The Times Australia
The Times World News

.

60 years after it first gazed at the skies, the Parkes dish is still making breakthroughs

  • Written by John Sarkissian, Operations Scientist, CSIRO
60 years after it first gazed at the skies, the Parkes dish is still making breakthroughs

The CSIRO’s 64-metre Parkes Radio Telescope was commissioned on October 31 1961. At the time it was the most advanced radio telescope in the world, incorporating many innovative features that have since become standard in all large-dish antennas.

Through its early discoveries it quickly became the leading instrument of its kind. Today, 60 years later, it is still arguably the finest single-dish radio telescope in the world. It is still performing world-class science and making discoveries that shape our understanding of the Universe.

The telescope’s origins date back to wartime radar research by the Radiophysics Laboratory, part of the Council for Scientific and Industrial Research (CSIR), the forerunner of the CSIRO. On the Sydney clifftops at Dover Heights, the laboratory developed radar for use in the Pacific theatre. When the second world war ended, the technology was redirected into peaceful applications, including studying radio waves from the Sun and beyond.

Researchers use the antenna at Dover Heights
Early antennas were much simpler, not to mention smaller. CSIRO, Author provided

In 1946, British physicist Edward “Taffy” Bowen was appointed chief of the Radiophysics Laboratory. He had been one of the brilliant engineers, dubbed “boffins”, who developed radar as part of Britain’s secret prewar military research. The Radiophysics Laboratory had a dedicated radio astronomy group, led by the brilliant Joseph (Joe) Pawsey. Many of the group’s members went on to become leaders in the nascent field of radio astronomy, including Bernie Mills, Chris Christiansen, Paul Wild, Ruby Payne-Scott (the first female radio astronomer), and John Bolton.

While the group’s initial research focused on radio waves from the Sun, Bolton’s attention soon shifted to identifying other sources from farther afield. By the early 1950s, the Dover Heights radar dishes had discovered more than 100 sources of radio emissions from the Milky Way and beyond, including the signals from supernova explosions. These observations established the Radiophysics Laboratory as a world-leading centre of radio astronomy.

By 1954, the technology at Dover Heights was outdated and obsolete, prompting Bowen to initiate the next step for Australian radio astronomy: a state-of-the-art new radio telescope.

He decided the most versatile option was to build a large, fully steerable dish antenna. The eventual price tag was A$1.4 million (A$25.6 million in today’s terms) – far beyond CSIRO’s budget at the time.

The Menzies government agreed to fund the project, provided at least 50% of the money came from the private sector. Using his wartime contacts, Bowen secured A$250,000 each from the Carnegie Corporation and Rockefeller Foundation, plus a range of private Australian donations.

British firm Freeman Fox and Partners produced the detailed design, incorporating suggestions from legendary engineer Barnes Wallis, of “dambusters” fame. Based on the available budget and desired functionality, a diameter of 64 metres was agreed for the dish.

1955 design by Barnes Wallis
1955 design notes by Barnes Wallis. CSIRO, Author provided

The chosen site was near the town of Parkes, about 350km west of Sydney. This location had favourable weather conditions and was free of local radio interference. The local council also enthusiastically offered to cover the cost of some of the earthworks.

In 2020, the local Wiradjuri people named the telescope Murriyang[1], a traditional name meaning “Skyworld”.

The telescope’s construction began in September 1959 and was completed just two years later. On October 31 1961, the Governor-General William Sidney, Viscount De l'Isle, officially opened the telescope in a ceremony attended by 500 guests.

The Parkes dish's opening ceremony
The Governor-General (centre) greets guests at the telescope’s 1961 opening ceremony. CSIRO, Author provided

John Bolton was appointed the founding director of the telescope. Under his dynamic, decade-long tenure, astronomers made a string of significant discoveries that established the dish as the premier scientific instrument in Australia.

Astronomers revealed the immense magnetic field of our Milky Way galaxy. A few months later, the telescope detected quasars, the most distant known objects in the Universe – a discovery that increased the size of the known Universe tenfold. To cap off a memorable first year, Parkes tracked the very first interplanetary space mission, Mariner 2, when it flew past Venus in December 1962.

In the 1970s, researchers discovered and mapped the immense molecular clouds interspersed through our galaxy. The study of pulsars – rotating stars that emit beams of radio waves, rather like a lighthouse – became a major field of research. Parkes has discovered more pulsars than all other radio observatories combined, including the only known double pulsar system, spotted in 2003.

In the 1990s, the distribution of galaxies was mapped to a distance of 300 million light years, revealing the complex structure of the Universe. More recently, Parkes discovered the first Fast Radio Burst – a short, intense blast of radio waves[2] created by an as-yet unknown process. The telescope has also been involved in the Search for Extra-Terrestrial Intelligence (SETI), including the ten-year Breakthrough Listen project[3], which began in 2016.

