Celestron C8-A XLT Optical Tube with CG5 Dovetail # 91020-XLT
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Quick 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
Product Details
Specifications:
- Optical Design: Schmidt-Cassegrain
- Aperture (mm): 203.2 mm (8")
- Focal Length: 2032 mm (80")
- Focal Ratio: 10
- Focal Length of Eyepiece 1 (mm): 25 mm (0.98")
- Magnification of Eyepiece 1: 81x
- Finderscope: 6x30
- Star Diagonal: 1.25
- Optical Tube: Aluminum
- Highest Useful Magnification: 480x
- Lowest Useful Magnification: 29x
- Limiting Stellar Magnitude: 14
- Resolution (Rayleigh): 0.69 arc seconds
- Resolution (Dawes): 0.57 arc seconds
- Light Gathering Power (Compared to human eye): 843x
- Secondary Mirror Obstruction: 64 mm (2.5")
- Secondary Mirror Obstruction by Diameter: 31%
- Secondary Mirror Obstruction by Area: 9.77%
- Optical Coatings: StarBright XLT
- Optical Tube Length: 432 mm (17")
- Optical Tube Weight: 12.5 lbs (5.67 kg)
- Dovetail Compatibility: CG-5 Mount
Other Information
- Country of Manufacture: China
