Monday, January 28, 2013

High Altitude Gamma Ray Telescopes (HAGAR)

High Altitude Gamma Ray Telescopes at Indian Astronomical Observatory, Hanle

High Altitude Gamma Ray Telescope, HAGAR is an Atmospheric Cerenkov experiment with 7 telescopes, each with 7 mirrors of total area of 4.4 square meters, the total light gathering area of 7 telescopes is thus 31 square meters. The telescopes are deployed on the periphery of a circle of radius 50 meters with one telescope at the center. Each telescope has alt azimuth mounting. Each of the 7 mirrors in each telescope is looked at by a UV sensitive PhotoMultiplier Tube.