We offer knobs for all versions of the Celestron 14” f/11 Schmidt-Cassegrain secondary with Allen collimation screws, or either standard or metric Phillips collimation screws. Select knobs for your telescope from the list below.
Special Note: The Celestron 14” SCT uses either standard 6-32 or metric M3 collimation screws. Headless set-style factory collimation screws have standard threads. Phillips screws can have either standard or metric threads. Phillips collimation screws are found on both EdgeHD and non-EdgeHD late model C14 telescopes, either with or without the Fastar secondary. Generally black Phillips collimation screws have metric threads and silver Phillips collimation screws have standard threads. Some black Phillips collimation screws have standard threads, however, so if you order the wrong screws you can exchange them at no additional cost.