Specialized for Celestron SCT 8" EdgeHD:Exclusively designed for the Celestron 8” (20 cm) f/10 SCT with Fastar secondary and EdgeHD optics.
Part Information - Part: C8edgBO and C8edgSS:
Telescope Compatibility:Perfectly fits Celestron 8" f/10 SCTs marked “EDGEHD OPTICS” on the corrector ring.
Knob Variants:Available in black oxide steel (black) or stainless steel (silver), each 12 mm (1/2”) in diameter for ease of use.
Thread Material:Choose between black oxide or stainless steel threads for a secure and lasting fit.
Important Usage Notes:
Specific Model Fit:These knobs are only for the EdgeHD Fastar secondary version. Not for use on non-EdgeHD Fastar secondaries due to screw length differences.
Thread Length Matching:Ensure the thread length on our knobs matches that of the factory collimation screws.
Environmental Suitability:
Black Oxide Steel Use:Ideal for dry climates; periodic oiling recommended for rust prevention.
Stainless Steel Advantage:Offers enhanced corrosion resistance, suitable for coastal, humid areas, or places with frequent condensation.
Dust Cover Compatibility:
Normal Fit with Knobs Installed:The factory dust cover will continue to fit as usual with Bob's Knobs installed.
Enhanced Telescope Maintenance:Perfect for Celestron SCT 8” EdgeHD telescope owners seeking a simple, tool-free solution for accurate collimation adjustments.
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