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Bob's Knobs Celestron 9.25" SCT Secondary Collimation Knobs Metric - Black Oxide - C925METBO


Bob's Knobs for Celestron 9.25" SCT Secondary
Metric - Black Oxide

Bob's Knobs Celestron 9.25" SCT f/10 Collimation Knobs fit Celestron 9.25" (23.5 cm) f/10 SCT versions with metric screw threads (CPC 925). (Not for CPC 925 with Trifid Faster or EdgeHD optics).

  • Bob's Knobs are made from black, oxide steel and are 12 mm in diameter or 1/2"
  • The threads are black, oxide steel
  • Because the knobs sit inside the tall lip around the perimeter of the secondary, it may be hard to grasp with two fingers. Using a thumb or finger against the inside of the edge of the knob will ease adjustments
  • With Bob's Knobs installed your factory dust cover will fit normally.
  • There may be a small plastic cover over the factory collimation screw on some telescope versions. This cover will need to be removed and set aside with the installation of Bob's Knobs. No worries though, the cover is cosmetic only and will not affect functionality of the scope