Radio dish from One Mile Telescope at Cambridge, 1964.
© Science Museum / Science & Society Picture Library
Model of one of three radio dishes forming the 'One Mile Telescope' (OMT). Built at Lords Bridge near Cambridge in 1964, the three dishes form a radio interferometer with a baseline of around a mile (1.6 km). Signals collected by the three radio telescopes are combined using a technique called 'aperture synthesis'. This gives a radio picture of the object being observed at a resolution that is equivalent to using a radio telescope one mile in diameter. Sir Martin Ryle, a pioneer of radio astronomy, developed the OMT and in 1957 established radio astronomy at Cambridge University. This telescope and other instruments now form the Mullard Radio Astronomy Observatory at Cambridge.