Green Point Observatory, Astronomical observatory in Oyster Bay, New South Wales, Australia.

Green Point Observatory is an astronomy facility near Oyster Bay with two telescopes for viewing the night sky. The larger instrument is 41 centimeters across, the smaller measures 35 centimeters, and there is a meeting space that holds about 100 people.

The Sutherland Astronomical Society, first called the James Cook Astronomers Club, completed the observatory in 1969 with a dome, a 41 cm Newtonian telescope built by members and named for founder Keith Selby, and a small library. A foyer and 50-seat meeting hall followed in 1974, and a roll-off roof observatory with storeroom in 1997. In 2007 the buildings were joined, the hall extended to 100 seats, and a library annexe added.

A community of stargazers runs this facility and regularly hosts talks and discussions about the cosmos. Visitors can connect with fellow observers and learn from their knowledge.

The observatory stands at the corner of Green Point and Caravan Head Roads in Oyster Bay. It is a private facility, so general access is limited to public education courses, monthly open nights, annual star parties and booked group visits for schools, scouts and community groups. Public operations resumed in August 2022 after the COVID-19 closures.

The facility received computer-driven upgrades to its 41-centimeter telescope in 2022 and underwent thorough maintenance during lockdowns. These modern improvements enable more precise observations and extended equipment lifespan.