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One of the world's quietest radio astronomy sites

Inyarrimanha Ilgari Bundara, our Murchison Radio-astronomy Observatory is one of the best locations in the world to operate telescopes that listen for radio signals from space.

Our observatory in the heart of Wajarri Country in remote Western Australia is home to our ASKAP radio telescope as well as other international radio astronomy projects. We currently host the Curtin University-led Murchison Widefield Array (MWA) and Arizona State University's Experiment to Detect the Global Epoch of Reionization Signature (EDGES) instrument.

We're also preparing the site for one of the two telescopes of the SKA Observatory (SKAO). The SKAO is a global collaboration to build and operate the SKA telescopes, together the world’s largest and most capable radio telescopes. They promise to answer some of the biggest questions about our Universe, and the the SKA-Low telescope is currently under construction at our observatory site.  

Radio telescopes at the observatory detect radio waves at similar frequencies to digital TV broadcasts and 4G mobile networks. This means that the telescopes must be located a long way from human settlements, so that terrestrial signals don’t interfere with the weaker signals coming from natural sources in space. This is why the site is one of the best places in the world for radio astronomy.

Indigenous Land Use Agreement

Aboriginal Australians are Australia’s first astronomers and share a long-standing knowledge of the sky. Many partners have come together to create an Indigenous Land Use Agreement (ILUA) for the observatory to operate on Wajarri Country, and to ensure educational, social and economic benefits flow to the Traditional Owners and native title holders of the site, the Wajarri Yamaji.

We are grateful to the Wajarri Yamaji for partnering with us in establishing the observatory on Country and for the support they have shown as we work together towards furthering astronomical knowledge from their ancient lands.

In 2022 a new ILUA with the Wajarri Yamaji was signed. Negotiated over many years, the new ILUA allows construction of the SKA-Low telescope on an expanded observatory, provides benefits for the Wajarri community and protects Wajarri cultural heritage alongside the construction and operation of the telescopes.

The first outcome from the new ILUA for the site is our new dual name, Inyarrimanha Ilgari Bundara, the CSIRO Murchison Radio-astronomy Observatory. Inyarrimanha ilgari bundara means 'sharing sky and stars' in the Wajarri language. It represents the deep connection to sky and Country held by the Wajarri Yamaji as well as sharing their sky and stars with the global astronomy community by hosting these world-leading radio telescopes on Country. 

Radio quiet zone

The Australian and Western Australian Governments have established a ‘radio quiet’ zone to protect this unique radio astronomy site from noise created by modern life.

The zone is an area 520km in diameter, centred on the observatory, in which licenced communications and electronic devices such as television transmitters, mobile telephones base stations and CB radios are controlled to limit electromagnetic interference to the radio telescopes on site.

World-leading radio astronomy in the Aussie outback

See all the innovative technology that we’ve brought together to create Inyarrimanha Ilgari Bundara, our Murchison Radio-astronomy Observatory on Wajarri Country in the remote mid-west region of Western Australia.

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[Image shows a starry sky with a spinning earth globe, which zooms in on Western Australia. Concentric blue lines move around a point, and text appears: Murchison Radio Astronomy Observatory]

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[Image changes to show a series of telescopes and the text appears: CSIRO’s Australian SKA Pathfinder telescope, Surveying the structure and evolution of the universe]

[Image changes to show the telescopes from directly above, then shows two vehicles driving between the telescopes]

[Image changes to follow the two vehicles, then focuses on the telescopes]

[Image changes to show a closer image of the telescope, and the text appears: Equipped with wide-field phased array receivers, CSIRO technology surveying the sky faster than ever before]

[Image changes to show the landscape with the telescopes]

[Image changes to show tracks on a desert landscape with two vehicles, then changes to show a checkerboard pattern installation of small telescopes]

[Image changes to show a closer view of the small telescopes and the text appears: Murchison Widefield Array (MWA) 4096-dipole antenna low-frequency telescope]

[Image shows the camera scanning around the telescopes and then zooms in on one telescope]

[Image changes to show a man’s face, and then changes to show the small telescopes]

[Image changes to show a signpost and text appears: MWSA has helped map more than 300,000 galaxies]

[Image changes to show a view from above, and then zooms further to show the entire installation]

[Image changes to show a complex of buildings and text appears: MRO Control Building, High tech custom supercomputing facility]

[Image changes to focus on one building, then an image appears of a woman walking through the door of the building]

[Image changes to show man walking along a corridor of glass doors, and passing through a door]

[Image changes to show bundled data cables connected to a blue grid, then zooms out to show stacks of similar objects]

[Image changes to show a vehicle driving towards a large solar array power station, and text appears: MRO Solar Hybrid Power Station, Astronomy’s first major hybrid energy system]

[Image changes to show the solar panels, and the camera pans along the panels]

