Bob's Knobs

Bob's Knobs Bob's Knobs allow tool free collimation of the secondary mirrors of Schmidt-Cassegrain and many Dobsonian telescopes.

  • Bob's Knobs for Celestron

    Bob's Knobs for Celestron

    13

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

  • Bob's Knobs for Sky-Watcher

    Bob's Knobs for Sky-Watcher

    3

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

  • Bob's Knobs for Meade

    Bob's Knobs for Meade

    8

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

  • Bob's Knobs for Orion

    Bob's Knobs for Orion

    2

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


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