Bob's Knobs Celestron SCT 11” f/10 metric Fastar

Bob's Knobs for Celestron SCT 11” f/10 Fastar:

Precision Collimation Made Easy

• Ideal for Celestron SCT 11" f/10 Fastar: Specifically designed for Celestron 11” (28 cm) f/10 SCTs (metal or carbon fiber tube) with metric thread factory collimation screws and Fastar secondary housing.
• Part Information - Part: C11metfst:
  • Telescope Compatibility: Suitable for Celestron C11 models with EdgeHD optics and Starizona Hyperstar (if they have metric threads).
  • Knob Design: Crafted from black plastic, each knob measures 16 mm (5/8”) in diameter for straightforward adjustments.
  • Thread Material: Equipped with black oxide steel threads for durability and precise fit.
• Thread Type Identification:
  • Metric vs. Standard Threads: Most models with black Phillips collimation screws have metric threads, though a few may have standard threads. Use our hints for correct identification.
  • Return Policy: If the wrong thread type is ordered, knobs can be returned for a refund, or both sets can be ordered with the option to return the unused set.
• Gentle Tightening Required:
  • Fine Thread Caution: Knobs should be tightened gently to avoid damaging the fine-threaded collimation screws or the secondary assembly.
• Rotary Secondary Cover Instructions:
  • Cover Positioning: If your telescope has a rotary secondary cover, it must stay open when knobs are installed. The cover is purely cosmetic.
• Special Note on Dust Cover:
  • Dust Cover Compatibility: If the dust cover doesn't fit due to knob interference, contact us for lower profile knobs.
• User-Friendly Collimation Solution: Perfect for Celestron SCT 11” f/10 Fastar telescope owners seeking an efficient, tool-free method for precise collimation adjustments.