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The Carnegie Observatories

Contributing to basic research in astronomy since 1904, as a part of the Carnegie Institution for Science


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Latest News

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The University of Chicago Joins Giant Magellan Telescope Project

The Giant Magellan Telescope Organization (GMTO) Corporation is pleased to announce that the University of Chicago has joined the partnership that will construct the 25-meter Giant Magellan Telescope (GMT), a state of the art astronomical observatory. The GMT will be used to address fundamental questions in cosmology and astrophysics and to explore worlds around other stars. [more]
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Galaxy Formation Pioneer Dr Leonard Searle Dies

Leonard Searle, Astronomer and Director Emeritus of Carnegie Observatories, died at his home on July 2, 2010, in Pasadena, CA, in the midst of a busy retirement that followed a long, distinguished scientific career. [more]


Giant Magellan Telescope

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The Giant Magellan Telescope (GMT)—the product of more than a century of astronomical research and telescope-building by some of the world’s leading research institutions—will open a new window on the universe for the 21st century. Scheduled for completion around 2019, the GMT will have the resolving power of a 24.5-meter (80 foot) primary mirror—far larger than any other telescope ever built. It will answer many of the questions at the forefront of astrophysics today and will pose new and unanticipated riddles for future generations of astronomers.

Magellan Telescopes

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The twin 6.5-meter Magellan telescopes are widely considered to be the best natural imaging telescopes in the world. They were built and continue to be operated by a consortium consisting of the Carnegie Institution of Washington, Harvard University, MIT, the University of Michigan, and the University of Arizona. The telescopes are located at Carnegie's Las Campanas Observatory, high in the southern reaches of Chile's Atacama Desert. First light for the Walter Baade telescope occurred on September 15, 2000. The Landon Clay telescope started science operations on September 7, 2002.

There are several instruments operating on, or under construction for, the Las Campanas telescopes.

Du Pont and Swope Telescopes

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The Observatories currently operate the Irénée du Pont 2.5-meter and Henrietta Swope 1.0-meter telescopes at Las Campanas, Chile. Telescope time is available to the Observatories' scientific staff and visiting investigators.