{"id":112861,"date":"2026-10-09T16:52:34","date_gmt":"2026-10-09T14:52:34","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=112861"},"modified":"2026-10-09T20:31:38","modified_gmt":"2026-10-09T18:31:38","slug":"adjustment-screws-for-the-viewfinder-of-the-celestron-c8-f-10-with-metric-thread-bobs-knobs","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/afstelschroeven-voor-de-vangspiegel-van-de-celestron-c8-f-10-metrische-draad-bobs-knobs\/","title":{"rendered":"Adjusting screws for the viewfinder of the Celestron C8 f\/10, metric thread | Bob\u2019s Knobs"},"content":{"rendered":"

Your C8 does need collimation from time to time, and you do that with the screws in the holder of the secondary mirror. Working with a screwdriver just before the corrector plate feels never completely safe in the dark. With these Bob\u2019s Knobs for the Celestron C8 f\/10 you adjust the mirror with your fingers, with large buttons instead of small screws.<\/p>\n\n\n\n

This set has metric threaded connections, for C8 telescopes that are equipped with them. For example, if you have a Celestron C8 on AVX mounting<\/a>, First, check what thread your model has, because that varies depending on the model.<\/p>\n\n\n\n

Replace the screws one by one so that the mirror does not detach. Then re-align the star on a blurred background and rotate it just a tiny bit at a time. What you\u2019re looking for is explained in our explanation on how to adjust your telescope<\/a>.<\/p>\n\n\n\n

If your C8 has standard wire, then choose the Set for the C8 with standard wire<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

Bob\u2019s Knobs with metric thread for the viewfinder of the Celestron C8 f\/10. You focus with large knobs instead of screws.<\/p>","protected":false},"featured_media":112860,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1559],"product_cat":[56,3091],"product_tag":[],"class_list":["post-112861","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":112865,"url":"https:\/\/www.telescoop.nl\/en\/afstelschroeven-voor-de-vangspiegel-van-de-oranje-celestron-c8-c8org-bobs-knobs\/","url_meta":{"origin":112861,"position":0},"title":"Adjustment screws for the viewfinder of the orange Celestron C8 (C8org) | Bob\u2019s Knobs","author":"Info telescoop","date":"09-10-2026","format":false,"excerpt":"Adjustment knobs from Bob's Knobs for the secondary mirror of the classic orange Celestron C8. Collimate without tools.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/58043_1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/58043_1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/58043_1.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":112853,"url":"https:\/\/www.telescoop.nl\/en\/afstelschroeven-voor-de-vangspiegel-van-de-celestron-c6-f-10-metrische-draad-bobs-knobs\/","url_meta":{"origin":112861,"position":1},"title":"Adjusting screws for the viewfinder of the Celestron C6 f\/10, metric thread | Bob\u2019s Knobs","author":"Info telescoop","date":"09-10-2026","format":false,"excerpt":"Metric adjustment knobs from Bob's Knobs for the secondary mirror of the Celestron C6 f\/10, for collimation without a screwdriver.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/55083_1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/55083_1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/55083_1.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":112851,"url":"https:\/\/www.telescoop.nl\/en\/afstelschroeven-voor-de-vangspiegel-van-de-celestron-c5-f-10-metrische-draad-bobs-knobs\/","url_meta":{"origin":112861,"position":2},"title":"Adjusting screws for the viewfinder of the Celestron C5 f\/10, metric thread | Bob\u2019s Knobs","author":"Info telescoop","date":"09-10-2026","format":false,"excerpt":"Bob's Knobs with metric thread for the viewfinder of the Celestron C5 f\/10. You adjust the viewfinder with large knobs instead of tools.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/54586_1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/54586_1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/10\/54586_1.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":30398,"url":"https:\/\/www.telescoop.nl\/en\/bobs-knobs-afstelschroeven-voor-celestron-sct-11-f-10-metric\/","url_meta":{"origin":112861,"position":3},"title":"Bob's Knobs Adjusting Screws for Celestron SCT 11\u2033 f\/10 Metric","author":"","date":"08-10-2025","format":false,"excerpt":"Bob's Knobs for the Celestron 11-inch f\/10 SCT Metric: stainless steel thumb screws for secure, tool-free secondary mirror 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