Click to enlarge image
C11-A XLT (CGE) OTA
Item no. 91036 XLT
SRP: £2175.00
Warranty: 24 Months

Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount. Each OTA is made to the same exacting standards as those used on all our high quality telescopes. All optical surfaces are coated with Celestron’s high efficiency StarBright® multi-layered coating group. These tube assemblies are equipped with the same dovetail mounting bar used on the CGE and Advanced Series for easy attachment to a variety of popular mounts.

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 CGE

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: CGE Mount
 

 To discover more and to find your local Celestron dealer please visit our Dealer Page

PDF Downloads
PDF