Bob's Knobs for Celestron 8" Edge HD Telescopes

Bob's Knobs for Celestron 8" Edge HD Telescopes
Item # BS-C8EDG
0 Questions(s)

In Stock

  • Collimate your Celestron 8" Edge HD in a snap!
  • This set of Bob's Knobs fits Celestron 8” (20 cm) f/10 SCT's with Fastar secondary and EdgeHD optics
  • Knobs: Black oxide-steel, 12 mm (1/2 inch) diameter - Threads: Black oxide steel.
  • Celestron C8 Edge HD Bob's Knobs allows the normal fit of the factory dust cover.


Bob's Knobs for Celestron 8" EdgeHD Telescopes

Now there is no more tools needed to make collimation adjustments to your telescope! It's easy . . . just grab a Bob's Knob and turn. You can even collimate while looking through the eyepiece on most telescopes. What's more, you'll never drop that pesky little Allen wrench or screwdriver in the grass again. Installation is a snap with included instructions, and you can undo the modification at any time.

Fits: 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. It is important that you choose the correct style Bob's Knobs for your telescope. Please note the number and type of screws on your secondary housing before ordering.

The factory dust cover will fit normally with Bob’s Knobs installed.

Bob's Knobs Product Number: C8EDG
Additional Information

Additional Information

Manufacturer Bob's Knobs
Barrel Size Knob-Style
Collimation Knobs For... Celestron Telescopes
For What Telescopes? Cassegrains
Warranty Lifetime Warranty
Included Items

Included Items

  • Set of Bob's Knobs for Celestron 8" Edge HD Telescopes
Questions & Answers

Product Questions

No questions yet. Be the first to ask the question!
Support / Downloads
Related Blog Posts