Bob's Knobs Celestron 9.25" SCT Collimation Knobs Standard Secondary
Bob's Knobs Celestron 9.25" SCT Collimation Knobs Standard Secondary
Bob's Knobs Celestron 9.25" SCT f/10 Collimation Knobs fit Celestron 9.25" (23.5 cm) f/10 SCT with standard collimation screw threads. (Not for CPC 925 or EdgeHD)
- Bob's Knobs are made from black plastic and are 16 mm in diameter or 5/8".
- The threads are black, anodized aluminum alloy. Before installing the knobs, make sure the knob threads match the factory screw threads
- With Bob's Knobs installed your factory dust cover will fit normally
- In order to clear the secondary housing lip the knobs include a set of long spacers
- Manufactured Celestron 9.25" SCTs before 2006 have standard collimation screw threads