Bob's Knobs Celestron SCT 9.25” Fastar

Bob's Knobs for Celestron SCT 9.25” Fastar:

Easy Collimation for Advanced Optics

• Specifically for Celestron SCT 9.25" Fastar: Designed for Celestron 9.25” (23.5 cm) f/10 SCT models with the "Trifid" Fastar secondary housing, accommodating telescopes with or without EdgeHD optics.
• Part Information - Part: C9.25fst:
  • Telescope Compatibility: Ideal for Celestron 9.25" f/10 SCTs with a Fastar secondary housing.
  • Knob Design: Made from black plastic, each knob is 15 mm (5/8”) in diameter, ensuring ease of use and precise adjustment.
  • Thread Material: Equipped with black oxide steel threads for durability and a secure fit.
• Special Design Note:
  • Stronger Black Screw Design: Addressing the issue of silver screws coming apart when over-tightened, a more robust design with black screws has been developed. Free replacements are available if needed.
• Installation and Usage:
  • Gentle Tightening Required: Due to the small, fine-threaded collimation screws, knobs should be tightened just enough to hold the secondary securely.
  • Spacer Inclusion: Long spacers are provided to elevate the knobs above the rotary cover opening. The rotary secondary cover must stay open, as it's purely cosmetic.
• Dust Cover and Secondary Cover:
  • Dust Cover Compatibility: Ensures the factory dust cover remains functional and fits as usual with Bob's Knobs installed.
• Enhanced Telescope Tuning: Perfect for Celestron SCT 9.25” Fastar telescope owners looking for an effortless, tool-free method for precise secondary mirror collimation adjustments.