The Sir Thomas Brisbane Planetarium is located on the grounds of the Brisbane Botanic Gardens in the suburb of Toowong, Brisbane, Queensland, Australia. The Planetarium was officially opened on 24 May 1978. The Planetarium is named after Sir Thomas Brisbane, governor of the colony of New South Wales (1821 - 1825) and well known Scottish astronomer who established the first significant observatory at Parramatta, Australia, in 1822 for mapping the southern skies.