SASPAC

Practical Astronomy Course

SASPAC is an introductory course in backyard Astronomy, with activity-based practicals. An immersive Astronomy experience.

The next course start 26 August 2026.

Speakers

Upcoming Speakers

Click on the speaker's name to see the calendar entry

5 Feb 2026 - Earl White - Bintel and Mars Society

5 Mar 2026 - Prof Richard de Grijs - Macquarie University

2 Apr 2026 - Hans Feitz - SASI

Group Bookings Promo

Group Bookings

Star Night group bookings are available for visiting Green Point Observatory for the non-daylight savings period from April to September.

 

 

Public Open Nights

Public Open Nights in August

Our next Open Nights will be held Friday 21 and Saturday 22 August 2026!

Look out for announcements on this website and Facebook.

Green Point Observatory is open for members most Thursday evenings commencing at 7:30pm.
Planned Thursday night events include :
1st Thursday each month Guest Speaker Talks
2nd Thursday each month committee meeting and SCIFi night.
3rd Thursday each month Cosmology video and discussion night
Special interest activities are allocated to 4th Thursday of the month when they arise

Visitors interested in attending Special Events and SASI Practical Astronomy Courses (SASPAC) please see the Public Events page.

When considering membership visitors are encouraged to attend a Guest Speaker Talk on the 1st Thursday of the month and speak to a committee member.

The Observatory is located at the bottom of Green Pt Reserve at the intersection of Green Pt Road, and Caravan Head Rd, Oyster Bay NSW. Follow the path westward through the reserve for 100 metres.

Click to view a Map to Green Point Observatory and obtain further directions.

Check our calendar for our meeting program.

The Sutherland Astronomical Society Inc. (SASI) was formed in 1961 when a small group of people decided to form a society and construct an observatory south of the Georges River. The Society was known, until the late 1970's, as the James Cook Astronomers Club.

Green Point Observatory was subsequently constructed on Council land at the corner of Green Point and Caravan Head Roads, Oyster Bay. Stage 1 consisted of a dome, library and 41cm Newtonian telescope (recently refurbished) and was completed in the mid 1960's. Stage 2, a Meeting Hall capable of seating 50 people was completed in the early 1970's and Stage 3, a roll-off roof observatory and storeroom was completed in 1996. The buildings were joined into one complex and extended in 2010.

At present, a state-of-the-art 35cm Schmidt Cassegrain Telescope is mounted in the roll-off roof observatory. The Society also has a range of portable telescopes and binoculars available for members' use. 

Some of the major activities of the Society and its members include Deep Sky, Planetary and Variable star observing; Occultations, Grazes and Eclipses; Astrophotography and Public Education Courses.

Newsflash

2025 Public Open Nights Pictures

Our public open nights on 29-30 August 2025 were a great success with familes enjoying views of the Moon and stars through our telescopes, as well as fascinating talks, our BBQ, snacks and merch.

Check out our 2025 open night photo gallery.

Look out for announcements of our next open nights in August 2026!

Astrophotography Workshops

For members only, we have been running a successful series of workshops on a range of topics on astrophotography. Members are more than welcome to attend. Check the calendar for details.

Junior Session Fun!

The junior sessions held in October 2022 were a lot of fun for all involved.

See the news article here, including the link to the photo gallery.

 

Membership Details

Become a Member!

Join the friendly astronomical society for socialising, practical advice, monthly speaker nights, weekly meetings and more!

ESO Plate 1424 Detail

Sponsorship - Purchase a Photographic Plate

Become a Society Sponsor by purchasing an historic glass plate.

 

Library Books

SASI's Library

We have a large range of books available for perusal and borrowing by members.

A catalogue is available on our library computer at the observatory.