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Want to know what's up in the sky this week? Check out SkyLights

Scout or Guide group?  We offer year round programs for Scout and Guide groups to help earn your Astronomy Badge.  Contact us at  for more information.

We welcome school groups and special events year-round. Our programs meet Ontario curriculum requirements and they're fun!  Contact us at  for more information.

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You'll find out what's new in space, sci-fi and right here at the DDO. Get regular updates on DDO happenings by clicking here.



Welcome to our 2014 season

Happy 79th Anniversary to the David Dunlap Observatory

Saturday May 31, 2014 marked the 79th anniversary of the opening of Canada's largest telescope. We celebrated with a sold out Family Night program and clear skies!

This is our sixth year of stewardship at the David Dunlap Observatory. Join us this season for an evening of telescope observing, space crafts, space talks and tours.  There'll be ample opportunities for viewing through the many telescopes at a wide variety of celestial objects, including the Moon, Jupiter, Mars, Saturn and more.

We're looking forward to another great season exploring the night sky with exciting guest speakers and special events. Check out our 2014 Schedule to book your  tickets early.


  The David Dunlap Observatory is home to a wide range of public viewing nights, special events and educational programs. Visiting the 23-ton Great Telescope is an awe-inspiring experience.

You definitely don’t have to be a rocket scientist to enjoy the view through the big scope or the many smaller scopes on the lawn set up by members of the Royal Astronomical Society of Canada, Toronto Centre, who are the stewards of this great piece of Canada's astronomical history (and future!)  

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