- Description
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.
You may also like
Recently viewed
Recent Blog Posts
View all
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained
Back focus is one of those astrophotography terms that c
Read More
Read More
Controlling Your WandererCover Flat Panel with ASIAIR
Wanderer Astro's latest firmware update lets ASIAIR Plus and StellaVita users control the WandererCover V4 series directly from their imaging setup —
Read More
Read More
ZWO Duo camera's and compatible image circles
Maximize Performance with the Right Image Circle for Your ZWO ASI2600 and ASI585MC Air Cameras
If you're using one of the latest ZWO ASI Air cameras,
Read More
Read More