[Image changes to show a shipping container, and text appears: One of Australia’s largest lithium-ion batteries (2.5MWh) Renewable energy storage – maximising the use of renewable power]

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[Image changes to show an aerial view of the battery site, then change to show a vehicle moving towards a circular pattern of antennae. Text appears: ‘AAVS’ Antenna Test Platform, Testing the next generation of telescope technology]

[Image changes to show two men walking amongst an array of base plate rings on the ground, then shows the two men working on a triangular antenna above a ring]

[Image changes to show an array of triangular antennae, and text appears: New antenna and software technology will pave the way for the Square Kilometre Array telescope]

[Images pan through of two men working on the antennae, an aerial view of the site, and a series of completed antennae. Text appears: Square Kilometre Array, 131,000 antennas build in Australia from 2020 along with hundreds of dish antennas in South Africa]

[Image changes to pan across a series of square kilometre array antennas dotting the landscape around a telescope]

[Image changes to show the blue sky, and then shows a starry sky]

[Image changes to show the Square Kilometre Array logo, the CSIRO logo, the International Centre for Radio Astronomy Research Logo, the Australian Government logo and the Western Australian logo]

[Text appears: We acknowledge the Wajarrai Yamaji as the traditional owners of the Murchison Radio-astronomy Observatory (MRO) site. The MRO and the Australian SKA Pathfinder (ASKAP) telescope are managed and operated by CSIRO – www.csiro.au. The Murchison Widefield Array (MWA) telescope is an international collaboration led and operated by Curtin University – mwatelescope.org. The ‘AAVS’ test platform is an initiative of the Aperture Array Design and Construct (AADC) SKA consortium hosted by the MWA – skatelescope.org/lfaa. The international Centre for Radio Astronomy Research (ICRAR) is a joint venture between Curtin University and the University of Western Australia]

Our Murchison Radio-astronomy Observatory in outback WA is helping astronomers explore the Universe.

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Current telescopes at the observatory

ASKAP radio telescope

Our own ASKAP has 36 dish antennas, each 12m in diameter. ASKAP can scan the whole sky extremely rapidly due to its unique CSIRO-designed phased array feed receivers (radio cameras). It is well equipped to find and localise strange phenomena in our Universe like fast radio bursts or odd radio circles. ASKAP is a precursor to the SKA telescopes.

Murchison Widefield Array

The Murchison Widefield Array (MWA) is a low frequency radio telescope consisting of 256 tiles, each with 16 dipole antennas. The MWA is led and operated by Curtin University and is supported by a consortium of five countries (Australia, Canada, China, Japan, and the USA). Like ASKAP, the MWA is an official precursor to the SKA telescopes.

EDGES

The Experiment to Detect the Global Epoch of Reionization Signature (EDGES) is run by Arizona State University. EDGES aims to detect the atomic hydrogen signal from the first stars. It consists of two instruments sensitive to different radio frequencies.

SKA-Low telescope

Hosting the SKA-Low telescope on site on Wajarri Country

The international SKA Observatory (SKAO) is a collaboration to build the world's largest and most capable radio telescopes. The SKA telescopes will be tens of times more sensitive and hundreds of times faster at mapping the sky than today’s best radio telescopes.
The two SKA telescopes will be built in Australia and South Africa. We will host the SKA-Low telescope, an array of 131,072 small Christmas tree shaped antennas spread across a distance of up to 74km.

CSIRO and the SKA project

Open days

Subscribe for updates when we schedule open days at Inyarrimanha Ilgari Bundara, the CSIRO Murchison Radio-astronomy Observatory.

Visit during one of our open days

Observatory infrastructure

Key infrastructure that supports the radio telescopes on site to explore our Universe.

Power station

The remote location of our observatory on Wajarri Country ensures a radio quiet operating environment, but makes access to basic infrastructure like roads and power a challenge. In partnership with Australian companies Horizon Power and Energy Made Clean, we’ve constructed a dedicated power station for the site. This consists of a solar array, a lithium-ion battery, and four diesel generators. It is the world’s first hybrid-renewable facility to power a major remote astronomical observatory. A further power station will be required for the SKA-Low telescope, intended to be largely from renewable sources. 

Precursors control building

The large amounts of data produced by the current telescopes on site require significant customised computing power. Computers and other essential electronics are housed in a specially designed control building that prevents electromagnetic interference from escaping: it has two layers of solid metal shielding and airlock doors designed to meet exacting international radio emissions standards. The transport of signals from the telescopes to the control building is via optical fibres.

Similar buildings will be required across the observatory for the SKA-Low telescope – a large central processing facility near the core and many smaller facilities along the outer reaches of the telescope.

Observatory virtual tour

Learn about and explore our radio astronomy site on Wajarri Country in outback Western Australia through the Inyarrimanha Ilgari Bundara, our Murchison Radio-astronomy Observatory virtual tour.

Explore the observatory site

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