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.
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