Product Overview
Overview
- 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 CG-5 Advanced Series mount
Description
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 CG-5 Advanced Series mount
Specifications
| Optical Design | Schmidt-Cassegrain |
| Aperture (mm) | 203.2 mm (8 in) |
| Focal Length | 2032 mm (80 in) |
| Formula:Focal Ratio | 10 |
| Focal Length of Eyepiece 1 (mm) | 25 mm (0.98 in) |
| Formula:Magnification of Eyepiece 1 | 81 x |
| Finderscope | 6x30 |
| Star Diagonal | 1.25 |
| Optical Tube | Aluminum |
| Formula:Highest Useful Magnification | 480 x |
| Formula:Lowest Useful Magnification | 29 x |
| Formula:Limiting Stellar Magnitude | 14 |
| Formula:Resolution (Rayleigh) | 0.69 arc seconds |
| Formula:Resolution (Dawes) | 0.57 arc seconds |
| Formula:Light Gathering Power (Compared to human eye) | 843 x |
| Secondary Mirror Obstruction | 2.5 in (64 mm) |
| Formula:Secondary Mirror Obstruction by Diameter | 31% |
| Formula: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 | CG-5 Mount |
