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  • welcome to

    macarthur astronomical society

  • observe

    Astronomers use scientific observation to learn about the Universe we live in. It's a beautiful place and, as a group of keen amateur astronomers, M.A.S. members have it as their common interest. We observe from two southern Sydney locations.

  • photograph

    Along with our "visual" observers, we have a group of dedicated astrophotographers within our ranks. This group find that photographing deep sky objects with high-quality cameras brings out the colour which your own eyes are unable to detect. See our photographs and you'll want to take your own.

  • educate

    Come to a Macarthur Astronomy Forum evening, held at UWS Campbelltown, to hear talks given by Australian and international professional astronomers as well as from amateurs with interests in their own specific fields. Entry is free for all.

  • events

    M.A.S. members are deeply committed to sharing our combined knowledge of, and love for, the night sky and the science of astronomy. We hold public open nights during the year - keep watching out for "What's On".

Macarthur Astronomical Society

G'day From Sydney, Australia

We are amateur astronomers based in the Campbelltown, Camden and Wollondilly region of NSW.



Formed in 1996, membership of our society of diverse and enthusiastic amateur astronomers currently stands at over one hundred!

Centred on the local government areas of Campelltown, Camden and Wollondilly, our activities extend across the Greater South Western region of Sydney. 

Our Patron is astrophysicist Professor Bryan Gaensler - 1999 Young Australian of the Year - currently Director of the Dunlap Institute for Astronomy and Astrophysics at The University of Toronto, Canada.


We conduct the monthly Macarthur Astronomy Forum at the Campbelltown Campus of Western Sydney University.

We hold public astronomy nights in collaboration with Campbelltown Rotary Observatory at Western Sydney University and dark sky observing sessions for our members.


2017 Public Nights at Campbelltown Rotary Observatory

MAS Winter programme: 

Saturday 8th April; Saturday 3rd June; Saturday 29th July; Saturday 30th September. 


Macarthur Astronomy Forum

Third Monday of the Month


Monday 20th March

Dr Vanessa Moss (Sydney Uni)

Please visit our
Meetings and Events page
 for full details.




MAS Image of the Week

Dr Emil Lenc

Astronomer Emil Lenc talked to us at the Macarthur Astronomy Forum this week about the Murchison Wide-field Array telescope in Western Australia. He is seen here demonstrating one of the 2048 dipole radio antennae which combine to make the Array.

Dr Emil Lenc - MAS Guest Speaker for February 2017
Image © Roger Powell (Macarthur Astronomical Society)




The Guinness World Record for the 'Highest Number of Stargazers Across Multiple Sites At One Time' is held by MAS jointly with ANU and 35 other sites across Australia.

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