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Bob's Knobs for Vixen R200SS Primary # R200pri

5.0 (2 Reviews) Read Reviews Write Review
Brand Bob's Knobs
Part Number R200pri
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: R200pri
Fits: Vixen R200SS telescopes.

Primary collimation
- Knobs: Black plastic, 13 mm (1/2") diameter
- Threads: Stainless steel

Primary Lock
- Knobs: Black plastic, 16 mm (5/8") diameter
- Threads: Stainless steel

Notes:
1. Since the factory collimation and locking screws are close together, knobs must be staggered in height. The locking knobs protrude further than the collimation knobs.
2. Protect the locking knobs from damage, and do not support the OTA using the locking knobs as feet.

Reviews

5.0 (Based on 2 Reviews) 100% of reviewers recommended this product.
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    1. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Giulio P.
      1537715895
      Sep 23, 2018

      5.0 So simple, so essential !

      Pros:

      Cons:

      Comments:

      The two simple sets of easy to handle knobs are an essential tool for aligning both the secondary and the primary mirrors of the very fast (f/4) Vixen R200SS. The knobs can be easily turned by hand, which is a real boon by night and/or during an observing session.

      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
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Philip the Thereminist of Richmond Hill, GA.
      1348272000
      Sep 21, 2012

      5.0 My fingers thank you..

      Pros:

      Easy to Use

      Cons:

      None

      Comments:

      My Vixen R200SS is an F/4 and a pure bear to collimate. Thanks for making this difficult task easier. My astrophotos are much cleaner!

      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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