Anglo-Australian Observatory (AAO)
An observatory at the Siding Spring Observatory site in New South Wales, Australia, funded jointly by the governments of Australia and the UK. The observatory is administered by the Anglo-Australian Telescope Board (AATB), which was set up in the early 1970s when the 3.9-metre (150-inch) Anglo-Australian Telescope was constructed. In 1988, the AATB took over operational responsibility for the 1.2-metre (48-inch) UK Schmidt telescope, which has been at the site since 1973, and it also became a fully shared facility at that time. Widely regarded as one the finest instruments of its type, the Schmidt takes high-quality, wide-angle photographs, 6.4° square, and much of its observing time is dedicated to long-term surveys.