Celestron C8 XLT CGE OTA
Reference 91024
£1,375.00 VAT inc
Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount
- 8″ Schmidt-Cassegrain Optical Tube Assembly
- Aluminum Optical Tube
- Celestron’s premium StarBright XLT coatings
- 2032 mm focal length (f/10)
- 25 mm eyepiece included (81x)
- Visual back allows for use with 1.25″ accessories
- 6×30 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 CGE mount
Delivery In 1-5 Days
Our Description
|
Optical Design
|
Schmidt-Cassegrain |
|---|---|
|
Aperture (mm)
|
203.2 mm (8 in) |
|
Focal Length
|
2032 mm (80 in) |
|
Focal Ratio
|
10 |
|
Focal Length of Eyepiece 1 (mm)
|
25 mm (0.98 in) |
|
Magnification of Eyepiece 1
|
81 x |
|
Finderscope
|
6×30 |
|
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
|
CGE Mount |
With any Cassegrain telescope you will have to consider the affect dew fall. The cheapest solution is a lens hood but when dew is a real problem then heater straps will evaporate dew off.
Features
Reference: 91024
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