About the Celestron C8-A-XLT Schmidt Cassegrain Optical Tube Assembly...
Celestron Telescope Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually to be used with your favorite mount. Each Celestron C8-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 Celestron Telescope 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 Celestron Telescope Mounts and Tripods.
The Celestron C8 is Celestron''s first new Schmidt-Cassegrain optical system in over a decade. The new 8" Schmidt-Cassegrain Celestron Telescope features a precision optical system with 2032mm focal length (f/10) and comes standard with Celestron''s StarBright XLT coatings at no extra cost.
What'''s more, you have Celestron Telescope'''s guarantee of uncompromising quality backed up with a two year warranty. They warrants your Celestron C8-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 C8-A-XLT Schmidt Cassegrain Optical Tube Assembly Features...
- 2032 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 C8-A-XLT Schmidt Cassegrain Optical Tube Assembly Specifications...
Optical Design: Schmidt-Cassegrain
Aperture (mm): 203.2 mm (8 in)
Focal Length (mm): 2032 mm (80 in)
Focal Ratio: f/10
Eyepiece 1 (mm): 25 mm (0.98 in)
Magnification 1: 81 x
Star Diagonal: 1.25
Optical Tube: Aluminum
Highest Useful Magnification: 480 x
Lowest Useful Magnification: 29 x
Limiting Stellar Magnitude: 14
Resolution (Rayleigh): 0.69 arc seconds
Resolution (Dawes): 0.57 arc seconds
Light Gathering Power (Compared to human eye): 843 x
Secondary Mirror Obstruction: 2.5 in (64 mm)
Secondary Mirror Obstruction by Diameter: 31 %
Secondary Mirror Obstruction by Area: 9.77 %
Optical Coatings: StarBright XLT
Optical Tube Length: 17 in (432 mm)
Optical Tube Weight: 12.5 lbs (5.67 kg)
Dovetail Compatibility: CG-5 MountCelestron Product Number: 91020-XLT