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CSIRO's Parkes radio telescope is a 64-m diameter parabolic dish used for radio astronomy.The telescope was built in 1961, but only its basic structure has remained unchanged. The surface, control system, focus cabin, receivers, computers and cabling have all been upgraded - some parts many times - to keep the telescope current.
The telescope is now ten thousand times more sensitive than when commissioned in 1961.Radio Telescope at Parkes New South Wales Australia