Introduction

The Giant Meterwave Radio Telescope (GMRT) is a sensitive aperture synthesis radio telescope array operating in the frequency range 30$-$1500 MHz. The GMRT is about 110 km east of Mumbai and 80 km north of Pune. The site co-ordinates are :

latitude  = 19 deg 05 min 48 sec North,
longitude = 74 deg 03 min 00 sec East,
altitude  = 650 m.

The array consists of two main parts: a central array of 14 antennas which are labeled, C# (e.g. C00, C01, ..., C14), and an outer Y consisting of 14 km long East, West, and South arms (labeled E#, W#, and S#, respectively). There are 5 antennas on each of the east and south arms and 6 antennas on the west arm.

The elevation limit of the array has currently been set to 17$-$90 degrees (software limit), giving a declination range coverage from $-$53 to $+$90 degrees.