C8 OPTICAL TUBE ASSEMBLY (CGE DOVETAIL) - SKU# 91024-XLT

by Celestron
Save 39%
$1,816.95
$1,099.95
  • 8" Schmidt-Cassegrain optical tube assembly (OTA)
  • Features Celestron's premium patented  StarBright XLT coatings
  • 2032 mm focal length (f/10)
  • Fastar compatible
  • Tube constructed of durable and lightweight aluminum
  • Includes: 25mm eyepiece (81x), 6x30 optical finderscope, star diagonal, 1.25” visual back, CGEM style dovetail bar

The views are much more impressive than what you’d expect from such a compact instrument. The tube offers 2032 mm of focal length and a focal ratio of f/10.

The Celestron C8-A can be mounted on a multitude of computerized telescope mounts thanks to its CGEM style dovetail bar. This iconic optical tube provides the best balance of portability, handling ease, light gathering ability and price ever offered to the amateur astronomer.

 

Fastar Technology

With Fastar, the SCT’s secondary mirror can be removed and replaced with a field-flattening lens assembly (sold separately by third party manufacturers) so that a CCD camera can be used in the front of the telescope at the f/2 focus of the instrument’s primary mirror. The potential of the Fastar system is staggering: exposures are 25 times shorter than if the camera was placed at the instrument’s native f/10 focus.

 

StarBright XLT coatings

StarBright XLT is Celestron’s revolutionary optical coating system. It consistently outperforms all other coatings in the commercial telescope market.

Specifications

OPTICAL TUBE INFO:
Optical Design: Schmidt-Cassegrain
Aperture: 203.2mm (8")
Focal Length: 2032mm (80")
Focal Ratio: f/10
Focal Length of Eyepiece 1: 25mm (0.98")
Magnification of Eyepiece 1: 81x
Finderscope: 6x30
Star Diagonal: 1.25" Star Diagonal
Optical Tube: Aluminum
Highest Useful Magnification: 480x
Lowest Useful Magnification: 29x
Limiting Stellar Magnitude: 14
Resolution (Rayleigh): 0.69 arc seconds
Resolution (Dawes): 0.57 arc seconds
Light Gathering Power (Compared to human eye): 843x
Secondary Mirror Obstruction: 64mm (2.5")
Secondary Mirror Obstruction by Diameter: 31%
Secondary Mirror Obstruction by Area: 9.77%
Optical Coatings: StarBright XLT
Optical Tube Length: 432mm (17")
Optical Tube Diameter: 238mm (9.37")
Optical Tube Weight: 12.5 lbs (5.67 kg)
Dovetail: CGE Dovetail Bar
Solar Warning
  • Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result.
  • Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
  • Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.

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