The Australia Telescope Compact
Array (ATCA), is located at the Paul Wild Observatory near Narrabri, some
550 km northwest of Sydney. Displayed are five of the six 22-m
Cassegrain
antennas, here arranged
in one of the hybrid configurations which include two antennas on the
North-South spur. The ATCA is a radio interferometer with maximum baselines
of 6 km, working in the 1 - 100 GHz frequency range. Its supercomputer, the
Compact Array Broadband Backend (CABB), is described in this paper
by Wilson,
Ferris, et al. 2011 (MNRAS 416, 832).