C8-A-XLT (CGE) Optical Tube Assembly
Celestron
$1,399.95
1 stores
In stock
The Celestron C8-A-XLT is a Schmidt-Cassegrain optical tube assembly featuring a corrector plate, spherical primary mirror, and secondary mirror that work together to reduce spherical and chromatic aberrations for crisp, clear high-resolution images with accurate color representation. It combines Celestron's proprietary StarBright XLT optical coatings to improve light transmission and reflectivity across the entire visual spectrum. This rugged aluminum optical tube is only 17 inches long and weighs just 13 pounds, making it easy to transport and set up. The tube offers 2032 mm of focal length and a focal ratio of f/10, with the added versatility of Fastar.
Specifications
| Optical Tube Length | 431.8 mm |
| Secondary Mirror Obstruction by Diameter | 31% |
| Lowest Useful Magnification | 29 |
| Eyepiece Magnification | 81 |
| Focal length | 2032 mm |
| Optical Coatings | StarBright XLT |
| Resolution (Dawes) | 0.57″ |
| Dovetail Compatibility | CGE (Losmandy) |
| Fastar Compatible | ✓ |
| Optical design | Schmidt-Cassegrain |
| Optical Tube Diameter | 238 mm |
| Secondary Mirror Obstruction by Area | 9.77% |
| Limiting Stellar Magnitude | 14 |
| Finderscope | 6x30 |
| Aperture | 203.2 mm |
| Weight | 5.67 lb |
| Resolution (Rayleigh) | 0.69″ |
| Light Gathering Power | 843 |
| Visual Back | 1.25 inch |
| Focal ratio | f/10 |
| Secondary Mirror Obstruction Diameter | 63.5 mm |
| Highest Useful Magnification | 480 |
| Included Eyepiece | 25mm |
| Wavefront Error | 1/4 |