C11-A XLT (CG-5) Optical Tube Assembly

0.00 excl. 18% GST

  • 11″ Schmidt-Cassegrain Optical Tube Assembly (OTA)
  • Features Celestron’s premium patented StarBright XLT Optical coatings
  • 2800mm focal length (f/10)
  • Fastar compatible
  • Tube constructed of durable and lightweight aluminum
  • Includes: 40mm eyepiece (70x), 9×50 Optical finderscope, star diagonal, 1.25” visual back, CG-5 dovetail bar

Available on backorder

Optical Tube INFO:
Optical Design Schmidt-Cassegrain
Aperture 279.4mm (11″)
Focal Length 2800mm (110″)
Focal Ratio f/10
Focal Length of Eyepiece 1 40mm (1.57″)
Magnification of Eyepiece 1 70x
Finderscope 9×50
Star Diagonal 1.25″ Star Diagonal
Optical Tube Aluminum
Highest Useful Magnification 660x
Lowest Useful Magnification 40x
Limiting Stellar Magnitude 14.7
Resolution (Rayleigh) 0.5 arc seconds
Resolution (Dawes) 0.42 arc seconds
Light Gathering Power (Compared to human eye) 1593x
Secondary Mirror Obstruction 95mm (3.75″)
Secondary Mirror Obstruction by Diameter 34%
Secondary Mirror Obstruction by Area 12%
Optical Coatings StarBright XLT
Optical Tube Length 610mm (24″)
Optical Tube Diameter 312.42mm (12.4″)
Optical Tube Weight 27.5 lbs (12.4 kg)
Dovetail CG-5 Dovetail bar

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