GMRT Antenna Specifications
The GMRT specifications
Specifications | |
Parabolic Reflector Diameter | 45m |
Focal Length | 18.54 m |
Physical aperture | 1590 m |
Sensitivity of single dish | 0.3 KJy |
Feed Support | Quadrupod |
Mounting | Altitude-azimuth |
Elevation Limits | Software Limit 1790 degrees |
Hardware Limit 15110 degrees | |
Azimuth Limits | Software Limit 265 to +265 degrees |
Hardware Limit 270 to +270 degrees | |
Slew rate | Azimuth 30 degree/minute |
Elevation 20 degree/minute | |
Design wind speeds | Operation upto 40 km/h |
(3 sec peak at 10 m height) | Slew upto 80 km/h |
Survival 133 km/h | |
Size of wire mesh of | 2020 mm, outer 1/3 area |
reflecting surface | 1515 mm, middle 1/3 area |
1010 mm, inner 1/3 area | |
Maximum rms surface errors, | 20 mm, outer 1/3 area |
at wind speed of 40 kmph | 12 mm, middle 1/3 area |
08 mm, inner 1/3 area | |
Tracking and pointing accuracy | 1 rms at wind speeds |
of <$" src="http://gmrt.ncra.tifr.res.in/gmrt_hpage/Users/doc/manual/UsersManual/img15.gif" /> 20 km/h |
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