RegisterLoginWednesday, August 24, 2016

Find out why there's no place like Dome!




Summer Program 2016




May 9

Transit of Mercury (we saw it on such a beautiful day)

 10:00am - 2:00pm

Drop-in Event

No Advance Tickets Required


May 14

5th Annual AstroNuts STEM Day event for kids and families

 11:30am - 4:00pm


May 14

Astronomy Day (at night) Cloudy or clear, join us for programs including presentations in our Skylab and space-themed arts & crafts (Space Crafts!) and tours of the big telescope. Evening observing - weather permitting through our telescopes on the lawn only.  No direct viewing through the big telescope tonight for crowd safety.

 8:00pm - 11:00pm

Drop-in Event

   No Advance Tickets Required

Donation of

$2 per person at the door.

June 4

Family and Friends Night



Jun 11

Family and Friends Night



Jun 18

Family and Friends Night



Jun 25

Family and Friends Night



July 9

Family and Friends Night


July 16

 StarTalk and Stargazing with Randy Attwood, Executive Director, Royal Astronomical Society of Canada


Title: "Apollo 11 - Some things you probably didn't know about the moon landing"

 9:00pm  SOLD OUT
July 23
 Family and Friends Night  9:00pm   SOLD OUT
Aug 6
 Family and Friends Night  8:45pm   SOLD OUT
Aug 11
 Perseid Meteor Shower 9:00pm - midnight


Aug 13

 StarTalk and Stargazing with Dr. Rachel Ward-Maxwell, Ontario Science Centre

 Title: "Celestial Storms"


 8:30pm  SOLD OUT
Aug 20
 StarTalk and Stargazing  8:15pm  SOLD OUT
Aug 27
 Family and Friends Night  8:15pm   SOLD OUT




How Do I Get There? Minimize

The DDO is located at 123 Hillsview Drive in Richmond Hill. 

Hillsview can be reached from Bayview Avenue, north of 16th Ave.

Click here for directions and a map.



FAMILY Nights are a great introduction to the night sky for our younger (and older) guests. Look through telescopes, make some space crafts, visit the Skylab and find out what's really up there! 

Family Nights require tickets to be purchased in advance. This program runs regardless of sky or weather conditions. If skies are clear you can check out the night sky through a variety of telescopes including the largest optical telescope in Canada! The evening also includes a presentation in our special Skylab that offers great (virtual) night sky viewing.

Tickets for Family Nights are non-refundable since the program runs regardless of sky or weather conditions. If it's cloudy, hang onto your tickets for free telescope viewing only, on a future evening.

All tickets $8.00

For safety reasons, children under 7 years of age not permitted in the big dome, but are welcome to look through the smaller telescopes on the lawn.



The DDO grounds are closed at night except to those attending our public programs.

Children 12 and under must be accompanied by an adult.

We regret there is NO WHEELCHAIR ACCESS to the observatory or bathrooms. Access to the telescope and bathrooms requires the use of stairs.

DDO Management reserves the right to restrict access to anyone whose behaviour jeopardizes the safety and security of the facility and/or the enjoyment of the facility and programs by other visitors or staff.  We welcome everyone who is supportive of our work as stewards of the facility.

Media wishing to access the DDO property and/or Observatory must first obtain permission from:

The DG Group: 905-669-5571 or DDO Site Management: 647-405-8118.

For other requests contact the DDO at or by phone at 905-883-0174.


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