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Harvard College Observatory
Astronomical observatory in Cambridge, Massachusetts, United States / From Wikipedia, the free encyclopedia
"HCO Bulletin" redirects here. For the Scientology publication, see Hubbard Communications Office Bulletin.
The Harvard College Observatory (HCO) is an institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy. It is located in Cambridge, Massachusetts, United States, and was founded in 1839. With the Smithsonian Astrophysical Observatory, it forms part of the Center for Astrophysics | Harvard & Smithsonian.
Quick Facts Alternative names, Organization ...
![]() Harvard College Observatory, circa 1899 | |
Alternative names | HCO ![]() |
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Organization | |
Observatory code | 802 ![]() |
Location | Cambridge, Massachusetts, US |
Coordinates | 42°22′53″N 71°07′42″W |
Altitude | 24 m (79 ft) ![]() |
Established | 1839 ![]() |
Website | www![]() |
Telescopes | |
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HCO houses a collection of approximately 500,000 astronomical plates taken between the mid-1880s and 1989 (with a gap from 1953–1968).[1] This 100-year coverage is a unique resource for studying temporal variations in the universe. The Digital Access to a Sky Century @ Harvard project is digitally scanning and archiving these photographic plates.[2]