T. Hara et al., A 3.8 M IMAGING CHERENKOV TELESCOPE FOR THE TEV GAMMA-RAY ASTRONOMY COLLABORATION BETWEEN JAPAN AND AUSTRALIA, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 332(1-2), 1993, pp. 300-309
A 3.8 m telescope for very high energy gamma-ray astronomy was install
ed near Woomera, South Australia in 1991 and started operation in 1992
. The construction and operation of the 3.8 m telescope is described,
showing the characteristics of the experimental apparatus, such as the
electronics circuits and the phototube camera. The field of view of t
he camera is of 3-degrees diameter, consisting of 220 pixels with each
pixel viewing a 0.12-degrees x 0.12-degrees area of the sky. Analysis
of acquired data shows the expected features of Cherenkov light from
air showers, and it is concluded that the telescope is operating as an
imaging Cherenkov telescope. We estimate that the energy threshold fo
r gamma-rays is about 1 TeV.