Product Overview
Knobs: Black oxide steel (black) or stainless steel (silver), 12 mm (1/2 ) diameter
Threads: Black oxide or stainless steel
Notes:
Threads: Black oxide or stainless steel
Notes:
- These knobs will fit only the Celestron 8 SCT with Fastar secondary and EdgeHD optics. These telescopes are marked EDGEHD OPTICS on the corrector ring. Do not use these knobs on the non-EdgeHD Fastar secondary; the screws on these knobs are too long. Be sure to check that the thread length on our knobs matches the thread length on the factory collimation screws.
- The factory dust cover will fit normally with Bob s Knobs installed.
