York University Observatory Location
AstroGeo is a division of CGI Controlled Geophysics Inc.
189 Clark Avenue, Thornhill, ON, L3T 1T3
Tel: (905) 881-2059
David Dunlap Observatory Location
The David Dunlap Observatory is located north of Toronto and near major expressways at:
123 Hillsview Drive, Richmond Hill, ON, L4C 1T3