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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

Amateur Astronomers 

With over 100 members from across the SW 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

Third Monday of Each Month

Monday 21st May - details on our News and Events page.


Dr Lee Spitler (Macquarie University / Australian Astronomical Observatory) will talk about: Ultra-faint Imaging With The Huntsman Canon-lens Telescope.


Public Outreach Events

Public Night at The Domes

Our winter season of free public nights at Campbelltown Rotary Observatory gets underway after sunset on Saturday 28th April.

Full details on our Public Nights page.


World Record Attempt at The Domes

In association with ABC and ANU we will be attempting to improve our existing world record for the number of people star-gazing across multiple sites at the same time. Everyone is welcome to join us - and of course, it's free!

We might be on the telly!

Please see details on our News & Events page for information and free booking details.



MAS Image of the Week

NGC 5139 

Image of Omega Centauri by Peter Godwin

Image  ©  Peter Godwin (Macarthur Astronomical Society).
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