C8-A XLT (CGE) Optical Tube Assembly

$1,039.00
Article number: 91024-XLT
Availability: Order now!
Delivery time: Ships in 2-3 Days from our Warehouse

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
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