In 1951, UCL took over management of the Observatory from the University of London, and over the next ten years added library, lecture, and laboratory space.
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The Observatory was opened on 8 October 1929 by the then Astronomer Royal Frank Watson Dyson, initially to house the 24-inch reflector from Dr W.E. Wilson's observatory at Daramona, Ireland, which was donated to the University of London after his death.
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