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Need help?Do you have a question about the Celestron C11 and is the answer not in the manual?
General| Focal Length | 2800 mm |
|---|---|
| Focal Ratio | f/10 |
| Optical Design | Schmidt-Cassegrain |
| Highest Useful Magnification | 660x |
| Lowest Useful Magnification | 40x |
| Limiting Stellar Magnitude | 14.7 |
| Resolution (Dawes) | 0.42 arc seconds |
| Light Gathering Power | 1593x |
| Secondary Mirror Obstruction | 95 mm |
| Secondary Mirror Obstruction by Diameter | 34% |
| Aperture | 279 mm (11 inches) |
| Resolution (Rayleigh) | 0.5 arc seconds |
| Optical Tube Length | 610 mm (24 in) |
| Mount Type | Varies by configuration |
| Weight | Varies by configuration |
| Star Diagonal | Not included (typically sold as OTA only) |
| Finderscope | Not included (typically sold as OTA only) |
| Eyepiece | Not included (typically sold as OTA only) |
