Bob's Knobs Celestron SCT 8” f/10 standard

Bob's Knobs for Celestron SCT 8” f/10 Standard:

Enhance Your Collimation Process

• Customized for Post-1980 Celestron SCT 8" f/10: Specifically designed for Celestron 8” (20 cm) f/10 SCTs manufactured post-1980 with factory Allen or silver Phillips collimation screws. Suitable for models with or without Fastar secondary with silver screws.
• Part Details - Part: C8std:
  • Telescope Suitability: Ideal for various Celestron models including C8 black or gray, Ultima 2000, NexStar 8, and many others, including post-2005 orange-tube models. Not compatible with pre-1980 orange tube models or most scopes with black Phillips factory screws.
  • Knob Features: Made of black plastic, each knob is 13 mm (1/2”) in diameter, ensuring easy grip and accurate adjustments.
  • Thread Quality: Constructed with black anodized aluminum alloy threads for a secure and durable fit.
• Compatibility and Model Identification:
  • Fits Pre- and Post-2005 Models: Suitable for C8 models made prior to 2005 (excluding pre-1980 orange tube) and most post-2005 models with silver factory screws.
  • Metric vs. Standard Threads: Most black Phillips screws models require metric knobs (see Item C), but some post-2005 models have standard threads.
• Spacer Usage:
  • Optional Spacers: Spacers are provided to elevate the knobs for ease of use, but can be omitted if they interfere with the dust cover. Required for Fastar secondary with silver screws.
• Dust Cover and Secondary Cover:
  • Dust Cover Compatibility: The factory dust cover will fit as usual with Bob's Knobs installed.
  • Removal of Plastic Cover: If present, a small plastic cover over factory screws must be removed for knob installation. The cover is cosmetic.
• Simplified Telescope Adjustment: Perfect for Celestron SCT 8” f/10 telescope owners seeking an effortless, tool-free solution for accurate secondary mirror collimation.