| Optical Design |
Schmidt-Cassegrain |
| Aperture |
279.4mm (11") |
| Focal Length |
2800mm (110") |
| Focal Ratio |
f/10 |
| Focal Length of Eyepiece 1 |
40mm (1.57") |
| Magnification of Eyepiece 1 |
70x |
| Finderscope |
9x50 Finderscope with quick release bracket |
| Star Diagonal |
1.25" Star Diagonal |
| 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 |
95mm (3.75") |
| Secondary Mirror Obstruction by Diameter |
34% |
| Secondary Mirror Obstruction by Area |
12% |
| Optical Coatings |
Starbright XLT |
| Optical Tube Length |
610mm (24") |
| Optical Tube Diameter |
312.42mm (12.3") |
| Optical Tube Weight |
65 lbs (29.5 kg) with mount |
| Dovetail |
None |
| Mount Type |
Computerized Altitude-Azimuth Dual Fork Arm |
| Height adjustment range (includes mount and tripod) |
1397mm - 1778mm (55" - 70") |
| Tripod leg diameter |
50.8mm (2") Stainless Steel |
| Mount Head Weight |
65 lbs (29.5 kg) with optical tube |
| Accessory Tray |
Yes |
| Tripod Weight |
19 lbs (8.6 kg) |
| Slew Speed |
9 slew speeds - max speed 5°/second |
| Tracking Rates |
Sidereal, Solar and Lunar |
| Tracking Modes |
Altazimuth, EQ North and EQ South |
| GPS |
Internal 16 channel |
| Dovetail Compatibility |
none |
| Number of Auxiliary ports |
2 Aux ports (Hand Control can use any of the Aux ports) |
| Autoguide port |
Yes |
| USB Port |
Yes, on hand control |
| Power Requirements |
12 VDC-1.5A (Tip positive) |
| Motor Drive |
DC servo motors |
| Alignment Procedures |
Sky Align, Auto Two-Star Align, Two-Star Align, Solar System Align, EQ North Align & EQ South Align |
| Periodic Error Correction |
Yes |
| Computerized Hand Control |
2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 port for PC connection |
| NexStar+ Database |
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects |
| Software |
Celestron's Starry Night Special Edition Software, SkyPortal App |
| Total Telescope Kit Weight |
84 lbs (38.1 kg) |
| Included Items |
Mount/OTA | Tripod | Accessory Tray | 40mm Eyepiece | 1.25" Star Diagonal | 50mm 9x50 Finderscope with Bracket | Instruction Manual |