Public Open Nights

Public Open Nights
21-22 August!

See the stars through big telescopes. Families welcome.

Group Bookings Promo

Group Bookings

Book a private star night for your group or club for a personalised astronomy experience.




Practical Astronomy Course Starts 26 August!

SASPAC is an in depth course to learn everything you wanted to know about backyard astronomy.

Membership Details

Become a Member!

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

Green Point Observatory is open for meetings every Thursday evening commencing at 7:30pm. Visitors are welcome to attend Guest Speaker Talks and SASI workshops. The Observatory is located at the bottom of a reserve off Green Point Road, Oyster Bay NSW. Follow the path for 100 metres.

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


The Sutherland Astronomical Society Inc. (SASI) was formed in 1961 when a small group of people wished 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.

At present, a state-of-the-art 35cm Schmidt Cassegrain Telescope is mounted in the roll-off observatory. The Society also has a 15cm refractor, 20cm Newtonian, 20cm SCT and 7x50 binoculars 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; Photography and CCD imaging as well as Public Education Courses.


World Record Certificates Available

The record is now official at 7960 people across 37 sites!

If you were at the observatory on 21 August 2015 and participated in the record attempt you may like to purchase an Official Certificate from the Guinness World Record Organisation.

To order certificates go to the Guinness World Records Storeand after you click Add To Basket, enter the following information:

ID: 003552188    Code: bzle1623BZ

August 2015 Public Open Night Photo Gallery

There is a new Public Open Night Photo Gallery including the World Record Stargazing attempt event.

New Member Photos from Rolando - Updated

Check out the new member photos submitted by Rolando De Michiel.

I have updated Roland's gallery - some really beautiful images by a master photographer.