C11-A XLT (CG5) Optical Tube Assembly

$1,850.00
Article number: 91067-XLT
Availability: Order now!
Delivery time: Ships in 2-3 Days from our Warehouse

General Features

  • 11" Schmidt-Cassegrain Optical Tube Assembly
  • Aluminum Optical Tube
  • Celestron's premium StarBright XLT coatings
  • 2800 mm focal length (f/10)
  • 40 mm eyepiece included (70x)
  • Visual back allows for use with 1.25" accessories
  • 9x50 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) 279.4 mm (11 in)
Focal Length 2800 mm (110 in)
Focal Ratio 10
Focal Length of Eyepiece 1 (mm) 40 mm (1.57 in)
Magnification of Eyepiece 1 70 x
Finderscope 9x50
Star Diagonal 1.25
Optical Tube Aluminum
Highest Useful Magnification 660 x
Lowest Useful Magnification 40 x
Limiting Stellar Magnitude 14.7
Resolution (Rayleigh) 0.5 arc seconds
Resolution (Dawes) 0.42 arc seconds
Light Gathering Power (Compared to human eye) 1593 x
Secondary Mirror Obstruction 3.75 in (95 mm)
Secondary Mirror Obstruction by Diameter 34%
Secondary Mirror Obstruction by Area 12%
Optical Coatings StarBright / XLT
Optical Tube Length 24 in (610 mm)
Optical Tube Weight 27.5 lbs (12 kg)
Dovetail Compatibility CG-5 Mount
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