Northern Sydney Astronomical Society

Our society is based in the northern suburbs of Sydney (NSW, Australia). We cater for a number of streams of astronomy-related interests at all levels. Please visit the site regularly to get updated news on our upcoming events and activities.


We are pleased to announce a new curriculum to support beginners who wish to get involved with the practical aspects of astronomy i.e. telescopes etc. It consists of an initial zoom session to cover the basics of setting up a telescope and then a field session to put that into practice. The field session is limited to 10 telescopes so that each person gets the support they need from the NSAS instructor. For more information, and to reserve your booking please refer

GENERAL MEETINGS Our General Meetings are held each month (except Dec/Jan) and are usually conducted at Regis Hall (refer Ordinary Meetings & AGM ) and via Zoom. The meeting is open to everybody, i.e. NSAS members and non-members alike. The meetings are on the 3rd Tuesday of the month at 7:30pm (AEDST). 

Guest Speaker - 7:30pm 21st June 

In the 3rd Century BC Greek Polymath Eratosthenes attempted to calculate size of the earth using shadows and observations of the world around him. Come along and hear Chris Mathews talk about the latest evidence for how accurate his results were.Visitors are welcome. For more details Using Shadows to calculate Earth's circumference

To join the Zoom meeting, go to our Zoom meeting page for details. For directions to Regis Hall please refer to Ordinary Meetings & AGM

For details of our meetings and events please refer to our Observing and Visitors link below or our Calendar.