Khan Scope Centre

About the Celestron C6-A-XLT Schmidt Cassegrain Optical Tube Assembly...

Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually to be used with your favorite mount. Each Celestron C6-A-XLT is made to the same exacting standards as those used on all their high quality telescopes. All optical surfaces are coated with StarBright XLT coatings. These tube assemblies are equipped with the same dovetail mounting bar as used on the CG-5 series for easy attachment to a variety of popular mounts.

The Celestron C6 is Celestron''s first new Schmidt-Cassegrain optical system in over a decade. The new 6" Schmidt-Cassegrain features a precision optical system with 1500mm focal length (f/10) and offers 40% more light gathering than a 5" telescope and come standard with Celestron''s StarBright XLT coatings at no extra cost.

What''s more, you have Celestron''s guarantee of uncompromising quality backed up with a two year warranty. They warrants your Celestron C6-A-XLT Schmidt-Cassegrain OTA to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship.

Celestron C6-A-XLT Schmidt Cassegrain Optical Tube Assembly Features...

1500 mm focal length (f/10).
25 mm eyepiece included (60x).
Aluminum Optical Tube
Celestron''s premium StarBright XLT coatings.
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 dovetail rail compatible with CG-5 Advanced Series mount

Celestron C6-A-XLT Schmidt Cassegrain Optical Tube Assembly Specifications...

Optical Design: Schmidt-Cassegrain
Aperture (mm): 150 mm (5.91 in)
Focal Length (mm): 1500 mm (59 in)
Focal Ratio: f/10
Eyepiece 1 (mm): 25 mm (0.98 in)
Magnification 1: 60 x
Finderscope: 6x30
Star Diagonal: 1.25
Optical Tube: Aluminum - black
Fastar Compatible: No
Highest Useful Magnification: 354 x
Lowest Useful Magnification: 21 x
Limiting Stellar Magnitude: 13.4
Resolution (Rayleigh): 0.93 arc seconds
Resolution (Dawes): 0.77 arc seconds
Light Gathering Power (Compared to human eye): 459 x
Angular Field of View (deg): .83
Linear Field of View (@1000 yds): 44 ft (13 m)
Secondary Mirror Obstruction: 2.2 in (56 mm)
Secondary Mirror Obstruction by Diameter: 37 %
Secondary Mirror Obstruction by Area: 14 %
Optical Coatings: StarBright XLT
Optical Tube Length: 16 in (406 mm)
Optical Tube Weight: 10 lbs (4.54 kg)
Dovetail Compatibility: CG-5 Mount
Celestron Product Number: 91010-XLT