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Upcoming & Recent Events

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!
3 June

Recreational Astronomy Night - June 3, 2026

Join us for our monthly recreational astronomy night meeting. This is where our members get to show their latest projects or give tutorials and tips on just about everything to do with astronomy.
5 June

DDO Astronomy Family Night - June 2026 - All Aboard the Mars Express!

Families will see a presentation on a variety of exciting astronomy topics, followed by age-appropriate celestial activities.

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

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The Sky Tonight

Toronto

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