Bob's Knobs for Sky-Watcher Newtonian Telescopes:

Secondary Collimation Simplified

Secondary Collimation Made Easy: Elevate your Sky-Watcher Newtonian telescope's collimation precision with Bob's Knobs. Our specialized knobs are designed for secondary collimation on Dobsonian mount configurations, ensuring optimal telescope performance.
Part Details - Part: CNsec30 or CNsec35:
- Enhanced Control: Achieve precise secondary collimation with black plastic knobs featuring a 13 mm (1/2”) diameter and stainless steel threads. Take full command of your telescope's secondary mirror alignment.
- Tailored Lengths: Choose between two screw lengths - 30 mm and 35 mm - to perfectly match your telescope's aperture size. Knobs with 30 mm screws are ideal for apertures up to 10", while 35 mm screws are recommended for apertures of 12" and larger.
- Versatile Compatibility: These knobs are compatible with a range of Sky-Watcher Newtonian telescopes, including 5”, 6”, 8”, 10”, and 12” apertures.
Complete Set: Our listed price includes a comprehensive set of knobs, ensuring that you have everything you need to streamline your telescope's secondary collimation.
Usage Tip: When ordering, select knobs with a screw length that allows for sufficient clearance from the secondary housing. This ensures hassle-free and effective collimation adjustments, tailored to your telescope's size.

Upgrade your Sky-Watcher Newtonian telescope's collimation precision with Bob's Knobs. Whether you have a 5" or 12" aperture, our knobs provide the control and ease of use needed for outstanding secondary collimation results.

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Bob's Knobs Sky Watcher 5” to 12” Newt secondary

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