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Celestron C9 1/4-A XLT (CG-5) Optical Tube Assembly


Price: $1,499.95


  • Manufacturer: Celestron
  • MPN: 91025-XLT
  • SKU: CEL-91025-XLT
  • Availability: In-Stock - Ships from Warehouse

*Is ONLY to the LOWER 48.
Not Alaska/Hawaii/ PR/Guam/Thailand, etc


DESCRIPTION  

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 CG-5 Advanced Series mount
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 CG-5 Advanced Series mount
SPECIFICATIONS  

PUBLIC SPECS
  • Optical Design: Schmidt-Cassegrain
  • Aperture (mm): 234.95 mm (9.25 in)
  • Focal Length: 2350 mm (93 in)
  • Focal Ratio: 10
  • Focal Length of Eyepiece 1 (mm): 25 mm (0.98 in)
  • Magnification of Eyepiece 1: 94 x
  • Finderscope: 6x30
  • Star Diagonal: 1.25
  • Optical Tube: Aluminum
  • Highest Useful Magnification: 555 x
  • Lowest Useful Magnification: 34 x
  • Limiting Stellar Magnitude: 14.4
  • Resolution (Rayleigh): 0.59 arc seconds
  • Resolution (Dawes): 0.49 arc seconds
  • Light Gathering Power (Compared to human eye): 1127 x
  • Secondary Mirror Obstruction: 3.35 in (85 mm)
  • Secondary Mirror Obstruction by Diameter: 36%
  • Secondary Mirror Obstruction by Area: 13%
  • Optical Coatings: StarBright / XLT
  • Optical Tube Length: 22 in (559 mm)
  • Optical Tube Weight: 20 lbs (9.07 kg)
  • Dovetail Compatibility: CG-5 Mount




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