GMRT Antenna Specification
Giant Metrewave Radio Telescope
| Specifications | |
|---|---|
| Parabolic Reflector Diameter | 45 m |
| Focal Length | 18.54 m |
| Physical aperture | 1590 m² |
| Sensitivity of single dish | 0.3 K/Jy |
| Feed Support | Quadrupod |
| Mounting | Altitude-azimuth |
| Elevation Limits | Software Limit 17–90 degrees |
| Hardware Limit 15–110 degrees | |
| Azimuth Limits | Software Limit –265 to +265 degrees |
| Hardware Limit –270 to +270 degrees | |
| Slew rate | Azimuth 30°/minute |
| Elevation 20°/minute | |
| Design wind speeds | Operation up to 40 km/h |
| (3 sec peak at 10 m height) | Slew up to 80 km/h |
| Survival 133 km/h | |
| Size of wire mesh of | 20×20 mm, outer 1/3 area |
| Reflecting surface | 15×15 mm, middle 1/3 area |
| 10×10 mm, inner 1/3 area | |
| Maximum rms surface errors | 20 mm, outer 1/3 area |
| At wind speed of 40 km/h | 12 mm, middle 1/3 area |
| 08 mm, inner 1/3 area | |
| Tracking and pointing accuracy | 1′ rms at wind speeds |
| < 20 km/h |
