NCRA has set up a unique facility for radio astronomical research using the metrewavelengths range of the radio spectrum, known as the Giant Metrewave Radio Telescope (GMRT), it is located at a site about 80 km north of Pune.

GMRT consists of 30 fully steerable gigantic parabolic dishes of 45m diameter each spread over distances of upto 25 km.

Configuration :

ANTENNA CONFIGURATION : The number and configuration of the dishes was optimized to meet the principal astrophysical objectives which require sensitivity at high angular resolution as well as ability to image radio emission from diffuse extended regions.

Fourteen of the thirty dishes are located more or less randomly in a compact Central Array in a region of about 1 sq km.

The remaining sixteen dishes are spread out along the 3 arms of an approximately `Y'-Shaped configuration over a much larger region, with the longest interferometric baseline of about 25 km.

The highest angular resolution achievable will range from about 60 arcsec at the lowest frequencies to about 2 arcsec at 1.4 GHz.

Electronic Frontends and Backends

: Apart from the novel low-cost design of the parabolic dishes, the instrument has state-of-the-art electronics systems developed indigenously and consisting of the following main sub units.


Antenna feeds at six different frequency bands between 50 MHz and 1500 MHz, having good polarization characteristics as well as simultaneous multiband operation.

Low-noise amplifiers, local oscillator synthesizers, mixers, IF amplifiers.

A digital 2,30,000-channel FX-type correlator providing upto 128 spectral channels and covering a maximum bandwidth of 32 MHz




For more details you may Contact to the National Centre for Radio Astrophysics
Tata Institute of Fundamental Research the contact details Are given below

Contact details :

National Centre for Radio Astrophysics
Tata Institute of Fundamental Research
Pune University Campus, Post Bag 3,
Ganeshkhind P.O., Pune 411 007
Maharashtra, INDIA
Tel: +91 20 25719000, +91 20 25719111