Fits Celestron C11 with Fastar secondary housing and black Phillips factory collimation screws. Fits: Celestron 11” (28 cm) f/10 SCT versions (metal or carbon fiber tube) with metric thread factory collimation screws and "Trifid" rotary cover Fastar secondary housing. Factory collimation screws are black Phillips. These knobs will fit the C11 with EdgeHD optics. They will also fit the C11 with Starizona Hyperstar if the collimation screws have metric threads. Knobs: Black plastic, 13 mm (5/8”) diameter Threads: Stainless steel Notes: |
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