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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 



Welcome to MAS!

We are amateur astronomy enthusiasts from right across the South Western Region of Sydney, Australia, including Campbelltown, Camden, Liverpool and Wollondilly local government areas of NSW.

The Society brings local and international guest speakers to address our monthly Macarthur Astronomy Forum at the Campbelltown Campus of Western Sydney University.

We organise public astronomy nights in collaboration with Campbelltown Rotary Observatory at Western Sydney University and we collaborate with local institutions to maximise knowledge of the Universe in the local community.

We hold regular dark sky observing sessions for our members to advance their skills.





Macarthur Astronomy Forum

Monday 21st January, 7.30 pm               

macarthur astronomy forum logo transparent2         

Speaker: Ric Forster (MAS)

Topic: Astronomy from Optical to Radio Telescopes: a technologist's Journey


MAS Top Shot

Comet 46P Wirtanen

Image by Tony Law

 Image © copyright Tony Law (Macarthur Astronomical Society)


Protecting Our Night Sky

Dark Sky NSW Planning
                                                                             ^^^ c
lick image ^^^



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