Bob's Knobs for Celestron SCT 11” f/10 Standard:

Easy Collimation Adjustments

Custom-Fit for Celestron SCT 11" f/10: Tailored for Celestron 11” (28 cm) f/10 SCT models with flat secondary housing and standard collimation screw threads, excluding CPC 1100 or EdgeHD models.
Part Details - Part: C11std:
- Telescope Suitability: Compatible with metal or carbon fiber tube versions of Celestron 11” SCTs, not fitting Starizona Hyperstar secondary (refer to Item C).
- Knob Features: Made of black plastic, each knob is 16 mm (5/8”) in diameter, designed for user-friendly adjustments.
- Thread Material: Constructed with black anodized aluminum alloy threads for a secure fit and lasting use.
Thread Type Identification:
- Standard vs. Metric Threads: Silver factory screws typically have standard threads. Use our hints to identify the thread type on your telescope.
- Compatibility Check: Ensure the knob threads match your telescope’s factory screw threads before installation.
Compatibility with Factory Dust Cover:
- Dust Cover Fit: The factory dust cover will continue to fit normally with Bob’s Knobs installed.
Telescope Manufacture Date Note:
- Pre-2006 Models: Celestron 11” SCTs made before 2006 usually feature standard collimation screw threads.
Effortless Telescope Maintenance: Ideal for Celestron SCT 11” f/10 telescope owners seeking a simple, tool-free method for precise collimation adjustments.