Bob's Knobs

Bob's knobs allow you to collimate your Celestron SCT or EdgeHD optics without tools.

Bob's Knobs are a significant upgrade to the factory collimation knobs and screws on Sky-Watcher Dobsonians.

Bob's knobs allow you to collimate your Meade telescope without tools.

With Bob's Knobs you never run the risk of dropping a screwdriver onto the primary mirror of your Orion SkyQuest Dobsonian.