Telescope Structure:
-Moving Mass: 342 Metric Tonnes/377 US Tons
Azimuth Structure: 170 Metric Tonnes/187 US Tons
Altitude Structure: 172 Metric Tonnes/190 US Tons
-Drive motors:
Azimuth: 8, 2.68 HP (2 kilo-Watt) Brushless DC motors
Altitude: 4, 2.68 HP (2 kilo-Watt) Brushless DC motors
-Encoding Precision: Optical tape encoder resolves to 5 milliarc seconds with an
accuracy of 20 milliarc seconds
-Blind Pointing Accuracy: 1-3 arc seconds RMS*
-Tracking Stability: 0.01 arcsec RMS (closed loop)
-Maximum Slew Rate: 2 degrees/second in Azimuth, 0.75 degrees/second in Elevation
-Zenith Blind Spot Size: 0.5 degrees
-Primary Mirror Elevation: 20 meters above ground level
-Azimuth Track Size & Precision: 10 meters/32.8 feet diameter (world’s largest single
piece) 25 micron precision over entire 10 meter surface
-Azimuth Range of Motion: +/- 270 degrees for total of 540 degrees of total rotation
*RMS = Root Mean Square – An analysis method that (in this case) specifies the precision with which the telescope can find a specific point on the sky.