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Celestron C14-A Optical Tube Assembly 14" (XLT) 91037-XLT



  • Model: 91037-XLT
  • Manufactured by: Celestron


Celestron C14-A Optical Tube Assembly 14" with Starbright XLT Coatings. 9x50 finderscope, 25mm Plossl eyepiece (81x) -1-1/4", star diagonal-1-1/4", visual back-1-1/4", Aluminum Optical Tube.

  • 14" Schmidt-Cassegrain Optical Tube Assembly
  • Aluminum Optical Tube
  • Celestron's premium StarBright XLT coatings
  • 3910mm focal length (f/11)
  • 40mm 2" eyepiece included (98x)
  • Visual back allows for use with 2" accessories
  • 9x50 finderscope to help accurately find objects
  • 2" mirror diagonal provides more comfortable viewing position when observing objects that are high in the sky
  • Includes dovetail rail compatible with CGE mount

Optical DesignSchmidt-Cassegrain
Aperture (mm)355.6 mm (14 in)
Focal Length3910 mm (154 in)
Focal Ratio11
Focal Length of Eyepiece 1 (mm)40 mm (1.57 in)
Magnification of Eyepiece 198 x
Star Diagonal1.25
Optical TubeAluminum
Highest Useful Magnification840 x
Lowest Useful Magnification51 x
Limiting Stellar Magnitude15.3
Resolution (Rayleigh)0.39 arc seconds
Resolution (Dawes)0.33 arc seconds
Light Gathering Power (Compared to human eye)2581 x
Secondary Mirror Obstruction4.5 in (114 mm)
Secondary Mirror Obstruction by Diameter32%
Secondary Mirror Obstruction by Area10%
Optical CoatingsStarBright / XLT
Optical Tube Length31 in (787 mm)
Optical Tube Weight45 lbs (20 kg)
Dovetail CompatibilityCGE Mount

Manufacturer Info

Orion Telescopes