Skip to main content

Upcoming & Recent Events

23 May

Millennium Square Public Star Party - May 22 or 23, 2026 (NO-GO for Friday)

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square.
23 May

City Star Party: Long Branch Park - Explore the Moon - May 2026

Join us at the lake This is your chance to learn about moon features, hone observing skills and maybe even earn a RASC Explore the Moon - Binocular or RASC Explore the Moon - Telescope certificate!
31 May

DDO: Sunday Sungazing - May 2026

Safely observe the sun with us! During these family-friendly sessions, a DDO Astronomer will answer your questions about our closest star: the sun!

FEATURED NEWS

CAO Spring 2026 Work Party

The Spring Work Party was held at the E.C. Carr Astronomical Observatory (CAO) on Saturday, 2 May. Members of the CAO Committee were joined by other members of the Toronto Centre as well as 7 volunteers from the David A.

Main Telescope at the CAO Upgraded

During the Spring Work Party from May 2nd - 3rd, the control system on the the main telescope in the Geoff Brown Observatory was upgraded to a new technology platform (MKS 6000 control system). This mini-project involved:

Next Speaker and Social Night at the RHDDO - May 20th

On May 20th the Toronto Centre will be hosting a simulcast of our Speaker's Night at the historic David Dunlap Observatory in Richmond Hill followed by a s

Winter Access at the CAO

The Carr Observatory is open this winter on a limited basis as follows:

About us

Welcome to the Toronto Centre of the Royal Astronomical Society of Canada. We’re Canada’s largest astronomy club with more than 600 members in the GTA who share a love of astronomy and the wonders of the night sky

Learn More

The Sky Tonight

Toronto

 Astronomical forecasts for different locations in the GTA and a monthly, free star map.