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David Dunlap Observatory

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David Dunlap Observatory, Astronomical observatory and national historic site in Richmond Hill, Canada

Description

David Dunlap Observatory in Richmond Hill is an astronomical facility featuring a 74-inch reflector telescope that remains the largest permanently installed telescope in Canada. The building was designed to house this major instrument and accommodate visitors during public observing nights when they can explore celestial objects.

History

The facility opened in 1935 with funding from David Dunlap's widow and leadership from Clarence Chant. Over the following decades it evolved into a major research center that produced groundbreaking discoveries about the cosmos.

Culture

The observatory serves as a gathering place where visitors connect with the cosmos and experience the wonder of the night sky firsthand. Public observing sessions bring together people who share a passion for discovering what lies beyond our world.

Practical

Visitors can join public observing sessions during open times to look through various telescopes and explore celestial objects. It is worth checking ahead for session times, as these vary by season and depend on clear skies for viewing.

Did you know?

The observatory building with its striking architecture has been featured in several television and film productions including NBC's Hannibal and Netflix's The Umbrella Academy. Its distinctive shape and historic appearance make it a recognizable backdrop for filmmakers.

Location
Inception
1935
Official opening
May 31, 1935
Elevation above the sea
224 m
Address
123 Hillsview Drive
GPS coordinates
43.86300,-79.42270
Latest update
December 7, 2025 20:41

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