![](https://macastro.org.au/wp-content/uploads/2023/04/2023-04-16-Western-Star-Trails-scaled.jpg)
Amateur Astronomers in South Western Sydney, Australia.
Macarthur Astronomical Society
Organisers of Macarthur Astronomy Forum.
Monday 17th Feb, 7.30 pm
Prof Richard de Grijs
(Macquarie University)
Monday 3rd March, 7.30 pm
Prof Fred Watson
(Astronomer at Large 2018-2024)
Monday 17th March, 7.30 pm
Dr Theresa Fruth
(Sydney University)
Macarthur Astronomical Society Incorporated. Founded in 1996
Star Trails: RP
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Webmaster’s Pick
Jupiter
Frank Alvaro
Click to enlarge!
See our Macastro Gallery for more stunning night sky photography from MAS members.
Macarthur Astronomy Forum: For MAS members and the general public
New venue for 2025 at Western Sydney University (Campbelltown Campus)
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Next Guest Speaker
Prof Richard de Grijs (Macquarie Uni)
Macarthur Astronomy Forum
Monday 17th February
See details on Noticeboard page
![](https://macastro.org.au/wp-content/uploads/2022/07/Campbelltown-Rotary-Observatory-After-Sunset-RP-1024x683.jpg)
Activities
What We Do
Dark sky observing sessions for members and beginners workshops.
Macarthur Astronomy Forum, bringing local and international professional astronomers to reveal their latest research.
We collaborate with Western Sydney University and other local institutions to broaden public understanding of the Universe.
![](https://macastro.org.au/wp-content/uploads/2022/07/An-Evening-With-The-Stars-Before-2-1024x682.jpg)
Macarthur Astronomy Forum
Monthly Meetings with Guest Speakers.
Held in collaboration with Western Sydney University (Campbelltown) and open to the public.
In a different building for 2025
See Notice Board for further details.
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Patron
Professor Geraint Lewis
Cosmologist, Astrophysicist, Teacher, Author, Public Speaker
Professor of Astrophysics at the Sydney Institute for Astronomy at the University of Sydney School of Physics. MAS Patron and an annual guest speaker at MAS since 2008.
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Partnership
Western Sydney University
We are proud community outreach partners with WSU.
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Observing Nights
Members Only
To see our schedule of dark sky observing nights for members, please see our Notice Board page.
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Macastro Articles
Telescopes, Amateur Astronomy & More
A collection of articles written by our members, for our members.
Visit here to read about practical astronomy or contribute a new article.
See Articles Page
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Public Outreach
Sharing our Universe
We visit schools and other local institutions to talk about our passion for astronomy and to show the night sky.
See Outreach page
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Beginners Workshops
Learning To Use Your Telescope
A great opportunity to meet other members, find your way around the sky and learn how to get the most out of your telescope.
See Workshop page
![](https://macastro.org.au/wp-content/uploads/2021/04/Chile-Peru-317-1024x606.jpg)
Macastro Tours
Local and International
We organise tours for members to visit astronomical facilities.
Past tours have included observatories in NSW, Canberra, China, Peru and Chile.
See Tours Page
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Recycling
Return and Earn
We encourage our members to support the NSW Government’s Return and Earn plastic & glass bottle recycling scheme. Select Macarthur Astronomical Society using your barcode card at a reverse vending centre near you to donate the proceeds to MAS.
See Return and Earn Page
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Symptoms?
Please stay at home
If you or a family member are showing any symptoms of covid, influenza or the common cold etc., please do not attend any of our events. Thank you!