Menu
Cart 0

Celestron

C9 1/4-A XLT Optical Tube Assembly


  • 1,46995

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


Overview

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

Description

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