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 |