Celestron C8-A XLT (CGE) Optical Tube Assembly
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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
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- 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
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PUBLIC SPECS |
- 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
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