The Anglo-Australian Telescope (AAT), which was opened in 1974 by HRH Prince Charles, is operated by the Australian Astronomical Observatory (AAO), which is a division of the Department of Industry, Innovation and Science.
The AAT is an equatorially-mounted telescope and, with a 3.9m-diameter mirror, is the largest optical telescope in Australia. It is equipped with a robotic spectrograph it can simultaneously observe hundreds of galaxies and stars. It has also been used to carry out several important southern sky surveys, including the 2-degree-field Galaxy Redshift Survey (2dfGRS), and plays an important role in the search for planets around other stars.
Visit the webpage of the Australian Astronomical Observatory for more information.