{"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":"2026-03-13T10:17:59","modified_gmt":"2026-03-13T09:17:59","slug":"bresser-extension-25-mm-2-5-inch-hexafoc-m68","status":"publish","type":"product","link":"https:\/\/staging.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":"<p class=\"wp-block-paragraph\">Bresser Extension 25 mm 2.5\u2033 Hexafoc M68 is a precision ring that ensures the correct distance between your eyepiece or camera and the focuser. This extension sleeve is used when a telescope cannot focus because the optical distance is too short, or when the correct backfocus needs to be achieved in astrophotography.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The adapter has on both sides <strong>M68 thread<\/strong>, which makes it directly compatible with the <strong>Hexafoc 2.5\u2033 focuser<\/strong> of Bresser telescopes. The robust aluminum design ensures a stable connection without tilt, crucial for photography with long focal lengths.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In addition to being used as an extender, the ring can also serve as a <strong>fine adjustment ring<\/strong>, for example in cameras or filter wheels where the exact sensor distance determines image sharpness. Thanks to its precise finish, the sleeve fits seamlessly with other M68 components.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Application<\/strong><br>The Bresser Extension 25mm 2.5\u2033 Hexafoc M68 is ideal for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Achieving the correct focusing distance with cameras or eyepieces<\/li>\n\n\n\n<li>Correct backfocus in astrophotography<\/li>\n\n\n\n<li>Stability between focuser, filter wheel and camera<\/li>\n\n\n\n<li>Fine-tuning the optical distance in Hexafoc systems<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Indispensable for astrophotographers who work with fixed adapters and want to maintain a precisely corrected optical path.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Specifications<\/strong><br>Type: Adapter \/ extension piece<br>Design: Extension Ring<br>Optical length: 25 mm<br>Telescope side connection: M68<br>Camera\/accessory side connection: M68<br>Material: Aluminum<br>Diameter: 70 mm<br>Length: 30 mm<br>Weight: lightweight construction<br>Compatibility: Bresser Hexafoc 2.5\u2033 focuser<\/p>","protected":false},"excerpt":{"rendered":"<p data-start=\"58\" data-end=\"284\">Bresser Extension 25 mm 2.5\u2033 Hexafoc M68 comes with M68 thread on both sides - aluminum extension ring for setting the correct sensor distance in eyepieces and astrophotography.<\/p>\n<p data-start=\"286\" data-end=\"639\">\u00a0<\/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":[],"_links":{"self":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/30656","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=30656"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/30658"}],"wp:attachment":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=30656"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=30656"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=30656"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=30656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}