Bob's Knobs for Celestron SCT 6” f/10:

Streamlined Collimation for Your Telescope

Custom-Fit for Celestron SCT 6" f/10: Specially designed for various Celestron 6” (15 cm) f/10 SCT models including C6-A-XLT, C6-GT, C6-S, C6-SE, C6-SGT, among others.
Part Options - Part: C6BO and C6SS:
- Telescope Suitability: Compatible with Celestron 6” f/10 SCT versions.
- Knob Variants: Available in black oxide steel (black) or stainless steel (silver), each 12 mm (1/2”) in diameter for comfortable adjustments.
- Thread Options: Choose between black oxide or stainless steel threads to match your telescope's needs.
Thread Length and Spacer Usage:
- Screw Length Identification: Secondary collimation screws are either 10 mm or 12 mm long below the screw head.
- Spacer Inclusion: White spacers are provided for use with 10 mm long factory screw threads. Do not use them for 12 mm screw threads.
Environmental Considerations:
- Black Oxide Steel: Recommended for dry environments with occasional oiling needed for anti-corrosion. Displayed in the photo.
- Stainless Steel: Offers superior corrosion protection, ideal for coastal or humid areas, or where dew is frequent.
Dust Cover Compatibility:
- Fits Most Models: The factory dust cover typically fits well with Bob’s Knobs installed, exceptions being some very early telescope versions.
Efficient Telescope Tuning: Perfect for Celestron SCT 6” f/10 telescope owners seeking an easy, tool-free solution for accurate collimation adjustments.