Menu
Cart 0

Celestron

C11-A XLT Optical Tube Assembly


  • 2,46995

This item is out of stock but you can place an order now and we’ll ship when it becomes available.


Overview

  • 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 choice of D-Style dovetail rail compatible with CGE mount, or V-Style dovetail rail compatible with CG-5 Advanced Series mount

Description

  • 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 choice of D-Style dovetail rail compatible with CGE mount, or V-Style dovetail rail compatible with CG-5 Advanced Series mount

Specifications

Optical Design Schmidt-Cassegrain
Aperture (mm) 279.4 mm (11")
Focal Length 2800 mm (110")
Focal Ratio 10
Focal Length of Eyepiece 1 (mm) 40 mm (1.57")
Magnification of Eyepiece 1 70x
Finderscope 9x50
Star Diagonal 1.25
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 95 mm (3.75")
Secondary Mirror Obstruction by Diameter 34%
Secondary Mirror Obstruction by Area 12%
Optical Coatings StarBright / XLT
Optical Tube Length 610 mm (24")
Optical Tube Weight 27.5 lbs (12 kg)
Dovetail Compatibility CGE Mount

Customer Experiences

Introducing...

 

Our Zero-Risk

Telescope Upgrade Path

For our customers who dream of expanding their horizons and gazing deeper into the night sky, we offer personalized telescope upgrade paths. Learn More> 


Shop For...