About the Bob's Knobs Celestron C9.25 f/10 Secondary with Standard Collimation Screw Threads...
Collimate your Schmidt Cassegrain Telescope or Newtonian Reflector Telescope without tools when you use Bob's Knobs!
It'''s easy... just grab a Bob's Knob Collimation Thumbscrew and turn. You can even do it while looking through the eyepiece on most scopes. And you''ll never drop that pesky little Allen wrench or screwdriver into the grass again. Installation is a snap with the included instructions, and you can undo the modification at any time.
Note: Silver factory collimation screws have standard threads. 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.
Bob's Knobs Celestron C9.25 f/10 Secondary with Standard Collimation Screw Threads Features...
- Installation is a snap with the included instructions
- Modification can be undone at any time
- Knobs are crafted from black plastic, black oxide steel (black) and/or stainless steel (silver)
- No tools required to perform a collimation!
Bob's Knobs Celestron C9.25 f/10 Secondary with Standard Collimation Screw Threads Specifications...
Equipment Type: Collimation Knobs
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 alloyBob''s Knobs Product Number: C9.25std