Bob's Knobs for C9.25 f/10 Secondary with Standard Collimation Screw Threads
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Knobs for C9.25 f/10 Secondary with Standard Collimation Screw Threads
Fits: Celestron 9.25” (23.5 cm) f/10 SCT versions with standard collimation screw threads (not for CPC 925 or EdgeHD).
Knobs: Black plastic, 16 mm (5/8”) diameter
Threads: Black anodized aluminum alloy
- Silver factory collimation screws have standard threads. Our hints will help you determine which screws are on your telescope. Make sure the knob threads match the factory screw threads before installing the knobs.
- The factory dust cover will fit normally with Bob’s Knobs installed.
- Knobs include a set of long spacers so they clear the secondary housing lip.
- Celestron 9.25” SCTs manufactured prior to 2006 have standard collimation screw threads.