Abstract

We describe, briefly, a large array of 30 antennas of 45 m diameter steerable parabolic dishes called the Giant Metrewave Radio Telescope (GMRT), set up in western India. Commissioned for international use in 2002, GMRT has been at the forefront of low frequency radio astronomy research (< 1500 MHz). A large number of papers in such diverse topics such as Our galaxy, Pulsars, Sun and extragalactic work on radio galaxies, quasars in continuum and spectral line have been published, based on GMRT observations. Here we describe the GMRT, its feed systems and a sample of the images being obtained and also outline the problems such as radio interference, ionospheric disturbances, etc encountered generally at these frequencies (from 150 to 1500 MHz), which affect the images.

The presentation (PDF)