Harvard–Smithsonian Center for Astrophysics
The Center for Astrophysics | Harvard & Smithsonian (CfA), previously known as the Harvard–Smithsonian Center for Astrophysics, is an astrophysics research institute jointly operated by the Harvard College Observatory and Smithsonian Astrophysical Observatory. Founded in 1973 and headquartered in Cambridge, Massachusetts, United States, the CfA leads a broad program of research in astronomy, astrophysics, Earth and space sciences, as well as science education. The CfA either leads or participates in the development and operations of more than fifteen ground- and space-based astronomical research observatories across the electromagnetic spectrum, including the forthcoming Giant Magellan Telescope (GMT) and the Chandra X-ray Observatory, one of NASA's Great Observatories.
CfA Headquarters in Cambridge, Massachusetts
The Harvard College Observatory, circa 1899. Harvard Square and the City of Boston are in the distant background. Most of the telescope domes in the foreground are no longer standing, but the largest dome in the top right of the photo, housing the 1847 "Great Refractor", still remains. The Great Refractor was the largest telescope in the United States until 1867. It was the first telescope to take a photographic image of the Moon.
The first image of the photon ring of a black hole (M87*), captured by the Event Horizon Telescope. The CfA plays a central role in the project.
Harvard College Observatory
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.
Harvard College Observatory, circa 1899
Sketch of Harvard's Great Refractor telescope