Read more: A brief history: what we know so far about fast radio bursts across the universe[4]

To the public, the telescope is perhaps best known for its space tracking, especially its role in the Apollo lunar missions. But it has also supported other significant missions such as NASA’s Voyager 2[5], which flew past Uranus and Neptune in the 1980s and crossed into interstellar space in 2018. In 1986, Parkes was the prime tracking station for the European Giotto mission to Halley’s Comet. And next year, Parkes will track some of the first commercial lunar landers.

Read more: Australia is still listening to Voyager 2 as NASA confirms the probe is now in interstellar space[6]

Parkes dish with the Moon in the background.
Parkes tracking the Apollo Moon mission in 1969. CSIRO, Author provided

Originally intended to operate for 20 years, the telscope’s longevity is a result of constant upgrades. Recent improvements include a new ultra-wideband receiver that can scan a huge range of radio frequencies, and CSIRO-developed “phased array feeds” (PAFs) that allow the telescope to observe up to 36 points in the sky at once. Work is now under way on a cryogenically cooled PAF that, when installed in 2022, will double this number. With these upgrades in place, a single receiver can be used to deliver more than 90% of current Parkes operations.

Construction workers building the dish
Construction took just two years. CSIRO, Author provided

It’s hard to say how long the Parkes dish will continue to work. It depends on future upgrades and whether the telescope’s structure remains in good working order. But astronomers will always have a need for a large single-dish antenna.

Parkes has maintained its world-leading position in radio astronomy by constantly adapting to meet new requirements. Today it stands as an icon of Australian science and achievement. Sixty years after it first trained its eye on the sky, the future still looks bright at Parkes.

Read more https://theconversation.com/60-years-after-it-first-gazed-at-the-skies-the-parkes-dish-is-still-making-breakthroughs-170753

Times Magazine

Building an AI-First Culture in Your Company

AI isn't just something to think about anymore - it's becoming part of how we live and work, whether we like it or not. At the office, it definitely helps us move faster. But here's the thing: just using tools like ChatGPT or plugging AI into your wo...

Data Management Isn't Just About Tech—Here’s Why It’s a Human Problem Too

Photo by Kevin Kuby Manuel O. Diaz Jr.We live in a world drowning in data. Every click, swipe, medical scan, and financial transaction generates information, so much that managing it all has become one of the biggest challenges of our digital age. Bu...

Headless CMS in Digital Twins and 3D Product Experiences

Image by freepik As the metaverse becomes more advanced and accessible, it's clear that multiple sectors will use digital twins and 3D product experiences to visualize, connect, and streamline efforts better. A digital twin is a virtual replica of ...

The Decline of Hyper-Casual: How Mid-Core Mobile Games Took Over in 2025

In recent years, the mobile gaming landscape has undergone a significant transformation, with mid-core mobile games emerging as the dominant force in app stores by 2025. This shift is underpinned by changing user habits and evolving monetization tr...

Understanding ITIL 4 and PRINCE2 Project Management Synergy

Key Highlights ITIL 4 focuses on IT service management, emphasising continual improvement and value creation through modern digital transformation approaches. PRINCE2 project management supports systematic planning and execution of projects wit...

What AI Adoption Means for the Future of Workplace Risk Management

Image by freepik As industrial operations become more complex and fast-paced, the risks faced by workers and employers alike continue to grow. Traditional safety models—reliant on manual oversight, reactive investigations, and standardised checklist...

The Times Features

Is our mental health determined by where we live – or is it the other way round? New research sheds more light

Ever felt like where you live is having an impact on your mental health? Turns out, you’re not imagining things. Our new analysis[1] of eight years of data from the New Zeal...

Going Off the Beaten Path? Here's How to Power Up Without the Grid

There’s something incredibly freeing about heading off the beaten path. No traffic, no crowded campsites, no glowing screens in every direction — just you, the landscape, and the...

West HQ is bringing in a season of culinary celebration this July

Western Sydney’s leading entertainment and lifestyle precinct is bringing the fire this July and not just in the kitchen. From $29 lobster feasts and award-winning Asian banque...

What Endo Took and What It Gave Me

From pain to purpose: how one woman turned endometriosis into a movement After years of misdiagnosis, hormone chaos, and major surgery, Jo Barry was done being dismissed. What beg...

Why Parents Must Break the Silence on Money and Start Teaching Financial Skills at Home

Australia’s financial literacy rates are in decline, and our kids are paying the price. Certified Money Coach and Financial Educator Sandra McGuire, who has over 20 years’ exp...

Australia’s Grill’d Transforms Operations with Qlik

Boosting Burgers and Business Clean, connected data powers real-time insights, smarter staffing, and standout customer experiences Sydney, Australia, 14 July 2025 – Qlik®, a g...