Perth Observatory
Encyclopedia
The Perth Observatory is the name of two astronomical observatories
Observatory
An observatory is a location used for observing terrestrial or celestial events. Astronomy, climatology/meteorology, geology, oceanography and volcanology are examples of disciplines for which observatories have been constructed...

 located in Western Australia
Western Australia
Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

.

First Perth Observatory

The original Perth Observatory was constructed in 1896 and was officially opened in 1900 by John Forrest
John Forrest
Sir John Forrest GCMG was an Australian explorer, the first Premier of Western Australia and a cabinet minister in Australia's first federal parliament....

, the first premier of Western Australia
Premier of Western Australia
The Premier of Western Australia is the head of the executive government in the Australian State of Western Australia. The Premier has similar functions in Western Australia to those performed by the Prime Minister of Australia at the national level, subject to the different Constitutions...

. The observatory was located at Mount Eliza
Mount Eliza, Western Australia
Mount Eliza is a hill which overlooks the city of Perth, Western Australia and forms part of Kings Park. It is known as Kaarta gar-up and Mooro Katta in the local Noongar dialect....

 overlooking the city of Perth
Perth, Western Australia
Perth is the capital and largest city of the Australian state of Western Australia and the fourth most populous city in Australia. The Perth metropolitan area has an estimated population of almost 1,700,000....

. Its chief roles were keeping Standard Time
Standard time
Standard time is the result of synchronizing clocks in different geographical locations within a time zone to the same time rather than using the local meridian as in local mean time or solar time. Historically, this helped in the process of weather forecasting and train travel. The concept...

 for Western Australia and meteorological data collection.

William Ernest Cooke
William Ernest Cooke
William Ernest Cooke , generally referred to as "W. Ernest Cooke" or informally "Ernest Cooke", was an Australian astronomer, credited with a number of important scientific breakthroughs and improved methodologies in astronomical observations and star cataloguing...

 was appointed the first government astronomer in 1896 after a similar posting at the Adelaide Observatory. On arrival in Perth, his first task was to determine the exact latitude and longitude of the colony. He was also able to determine the time of day with greater accuracy. Before his arrival clocks could vary by up to half an hour. The time
Time signal
A time signal is a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day.-Audible and visible time signals:...

 was announced each day by a cannon still present on the grounds. The design was by the government architect, George Temple-Poole
George Temple-Poole
George Thomas Temple-Poole was a British architect and public servant, primarily known for his work in Western Australia from 1886....

, and features a bold combination of styles
Australian architectural styles
Australian architectural styles, like the revivalist trends which dominated Europe for centuries, have been primarily derivative.-Background:...

.

Cooke's successor was H.B. Curlewis who wrote in 1929:
Since the prevailing winds blow over the huge extent of King's Park, its excellence for astronomical work is not impaired by its proximity to the city, as is so often the case with other observatories. ...A glance from the tower, from which a wonderful panorama of Perth may be obtained, shows that no growth of the city can ever adversely affect observing conditions

Earthquake records

As an earthquake
Earthquakes in Western Australia
Western Australia has had a regular history of earthquakes throughout its geological history.During European occupation — and since the science of seismology has developed — some earthquakes are better known due to their impact on urban areas....

 observatory in Perth a Milne-Shaw seismograph
John Milne
For other uses, see John Milne .John Milne was the British geologist and mining engineer who worked on a horizontal seismograph.-Biography:...

 was utilised between 1923 and 1959 for the recording of earthquakes in Western Australia. After 1959 the earthquake monitoring was taken up by the Mundaring Geophysical Observatory
Mundaring, Western Australia
Mundaring is a suburb located 34 km east of Perth on the Great Eastern Highway. The suburb is located within the Shire of Mundaring.The Aboriginal name of the area 'Mindah-lung', said to mean 'a high place on a high place', was anglicised to become 'Mundaring'.The Mundaring area is also considered...

.

New building

In the 1960s light pollution from the city of Perth
Perth, Western Australia
Perth is the capital and largest city of the Australian state of Western Australia and the fourth most populous city in Australia. The Perth metropolitan area has an estimated population of almost 1,700,000....

 forced the relocation of the observatory to its current site at Bickley near Mount Gungin in the Darling Range. Construction of the new observatory cost $600,000 and was opened in 1966.

Currently the observatory is involved in Near Earth Asteroid Tracking
Near Earth Asteroid Tracking
Near-Earth Asteroid Tracking is a program run by NASA and Jet Propulsion Laboratory to discover near-Earth objects. The NEAT project began in December 1995 and ran until April 2007.-History:...

 (NEAT). The Minor Planet Center
Minor Planet Center
The Minor Planet Center operates at the Smithsonian Astrophysical Observatory , which is part of the Center for Astrophysics along with the Harvard College Observatory ....

 credits some asteroid
Asteroid
Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...

 discoveries to Perth Observatory.

The observatory has fought off several attempts to close the facility by the State Government
Government of Western Australia
The formation of the Government of Western Australia is prescribed in its Constitution, which dates from 1890, although it has been amended many times since then...

, the most serious being in 1987 when it was part of the Department of State Services. An outcry from the public, scientific and amateur communities was helpful in retaining the observatory. In January 1996, the centenary of its foundation, the observatory was transferred to the Department of Conservation and Land Management, now part of the Department of Environment and Conservation
Department of Environment and Conservation
The Department of Environment and Conservation is a department of the Government of Western Australia that is responsible for implementing the state's conservation and environment legislation and regulations...

.

In 2005 the Bickley site was Heritage listed, being Australia's oldest continuing operating observatory and Australia's only remaining State Government operated astronomical observatory.

Publication

  • Western Australian astronomy almanac. Bickley, W.A. Perth Observatory. ISBN 0-9581963-6-2 (2007 edition)

External links

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