Celestron C9 1/4-A XLT (CGE) Optical Tube Assembly

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Celestron C9 1/4-A XLT (CGE) Optical Tube Assembly
AUD $2,375.00

Availability: Backorder Available


  • 9.25" Schmidt-Cassegrain Optical Tube Assembly

  • Aluminum Optical Tube

  • Celestron's premium StarBright XLT coatings

  • 2350 mm focal length (f/10)

  • 25 mm eyepiece included (94x)

  • 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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Details

General Features

  • 9.25" Schmidt-Cassegrain Optical Tube Assembly
  • Aluminum Optical Tube
  • Celestron's premium StarBright XLT coatings
  • 2350 mm focal length (f/10)
  • 25 mm eyepiece included (94x)
  • 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

Additional Information

Specifications
OPTICAL TUBE INFO: 
Optical Design Schmidt-Cassegrain
Aperture 2345mm (9.25")
Focal Length 2350mm (93")
Focal Ratio f/10
Focal Length of Eyepiece 1 25mm (0.98")
Magnification of Eyepiece 1 94x
Finderscope 6x30
Star Diagonal 1.25" Star Diagonal
Optical Tube Aluminum
Highest Useful Magnification 555x
Lowest Useful Magnification 34x
Limiting Stellar Magnitude 14.4
Resolution (Rayleigh) 0.59 arc seconds
Resolution (Dawes) 0.49 arc seconds
Light Gathering Power (Compared to human eye) 1127x
Secondary Mirror Obstruction 85mm (3.35")
Secondary Mirror Obstruction by Diameter 36%
Secondary Mirror Obstruction by Area 13%
Optical Coatings StarBright XLT
Optical Tube Length 559mm (22")
Optical Tube Diameter 271.78mm (10.7")
Optical Tube Weight 20 lbs (9.07 kg)
Dovetail CGE Dovetail Bar

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