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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".


It's Our 25th Birthday! 

25th Birthday

Yes, Macarthur Astronomical Society is twenty-five years old this month. Our first AGM was held on 15th January 1996 in Phillip Ainsworth's garage in Ingleburn.

Unfortunately we are unable to celebrate this latest club milestone, due to covid restrictions - but here is a reminder of the cake we celebrated our twentieth birthday with back in 2016:

Great times lie ahead!


Macarthur Astronomical Society

We are amateur astronomers based in the Macarthur Region of South West Sydney, Australia.

We organise the monthly Macarthur Astronomy Forum and run observing sessions for members, for the public and for community organisations. However, we regret that our Public Outreach Programme is suspended for the duration of the public health crisis.

For members event details, please visit our "Upcoming" page or use the site navigation menu at the top of the page.


Next Guest Speaker

Dr Devika Kamath (Maquarie University) 

Monday 18th January, 7.15 pm for 7.30  Online, for members only.

Kamath Devika 600x400


Topic: Cosmic Alchemy: The origin of chemical elements in the Universe.

Details are on our Upcoming page

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