A radio observatory in Algonquin Park near Lake Traverse, Ontario, site of a 45.7-m antenna opened in 1966. It was operated by the National Research Council of Canada until 1991 and then jointly by the Geodetic Survey Division of Natural Resources Canada, Ottawa, and the Space Geodynamics Laboratory of York University, Toronto. Since 2008 it has been operated by Thoth Technology Inc. of Kettleby, Ontario. It is now used primarily for geodetic and astrometric Very Long Baseline Interferometry (VLBI) and space tracking.
http://www.arocanada.com/ Official observatory website.