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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

 We are amateur astronomers based in the South Western region of Sydney, Australia.


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.


 Macarthur Astronomy Forum

 SkyMapper and the Search for the Milky Way's Oldest Stars

11th December

Third Monday Of The Month

 Please note:

the December Forum 

will be held on the

second Monday of the month.


Details tba


 MAS Image of the Week

 Stargard at The Oaks

 MAS members preparing for sunset - and an evening under the stars .

Image © Tony Law (Macarthur Astronomical Society).
Webmaster's Choice

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.
           Full details of our upcoming public star-gazing events             

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