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Upcoming & Recent Events

19 June

Millennium Square Public Star Party - June 19 or 20, 2026 (GO for Friday)

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

City Star Party: Long Branch Park - Explore the Moon - June 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!
22 June

DDO Bring Your Own Binoculars Stargazing Night - June 2026

Bring your own binoculars for a free, guided tour of the night sky.

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.