RegisterLoginWednesday, March 10, 2010
The Dome

The Observatory with its iconic blue door has been the subject of countless photographs. One of the best we've seen is by Kerry-Ann Lecky Hepburn of the Hamilton Amateur Astronomers.

Join Us!

Would you like to learn more about astronomy? The Royal Astronomical Society of Canada, Toronto Centre, runs a variety of programs at the DDO, the Ontario Science Centre and many other locations to put the universe at your fingertips. Contact the Society at http://toronto.rasc.ca/

Be a friend of the DDO on Facebook! Get regular updates on DDO happenings by clicking here.

We're on Youtube! Thanks to Toronto Centre member Eric Briggs for creatively marking the return of the David Dunlap Observatory.

A Stellar Experience

The David Dunlap Observatory, in Richmond Hill, Ontario, houses the largest telescope in Canada. 

The Royal Astronomical Society of Canada, Toronto Centre, operates the 74-inch reflecting telescope and is providing public education and outreach programs at the DDO.  The Society has been involved with the David Dunlap Observatory since it first opened its doors in 1935 and we're proud to be part of its renaissance as an educational facility.

Public events are held most Saturday nights from early summer through the fall months. For more information check out the Tickets and more page.  We have limited space available for public viewing nights and tickets book up quickly.

We hope that you'll join us for public viewing nights and many special events under the stars.

Winter Observing Minimize

We are happy to welcome Girl Guides and Scouts to the David Dunlap Observatory. It's a great place for Guides and Scouts to earn their astronomy badges. Just contact us at info@theddo.ca

Remember that any winter observing requires you to dress as warmly as if you were standing outside at night. There is no heat in the observatory.

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