We are a society based in the northern suburbs of Sydney (NSW, Australia), containing a number of streams to cater for astronomy related interests at all levels. We have a number of core streams and activities at NSAS and these are listed below. Please visit the site regularly to get updated news on our upcoming events and activities.

NOTE: Due to the coronavirus lockdown the club observing nights are currently SUSPENDED. We will advise here when these activities resume. All our General Meetings / Guest Speaker Talks for the foreseeable future will be conducted on zoom including the Beginners Night on Zoom sessions. Visitors are welcome to our virtual Guest Speaker Talks and NAG.

NEW BEGINNERS COURSE 22 SEPT ON ZOOM We are pleased to announce a new curriculum to support beginners who wish to get involved with the practical aspects of astronomy ie: 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, or to reserve your booking please refer here.

Our General Meetings are held each month (except Dec/Jan) and are usually conducted at Regis Hall, as well as 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) and hence our next is scheduled for Tuesday 17th August. Please note that due to Coronavirus this months meeting will be via zoom only.

To join the Zoom meeting, click https://zoom.us/j/5823913701?pwd=cUJlNkNGdVUyNFhpc2lucWYzQ0F0UT09

(Zoom Meeting ID: 5823913701 Password: NSAS2021).

For directions to Regis Hall please refer to https://nsas.org.au/meetings-and-events/ordinary-meetings-agm/

This month’s zoom presentation at the General Meeting (Tuesday 17th August @ 7:30pm) is from Trevor Leaman (UNSW) who will talk to us about “Stellar variability”.

Stellar variability has been observed by Western astronomers from about the 1600s, although there is some suggestion, but widely disputed, that the variability in the star Algol (β Persi) may have been noted by early Arabian and pre-classical Greek astronomers. One of the more famous variable stars is Betelgeuse (α Orionis) in Orion. Its variability was observed by John Herschel in 1836 during his travels to South Africa. However, evidence has emerged that he may not have been the first to witness and record its variability. An Aboriginal Dreaming of the Kokatha People of the Great Victoria Desert region of South Australia, involving the stars of Orion and surrounding constellations, suggest that variability of Betelgeuse was observed and incorporated into the Dreaming narrative. The same Dreaming also suggests that variability in Aldebaran (α Tauri) was also observed and incorporated.

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