Celestron
USED - C11-A XLT Optical Tube Assembly w/ Hyperstar
- Regular price
-
$ 4,999.95 - Sale price
- $ 3,475.95
- Unit price
- per
Only 1 Left!
In StockUSED GEAR INFORMATION
This telescope is in good condition. The optical surfaces appear in good condition. Includes a Celestron Dew heater ring (installed), Celestron flexible dew shield, 0.63x reducer/corrector, 1.25" visual back, 1.25" star diagonal, T-adapter, ZWO EAF, Telrad finder base, Tri-Bahtinov mask, and aftermarket Losmandy dovetails. OTA only, mount not included.
Hyperstar for C11 includes Hyperstar, 2" M54 filter drawer, front and back caps, and secondary mirror holder.
This is a large and bulky item, so we recommend an in-person pickup. If you choose to have it shipped there may be additional charges not calculated at checkout.
Product Description
- 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 choice of D-Style dovetail rail compatible with CGE mount, or V-Style dovetail rail compatible with CG-5 Advanced Series mount
Specifications
| Optical Design | Schmidt-Cassegrain |
| Aperture (mm) | 279.4 mm (11") |
| Focal Length | 2800 mm (110") |
| Focal Ratio | 10 |
| Focal Length of Eyepiece 1 (mm) | 40 mm (1.57") |
| Magnification of Eyepiece 1 | 70x |
| Finderscope | 9x50 |
| Star Diagonal | 1.25 |
| Optical Tube | Aluminum |
| Highest Useful Magnification | 660x |
| Lowest Useful Magnification | 40x |
| Limiting Stellar Magnitude | 14.7 |
| Resolution (Rayleigh) | 0.5 arc seconds |
| Resolution (Dawes) | 0.42 arc seconds |
| Light Gathering Power (Compared to human eye) | 1593x |
| Secondary Mirror Obstruction | 95 mm (3.75") |
| Secondary Mirror Obstruction by Diameter | 34% |
| Secondary Mirror Obstruction by Area | 12% |
| Optical Coatings | StarBright / XLT |
| Optical Tube Length | 610 mm (24") |
| Optical Tube Weight | 27.5 lbs (12 kg) |
| Dovetail Compatibility | CGE Mount |
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