Company description
The David Dunlap Observatory (DDO) is a large astronomical observatory site once owned by the University of Toronto, located just north of the city in Richmond Hill, Ontario within a 189-acre (76 ha) park. Its primary instrument is a 74-inch (1.88 m) reflector telescope, at one time the second largest telescope in the world, and still the largest in Canada. Several other telescopes are also located at the ...
