VLA Antenna Specifications
Antenna specifications: Type: Offset cassegrain with asymmetric subreflector Mount: Altitude - Azimuth Focal Ratio: f/.35 Total Weight: 235 Tons Total Height: 29 Meters (94 ft.) when pointed straight up Dish Diameter: 25 Meters (82 ft.) Drive System: 4 Electric motors (2 per axis) Range of Motion: 540 degrees azimuth, 120 degrees elevation Tracking Accuracy: 15 arc seconds in winds up to 18 mph Foundations: Height above track 1.9 Meters (6ft. 4in.) Depth below track 9.7 Meters (32ft.) Submitted by: Eric Goodill