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Bob's Knobs for Celestron C8 f/10 Secondary with EdgeHD Optics # C8edg

5.0 (3 Reviews) Read Reviews Write Review
Brand Bob's Knobs
Part Number C8edg
Availability available

Product Info

Manufacturer Description

Collimate your Catadioptric or Newtonian reflector style telescopes without tools!

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. These thumbscrews are also much easier to use with gloves on. And perhaps most importantly, 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.

Part: C8edg
Fits: Celestron 8" (20 cm) f/10 SCT with Fastar secondary and EdgeHD optics.

Knobs: Black oxide steel, 12 mm (1/2") diameter
Threads: Black oxide steel

Notes:
1. 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.
2. The factory dust cover will fit normally with Bob's Knobs installed.

Reviews

5.0 (Based on 3 Reviews) 100% of reviewers recommended this product.
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    1. Guest

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      User Notes:
      Review by Damon A.
      1527316252
      May 25, 2018

      5.0 they work

      Pros:

      Cons:

      Comments:

      these are a life saver in the dark out in the field

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

      Skill Level
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      Time with Product
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      User Notes:
      Review by James K.
      1506052029
      Sep 21, 2017

      5.0 Perfect

      Pros:

      Cons:

      Comments:

      A perfect fit. Made collimating much easier.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    3. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Ford322 of Redondo Beach, CA.
      1348272000
      Sep 21, 2012

      5.0 Collimation Made Easy

      Pros:

      Easy to Use,Compact

      Cons:

      Comments:

      Replace the phillips head screws with these knobs. Fingertip collimation with no tools. Easy to use in the dark, with no danger to the corrector plate. These should be standard equipment.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Specifications

      Manufacturer Bob's Knobs
      Additional Information bobs-knobs-c8hyp
      Prism Type No
      Eyepiece Focal Length Ships by Next Business Day