Celestron C11-A XLT (CGE) Optical Tube Assembly
Article number: | 91036-XLT |
Availability: | Order Now! |
Delivery time: | More on the Way to Us |
General Features
- 11" Schmidt-Cassegrain Optical Tube Assembly
- Aluminum Optical Tube
- Celestron's premium StarBright XLT coatings
- 2800 mm focal length (f/10)
- 40 mm eyepiece included (70x)
- Visual back allows for use with 1.25" accessories
- 9x50 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
Specifications
Optical Design | Schmidt-Cassegrain |
---|---|
Aperture (mm) | 279.4 mm (11 in) |
Focal Length | 2800 mm (110 in) |
Focal Ratio | 10 |
Focal Length of Eyepiece 1 (mm) | 40 mm (1.57 in) |
Magnification of Eyepiece 1 | 70 x |
Finderscope | 9x50 |
Star Diagonal | 1.25 |
Optical Tube | Aluminum |
Highest Useful Magnification | 660 x |
Lowest Useful Magnification | 40 x |
Limiting Stellar Magnitude | 14.7 |
Resolution (Rayleigh) | 0.5 arc seconds |
Resolution (Dawes) | 0.42 arc seconds |
Light Gathering Power (Compared to human eye) | 1593 x |
Secondary Mirror Obstruction | 3.75 in (95 mm) |
Secondary Mirror Obstruction by Diameter | 34% |
Secondary Mirror Obstruction by Area | 12% |
Optical Coatings | StarBright / XLT |
Optical Tube Length | 24 in (610 mm) |
Optical Tube Weight | 27.5 lbs (12 kg) |
Dovetail Compatibility | CGE Mount |