Celestron 9.25" SCT Metric Collimation Knobs
Bob's Knobs
From $20.95
3 stores
Bob's Knobs Celestron 9.25" SCT Metric Collimation Knobs are tool-free collimation thumbscrews designed to replace factory collimation screws on Celestron 9.25" f/10 Schmidt-Cassegrain telescopes with metric screw threads (CPC 925 models). These precision-machined knobs enable quick on-the-fly secondary mirror adjustments during observation sessions without requiring screwdrivers or Allen wrenches, making collimation accessible even in darkness or while wearing gloves. Available in black oxide steel or stainless steel finishes, they optimize optical alignment for sharper planetary and deep-sky images.
Astronomics
Bob’s Knobs 3 Collimating Knobs for Metric Celestron 9.25" CPC 925 SCTs
$20.95
High Point Scientific
Celestron 9.25" SCT Secondary Collimation Knobs Metric - Black Oxide
Ships to US only
$22.95
Astroshop.eu
SCT 9.25" f/10 metric (oxidised steel)
Worldwide shipping
€39.90
~$46.97
Specifications
| Telescope Compatibility | Celestron 9.25 inch f/10 SCT with metric screw threads (CPC 925) |
| Thread Material Options | Black oxide steel or stainless steel |
| Knob Material Options | Black oxide steel or stainless steel |
| Installation Method | Tool-free replacement - no tools required |
| Number of Knobs | 3 |
| Thread Type | Metric M3 |
| Not Compatible With | Celestron 9.25 with Trifid Fastar or EdgeHD optics |
| Knob Diameter | 12 mm |