Celestron C8-A XLT (CGE) Optical Tube Assembly
Article number: | 91024-XLT |
Availability: | In stock |
Delivery time: | In Stock! |
General Features
- 8" Schmidt-Cassegrain Optical Tube Assembly
- Aluminum Optical Tube
- Celestron's premium StarBright XLT coatings
- 2032 mm focal length (f/10)
- 25 mm eyepiece included (81x)
- Visual back allows for use with 1.25" accessories
- 6x30 finderscope to help accurately find objects
- Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
- Includes dovetail rail compatible with CGE mount
Specifications
Optical Design | Schmidt-Cassegrain |
---|---|
Aperture (mm) | 203.2 mm (8 in) |
Focal Length | 2032 mm (80 in) |
Focal Ratio | 10 |
Focal Length of Eyepiece 1 (mm) | 25 mm (0.98 in) |
Magnification of Eyepiece 1 | 81 x |
Finderscope | 6x30 |
Star Diagonal | 1.25 |
Optical Tube | Aluminum |
Highest Useful Magnification | 480 x |
Lowest Useful Magnification | 29 x |
Limiting Stellar Magnitude | 14 |
Resolution (Rayleigh) | 0.69 arc seconds |
Resolution (Dawes) | 0.57 arc seconds |
Light Gathering Power (Compared to human eye) | 843 x |
Secondary Mirror Obstruction | 2.5 in (64 mm) |
Secondary Mirror Obstruction by Diameter | 31% |
Secondary Mirror Obstruction by Area | 9.77% |
Optical Coatings | StarBright XLT |
Optical Tube Length | 17 in (432 mm) |
Optical Tube Weight | 12.5 lbs (5.67 kg) |
Dovetail Compatibility | CGE Mount |