Bob's Knobs Collimation Knobs for Celestron 11" f/10 with Trifid Fastar
With these Bob's Knobs Collimation Knobs, it's easy to make collimation adjustments to your Celestron C11 with Trifid Fastar. You can even collimate while looking through the eyepiece on most telescopes. What's more, you'll never drop that pesky little Allen wrench or screwdriver in the grass again. Installation is a snap with included instructions, and you can undo the modification at any time.
These knobs fit Celestron 11" (28 cm) f/10 SCT versions (metal or carbon fiber tube) with standard thread factory collimation screws and "Trifid" rotary cover Fastar secondary housing. Factory collimation screws are silver Phillips. These knobs will also fit the C11 with Starizona Hyperstar if the collimation screws have standard threads.
Bob's Knobs Product Number: C11STDFST