The Molongolo Cross Telescope was a 408 MHz radio telescope built by Bernard Mills and collaborators and operated by the University of Sydney. The telescope consisted of a North-South arm and an East-West arm in a cross shape. It was used for a survey of the Southern sky with a resolution of 2.8 arcmin. The East-West arm was split into 88 individual elements and is now used as a full earth-rotation synthesis instrument called the Molonglo Observatory Synthesis Telescope.