Specifically for Celestron SCT 5" f/10: Designed for Celestron 5” (13 cm) f/10 SCT models (C5, NexStar 5SE, Omni 127) with black Phillips factory collimation screws featuring metric threads.
Part Options - Part: C5metBO and C5metSS:
Telescope Compatibility: Fits Celestron 5" f/10 models with black Phillips metric collimation screws. Not suitable for scopes with silver factory screws.
Knob Variants: Available in black oxide steel (black) or stainless steel (silver), each 12 mm (1/2”) in diameter for comfortable use.
Thread Material: Choose between black oxide or stainless steel threads for a perfect match with your telescope's screws.
Model Year and Screw Length Considerations:
Model Year Compatibility: Fits only 2006 and later C5 models with black Phillips screws. Earlier or other models require standard knobs (refer to Item A).
Screw Length Note: Some C5 models have 10mm long metric screws. If so, install knobs without white spacers.
Environmental Suitability:
Black Oxide Steel Use: Ideal for dry environments; periodic oiling is recommended for corrosion prevention.
Stainless Steel Advantage: Offers enhanced corrosion protection, suitable for coastal or humid areas, or where dew is frequent.
Installation and Maintenance:
Dust Cover Fit: Ensures the factory dust cover remains functional with Bob's Knobs installed.
Removal of Plastic Cover: If your telescope has a small plastic cover over the factory screws, it must be removed for knob installation. The cover is cosmetic and does not affect telescope operation.
Enhanced Telescope Tuning: Perfect for Celestron SCT 5” f/10 telescope owners seeking a straightforward, tool-free method for accurate collimation adjustments.
Choosing a selection results in a full page refresh.
