Product Description
CELESTRON • C8-A XLT (CGE) 8" Optical Tube Assembly • 91024-XLT
As the larger cousin to the C6-A XLT, the Celestron C8-A XLT has 843x the light gathering power of the human eye which dwarfs smaller telescopes of this scale. As a Schmidt-Cassegrain optical tube assembly, the corrector plate and primary mirrors render a focal ratio of f/10 which makes these type of catadioptric designs excellent for both visual and imaging as well as being compatible with many optical accessories to adjust its field of view and focal length. With the addition of Celestron's own StarBright XLT coatings light transmission has been enhanced as well, making the C8-A XLT great for planetary and terrestrial observing and wide field observing of deep sky objects. One accessory suggested is the Focal Reducer by Celestron (NOT INCLUDED, SOLD SEPARATELY!) will reduce the focal ratio of this optical tube to an f/6.3 which is much faster for observing and imaging deep sky objects, especially when using large pixels on larger CCD chips. For the visual astronomer, they'll be pleased to know this optical tube comes packaged with some accessories including a 25mm eyepieces (for a magnification of 81x), star diagonal, 1.25" visual back, and 6x30 finderscope.
QUICK SUMMARY:
- 8 inch aperture
- f/10 focal ratio
- Schmidt-Cassegrain optical tube
- StarBright XLT Coatings
- 6x30 finderscope
- 1.25" visual back
- 25mm eyepiece
- Star Diagonal
mw/mc715
Specifications
Name | Celestron - C8-A XLT - 8" SCT Optical Tube Assembly for CGE/ CGX Mounts - 91024-XLT |
---|---|
Manufacturer | Celestron |
Model | CEL-91024-XLT |
UPC | 050234102490 |
In The Box | 8” SCT Optical Tube D/ CGE Series Dovetail 25mm Plossl Eyepiece 6x30 Finderscope & Bracket 1.25” Visual Back Star Diagonal |
Aperture | 203.2 mm (8 in) |
Dovetail Compatibility | D Series |
Finderscope | 6x30 |
Focal Length | 2032 mm (80 in) |
Focal Ratio | f/10 |
Highest Useful Magnification | 480 x |
Light Gathering Power | 843 x |
Limiting Stellar Magnitude | 14 |
Lowest Useful Magnification | 29 x |
Optical Coatings | StarBright XLT |
Optical Design | Schmidt-Cassegrain |
Optical Tube | Aluminum |
Optical Tube Length | 17 in (432 mm) |
Optical Tube Weight | 12.5 lbs (5.67 kg) |
Resolution (Dawes) | 0.57 arc seconds |
Resolution (Rayleigh) | 0.69 arc seconds |
Secondary Mirror Obstruction | 2.5 in (64 mm) |
Secondary Mirror Obstruction by Area | 9.77 % |
Secondary Mirror Obstruction by Diameter | 31 % |
Star Diagonal | 1.25 |
Reviews
In the Box
D/ CGE Series Dovetail
25mm Plossl Eyepiece
6x30 Finderscope & Bracket
1.25” Visual Back
Star Diagonal