Bob's Knobs for C9.25 f/10 Secondary (non-Fastar) with Metric Collimation Screw Threads

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Knobs for C9.25 f/10 Secondary with Metric Collimation Screw Threads and “Trifid” Fastar Housing


Part: C9.25fst
Fits: Celestron 9.25” (23.5 cm) f/10 SCT versions with "Trifid" Fastar secondary housing

Knobs: Black plastic, 15 mm (5/8”) diameter
Threads: Stainless steel

Notes:

  1. These knobs fit the Celestron 9.25” f/10 SCT with a Fastar secondary which has black Phillips factory collimation screws that are recessed into the secondary housing. These versions may or may not have EdgeHD optics.
  2. Collimation screws on these telescopes are small with very fine threads. Knobs must be tightened gently (just enough to hold the secondary in place) to prevent damage to either the knob or secondary assembly.
  3. Knobs include a set of long spacers so they sit slightly above the rotary cover opening.
  4. The factory dust cover will fit normally with Bob’s Knobs installed.
  5. The rotary secondary cover must remain open when the knobs are installed. The cover is cosmetic only and will not affect operation of the telescope.
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