{"id":30656,"date":"2025-10-08T22:34:17","date_gmt":"2025-10-08T20:34:17","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=30656"},"modified":"2026-08-23T15:12:15","modified_gmt":"2026-08-23T13:12:15","slug":"bresser-extension-25-mm-2-5-inch-hexafoc-m68","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/bresser-verlengstuk-25-mm-2-5-inch-hexafoc-m68\/","title":{"rendered":"Bresser Extension 25 mm 2.5\u2033 Hexafoc M68"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>Bresser Extension Tube 25 mm 2.5\u2033 Hexafoc M68: the right distance for a sharp image<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The 25 mm (1 inch) Bresser extension tube extends the optical path between your focuser and your eyepiece or camera. This version features M68 threads on both sides and therefore fits directly onto the 2.5-inch Hexafoc focuser of Bresser telescopes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Without the correct distance, you simply cannot achieve focus: the focuser reaches the end of its travel before the image is sharp. This extension tube solves that. The aluminum is rigid and does not tilt, which is important for long focal length photography.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Bresser-Verlengstuk-25mm-2-5-Hexafoc.jpg\" alt=\"Bresser extension tube 25 mm M68 for Hexafoc\" title=\"\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Features<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>Optical length of 25 mm (1 inch)<\/li><li>Rigid aluminum, no camera or eyepiece tilt<\/li><li>Resolves focus problems with eyepieces and cameras<\/li><li>Also usable as a spacer ring for the correct backfocus<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Compatibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For the Bresser 2.5-inch Hexafoc focuser and other M68 systems. Combine multiple rings for greater distances.<\/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>Optical length<\/strong><\/td><td>25 mm (1 inch)<\/td><\/tr><tr><td><strong>Connection<\/strong><\/td><td>M68 thread on both sides<\/td><\/tr><tr><td><strong>Material<\/strong><\/td><td>Aluminum<\/td><\/tr><tr><td><strong>System<\/strong><\/td><td>Hexafoc 2.5 inch \/ M68<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You can find more accessories for this merk at the <a href=\"\/en\/brands\/bresser\/\">Bresser 1TP5 Page<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Bresser 25 mm extension tube with M68 thread on both sides, for the 2.5-inch Hexafoc focuser. Rigid aluminum, can also be used as a backfocus ring.<\/p>","protected":false},"featured_media":30658,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[128],"product_cat":[56,499],"product_tag":[],"class_list":["post-30656","product","type-product","status-publish","has-post-thumbnail","product_brand-bresser","product_cat-telescoop-accessoires","product_cat-adapters","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":32457,"url":"https:\/\/www.telescoop.nl\/en\/bresser-verlengstuk-hexafoc-37-5mm-2-5-inch\/","url_meta":{"origin":30656,"position":0},"title":"Bresser extension Hexafoc 37.5mm 2.5 inch","author":"","date":"02-11-2025","format":false,"excerpt":"Bresser verlengstuk 37,5 mm met M68-schroefdraad voor de 2,5 inch Hexafoc focuser. Stijf aluminium voor visueel gebruik en astrofotografie.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":32467,"url":"https:\/\/www.telescoop.nl\/en\/bresser-verlengstuk-35mm-2-inch\/","url_meta":{"origin":30656,"position":1},"title":"Bresser extension piece 35mm 2 inch","author":"","date":"02-11-2025","format":false,"excerpt":"Bresser verlenghuls 35 mm voor 2 inch focusers: lost focusproblemen op bij oculairs, binoviewers en camera's. 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Extension Tube","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Imaging System verlengstuk van 1 mm voor het exact instellen van de werkafstand.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Imaging System verlengstuk, 1mm zwarte 1 mm afstandsring\/verlengring voor het TeleVue Imaging System op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Imaging-System-verlengstuk-1mm.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Imaging-System-verlengstuk-1mm.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Imaging-System-verlengstuk-1mm.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Imaging-System-verlengstuk-1mm.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/30656","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=30656"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/30658"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=30656"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=30656"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=30656"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=30656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}