• Thumbnail for David Dunlap Observatory
    The David Dunlap Observatory (DDO) is an astronomical observatory site in Richmond Hill, Ontario, Canada. Established in 1935, it was owned and operated...
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  • David Dunlap Observatory Catalogue, known as the DDO or A Catalogue of Dwarf Galaxies, is a catalogue of dwarf galaxies that was compiled by Sidney van...
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  • Tennessee, a city Dunlap, Philadelphia, Pennsylvania, a neighborhood Dunlap, Seattle, Washington, a neighborhood Elsewhere David Dunlap Observatory, Richmond...
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  • Thumbnail for Richmond Hill, Ontario
    in 2019 after being a town since 1957. The city is home to the David Dunlap Observatory telescope, the largest telescope in Canada. The village of Richmond...
    70 KB (6,472 words) - 15:36, 5 June 2025
  • Thumbnail for David Alexander Dunlap
    astronomical facility promoted by astronomer Clarence Chant was named David Dunlap Observatory. After educating himself in public schools and high school in his...
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  • University of Toronto from David M. Dunlap and J. Moffat Dunlap, using the proceeds from the sale of the David Dunlap Observatory. The Dunlap Institute is allied...
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  • Thumbnail for Clarence Chant
    the opening of the David Dunlap Observatory. He retired from the university when the observatory opened, and moved into the Observatory House, Richmond Hill...
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  • Thumbnail for Helen Sawyer Hogg
    Helen Sawyer Hogg (category Harvard College Observatory people)
    Toronto, after her husband had received a job offer to work at the David Dunlap Observatory. For her first year there, Hogg continued her work photographing...
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  • although exhibition and interfaculty games were still held. The David Dunlap Observatory in Richmond Hill opened in 1935, followed by the University of...
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  • Thumbnail for Frank Scott Hogg
    Toronto and director of the David Dunlap Observatory from 1946 until his death. During this time he pursued the observatory's major research program to...
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  • Thumbnail for Dominion Observatory
    Dominion Astrophysical Observatory (Home to 2nd largest telescope in the world in the 1910s on debut) David Dunlap Observatory (Home to 2nd largest telescope...
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  • in the nightly work of Dr. Donald MacRae, an astronomer at the David Dunlap Observatory in Richmond Hill, Ontario.[1] Using the technology of his era,...
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  • Thumbnail for University of Toronto President's Estate
    the home of gold-mining magnate David Dunlap and his philanthropist wife, Jessie (who donated the David Dunlap Observatory to the University of Toronto in...
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  • Thumbnail for Mont Mégantic Observatory
    (ULaval). Founded in 1978, the observatory houses the second largest telescope in Eastern Canada after David Dunlap Observatory near Toronto. It is situated...
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  • Thumbnail for Cepheid variable
    at Las Campanas Observatory: OGLE-III (Optical Gravitational Lensing Experiment) Variable Stars catalog website David Dunlap Observatory of Toronto University:...
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  • was a Canadian astronomer. He served as first director of the David Dunlap Observatory from 1935 until 1946. Young was born on October 4, 1886, in the...
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  • Thumbnail for Vega
    controversial. The magnitude of Vega was measured again in 1981 at the David Dunlap Observatory and showed some slight variability. Thus it was suggested that...
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  • Thumbnail for BL Lacertae
    designation. In 1968, the "star" was identified by John Schmitt at the David Dunlap Observatory as a bright, variable radio source. A faint trace of a host galaxy...
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  • Michigan. Bolton then worked as a postdoctoral researcher at the David Dunlap Observatory in Richmond Hill, Ontario, teaching there until 1972. He taught...
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  • an astronomer at several observatories: Japan's 8.3-metre Subaru Telescope in Hawaii, the 1.9-metre David Dunlap Observatory in Toronto, Athabasca University...
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  • Thumbnail for Dominion Astrophysical Observatory
    reflector at David Dunlap Observatory in 1935 (also in Canada) debuted. Top 2 in 1918: The next largest were the Harvard College Observatory 60-inch (1...
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  • Thumbnail for Hollinger Mines
    brothers Duncan and John McMartin, and lawyer David Alexander Dunlap (for whom the David Dunlap Observatory was named). The main Hollinger gold mine operated...
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  • facilities Koffler Scientific Reserve David Dunlap Observatory Toronto Magnetic and Meteorological Observatory University of Toronto Schools Student life...
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  • This is a list of observatory codes (IAU codes or MPC codes) published by the Minor Planet Center. For a detailed description, see observations of small...
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  • Thumbnail for Grubb Parsons
    near-identical 74-inch (1.9 m) telescopes for the David Dunlap Observatory (Ontario, Canada, 1935), Radcliffe Observatory (South Africa, construction completed 1938...
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  • photographic magnitudes of 1041 late-type stars". Publications of the David Dunlap Observatory. 2 (4). University of Toronto, Toronto, Canada: University of Toronto...
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  • Thumbnail for Hillcrest Mall
    York Group. Lighting at the mall was designed with input from the David Dunlap Observatory to mitigate light pollution. This included minimal signage, shielded...
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  • Thumbnail for Cygnus X-1
    Royal Greenwich Observatory, and Charles Thomas Bolton, working independently at the University of Toronto's David Dunlap Observatory, announced the discovery...
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  • Thumbnail for UGC 5692
    Messier 81 Group. An alternate designation DDO 82 is named for the David Dunlap Observatory Catalogue. The galaxy was added to this list in 1959 by Sidney...
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  • Thumbnail for List of largest optical telescopes historically
    Archived from the original on 2011-07-25. Retrieved 2013-07-24. "Naval Observatory Flagstaff Station Celebrates First Half Century". 30 September 2005....
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