>\u2713 Easy to mount as the first element in your filter wheel or directly on the camera<br>\u2713 Quickly clean with an air blower or lens cloth<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Practical application<\/strong><br>Place the clear glass filter in front of all your other filters or correctors to keep your sensor clean and dry. In mirror telescopes, this filter prevents dust and moisture from entering the optics. On refractors, keep your UV\/IR blockers and narrowband filters effective and free of dirt longer.<\/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: ASI D25 (M42 \u00d7 0.75)<\/li>\n\n\n\n<li>Filter type: Clear glass<\/li>\n\n\n\n<li>Transmission: 95 %<\/li>\n\n\n\n<li>Coating: multi-coated for minimal reflections<\/li>\n\n\n\n<li>Glass thickness: 2 mm<\/li>\n\n\n\n<li>Mounting: internal thread<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p data-start=\"1548\" data-end=\"1618\">\u00a0<\/p>\n<p data-start=\"1397\" data-end=\"1546\">ZWO Clear Glass Filter D25 for ASI cameras - 95 % transmission and reliable sensor protection without image loss.<\/p>","protected":false},"featured_media":21098,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[123],"product_cat":[588,56],"product_tag":[],"class_list":["post-15341","product","type-product","status-publish","has-post-thumbnail","product_brand-zwo","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":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":15337,"url":"https:\/\/www.telescoop.nl\/en\/zwo-helderglasfilter-d21\/","url_meta":{"origin":15341,"position":0},"title":"ZWO Clear Glass Filter D21","author":"","date":"05-07-2025","format":false,"excerpt":"\u00a0 ZWO Clear Glass Filter D21 for ASI Cameras. Protect your sensor from dust and moisture with 95 % transmission with no image loss.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO Klarglasfilter D21","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Helderglasfilter-ASI-D21.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Helderglasfilter-ASI-D21.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Helderglasfilter-ASI-D21.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Helderglasfilter-ASI-D21.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Helderglasfilter-ASI-D21.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-Helderglasfilter-ASI-D21.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":15362,"url":"https:\/\/www.telescoop.nl\/en\/zwo-ir-blocking-filter-d21\/","url_meta":{"origin":15341,"position":1},"title":"ZWO IR-blocking filter D21","author":"","date":"06-07-2025","format":false,"excerpt":"\u00a0 ZWO IR-blocking filter D21 protects your ASI camera and blocks infrared for razor-sharp, high-contrast shots. 90 % transmission, M42 loose design.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO IR-Sperrfilter D21","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D21.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D21.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D21.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D21.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D21.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D21.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":15365,"url":"https:\/\/www.telescoop.nl\/en\/zwo-ir-blocking-filter-d25\/","url_meta":{"origin":15341,"position":2},"title":"ZWO IR-blocking filter D25","author":"","date":"06-07-2025","format":false,"excerpt":"\u00a0 ZWO IR-blocking filter D25 for ASI cameras. Blocks infrared, protects sensor and provides 90 % transmission for razor-sharp, high-contrast images.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO IR-Sperrfilter D25","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D25.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D25.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D25.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D25.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D25.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Blocking-filters-IR-ASI-D25.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":15334,"url":"https:\/\/www.telescoop.nl\/en\/zwo-lrgb-filterset-1-25-inch\/","url_meta":{"origin":15341,"position":3},"title":"ZWO LRGB filter set 1.25 inches","author":"","date":"05-07-2025","format":false,"excerpt":"ZWO LRGB filterset 1.25 inch\u00a0voor ASI 1600 MM Mono. Hoge transmissie, UV\/IR-cut L-filter en parafocaal ontwerp voor perfecte kleur-deep-sky en planetaire foto\u2019s.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO LRGB Filtersatz 1,25 Zoll","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-LRGB-filterset-voor-ASI-1600-MM-Mono-1-25-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-LRGB-filterset-voor-ASI-1600-MM-Mono-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-LRGB-filterset-voor-ASI-1600-MM-Mono-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-LRGB-filterset-voor-ASI-1600-MM-Mono-1-25-.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-LRGB-filterset-voor-ASI-1600-MM-Mono-1-25-.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-LRGB-filterset-voor-ASI-1600-MM-Mono-1-25-.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":15348,"url":"https:\/\/www.telescoop.nl\/en\/zwo-lrgb-filterset-36-mm-losse-filters\/","url_meta":{"origin":15341,"position":4},"title":"ZWO LRGB filter set 36 mm separate filters","author":"","date":"06-07-2025","format":false,"excerpt":"\u00a0 ZWO LRGB filter set 36 mm separate filters for ZWO cameras. Four multi-coated interference filters, including UV\/IR-block Luminance filter, for full-resolution color channels.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO LRGB-Filterset 36 mm lose Filter","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-LRGB-Filter-36mm-unmounted.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-LRGB-Filter-36mm-unmounted.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-LRGB-Filter-36mm-unmounted.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-LRGB-Filter-36mm-unmounted.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-LRGB-Filter-36mm-unmounted.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/ZWO-Filters-LRGB-Filter-36mm-unmounted.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":8008,"url":"https:\/\/www.telescoop.nl\/en\/zwo-camera-asi-294-mc-pro-color\/","url_meta":{"origin":15341,"position":5},"title":"ZWO Camera ASI 294 MC Pro Color","author":"","date":"12-02-2025","format":false,"excerpt":"Met de ZWO CAMERA ASI 294MC Pro Color haal je een krachtige en veelzijdige kleurencamera in huis die geschikt is voor vrijwel alle deep-sky toepassingen. \ud83d\udcf7\u2728","rel":"","context":"With 1 comment","block_context":{"text":"With 1 comment","link":"https:\/\/www.telescoop.nl\/en\/zwo-camera-asi-294-mc-pro-color\/#comments"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/ZWO-Camera-ASI-294-MC-Pro-Color.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/ZWO-Camera-ASI-294-MC-Pro-Color.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/ZWO-Camera-ASI-294-MC-Pro-Color.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/ZWO-Camera-ASI-294-MC-Pro-Color.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/ZWO-Camera-ASI-294-MC-Pro-Color.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/ZWO-Camera-ASI-294-MC-Pro-Color.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/15341","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=15341"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/21098"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=15341"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=15341"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=15341"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=15341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}