{"id":112879,"date":"2026-10-09T16:52:41","date_gmt":"2026-10-09T14:52:41","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=112879"},"modified":"2026-10-09T20:31:49","modified_gmt":"2026-10-09T18:31:49","slug":"adjustment-screws-for-the-viewfinder-of-an-8-inch-sct-f-10-3-screws-bobs-knobs","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/afstelschroeven-voor-de-vangspiegel-van-een-8-inch-sct-f-10-3-schroeven-bobs-knobs\/","title":{"rendered":"Adjusting screws for the viewfinder of an 8 inch SCT f\/10, 3 screws | Bob\u2019s Knobs"},"content":{"rendered":"<p class=\"wp-block-paragraph\">A small screwdriver on the front of the tube, at night, with your nose almost on the corrector plate: that\u2019s not how you align a Schmidt-Cassegrain telescope. These adjustment screws for an 8-inch SCT from Bob\u2019s Knobs are plastic buttons that replace the original screws on the secondary mirror. You just turn them with your fingers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The set fits on 8 inch <a href=\"https:\/\/www.telescoop.nl\/en\/telescopes\/catadioptric-telescopes\/schmidt-cassegrain-telescopes\/\">Schmidt-Cassegrain telescopes<\/a> with f\/10, the secondary holder has three screws. Before you measure, count how many screws you see in the center of the corrector plate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Replace them one by one; then the mirror will remain in place. Then set the collimation to a bright star at high magnification. If the telescope is often set up, then a <a href=\"https:\/\/www.telescoop.nl\/en\/protective-case-for-8-inch-schmidt-cassegrain-tg-08-telescope\/\">Protective case for an 8 inch SCT<\/a> dust and dirt outside.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you see six screws, take the <a href=\"https:\/\/www.telescoop.nl\/en\/afstelschroeven-voor-de-vangspiegel-van-een-8-inch-sct-f10-6-schroeven-bobs-knobs\/\">set for six screws<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Bob\u2019s Knobs car keys for 8 inch SCTs f\/10 with three screws on the secondary holder. Aligning by hand.<\/p>","protected":false},"featured_media":112878,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1559],"product_cat":[56,3091],"product_tag":[],"class_list":["post-112879","product","type-product","status-publish","has-post-thumbnail","product_brand-bobs-knobs","product_cat-telescoop-accessoires","product_cat-telescoop-onderdelen","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":111636,"url":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/","url_meta":{"origin":112879,"position":0},"title":"ZWO Seestar S50 Pro","author":"Info telescoop","date":"25-08-2026","format":false,"excerpt":"The ZWO Seestar S50 Pro is the successor to the Seestar S50: 50 mm quadruplet APO (260 mm, f\/5.2), two 8.3 MP 4K sensors, a 63-degree wide-angle camera for the Milky Way up to 8K, three built-in filters, a 10,000 mAh battery (up to 9 hours), and 128 GB of storage. Four capture modes for...","rel":"","context":"With 5 comments","block_context":{"text":"With 5 comments","link":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/#comments"},"img":{"alt_text":"ZWO Seestar S50 Pro hero","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/112879","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=112879"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/112878"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=112879"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=112879"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=112879"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=112879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}