Melbourne Observatory


Melbourne Observatory
The Melbourne Observatory viewed from the Shrine of Remembrance.
Melbourne Observatory Building & Astrograph House

Melbourne Observatory was founded in 1862 to serve as a scientific research institution for the rapidly growing city of Melbourne, the capital of the colony of Victoria. The observatory was tasked by the Victorian government with maintaining an accurate time reference for the colony through observations of stars using a transit telescope as well as general astronomical research. The site chosen was a gentle hill adjacent to the Royal Botanic Gardens.

Shortly after founding a 48-inch (1,200 mm) telescope was installed at the observatory for astronomical research and for a while it was the largest fully steerable telescope in the world. This instrument was referred to as the "Great Melbourne Telescope".

In 1874 the observatory took part in the worldwide effort to observe the Transit of Venus in order to better determine the distance of Earth to the Sun.

Towards the end of the 1880s the observatory took part in the international "Carte du Ciel" project to map the heavens using the, then novel, technique of photography. Being the most southerly of the sites taking part, Melbourne was assigned the region around the south celestial pole south of declination -65°.

With the coming of federation in 1901 the Commonwealth government was assigned the responsibility for astronomy and time-keeping and control of the observatory was gradually handed over by the state government. At the same time, the encroaching light pollution from the growing city of Melbourne gradually made quality astronomical observations increasingly difficult. Then, in 1933 the flood-lit Shrine of Remembrance was completed in the parkland adjacent to the observatory impacting its skies further, until the observatory was finally closed in 1945. Most of the scientific equipment and instruments, including the Great Melbourne Telescope, were sold or moved elsewhere.

Today, while most of the original buildings still stand on the site, only two of the original instruments remain. Both were installed in 1874 to observe the transit of Venus. One is an 8-inch (200 mm) refracting telescope by Troughton and Simms of London, and the other is a fully restored 4-inch (100 mm) Photoheliograph by Dallmeyer of London. The Photoheliograph is privately owned and on indefinite loan to the Astronomical Society of Victoria. The building which was used by the 13-inch (330 mm) astrograph telescope for the "Carte du Ciel" survey now houses a 12-inch (300 mm) Newtonian reflector telescope owned by the Astronomical Society of Victoria.

References

Coordinates: 37°49′47″S 144°58′32″E / 37.8297°S 144.9755°E / -37.8297; 144.9755



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