Need help?Do you have a question about the Celestron C90 and is the answer not in the manual?
General| Optical Design | Maksutov-Cassegrain |
|---|---|
| Focal Length | 1250 mm |
| Focal Ratio | f/13.9 |
| Aperture | 90 mm |
| Eyepiece Barrel Diameter | 1.25" |
| Mount Type | Not included (OTA only) |
To Next Page
