• <span>LAS CAMPANAS OBSERVATORY</span>
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Welcome to our Website!

On October 8 we advanced to Phase of Operation Ops_3 (for more details on phases read here). All observations will be taken remotely. More information here.

We returned to night time operations with both Magellan telescopes. All observing will remain in remote-mode for the foreseeable future. We remind observers that they should read the Remote Observing Guidelines well in advance of their Magellan run to make sure they are properly prepared for remote observing. Due to ongoing infrastructure renovations, the duPont telescope will remain without nighttime operations through at least the end of September 2021. More information.

Guidelines for entry to Chile and LCO of non-resident foreigners in Chile and astronomers resident in Chile

If you have any comments or feedback about our website, please send an email to contacto@lco.cl.

Las Campanas Observatory

The Las Campanas Observatory is located at a superb site high in the southern reaches of Chile’s Atacama Desert, and was established in 1969 to be home to both 40-inch and 100-inch reflecting telescopes. The newest additions here, twin 6.5-meter reflectors, are remarkable members of the latest generation of giant telescopes. The future of Las Campanas Observatory will be marked by the construction of the Giant Magellan Telescope (GMT), an extremely large telescope that, with seven segmented mirrors, will be 80 feet in diameter. LCO is part of the Astronomy & Astrophysics division of the Carnegie Institution for Science.

Carnegie Astronomy & Astrophysics

The history of 20th century astronomy is inextricably linked to the Carnegie Observatories. From the revelation of the universe’s expansion to the discovery of dark energy, Carnegie Observatories scientists have transformed humankind’s understanding of the cosmos. The groundbreaking work continues today at our world-famous Las Campanas Observatory in Chile, home to the twin Magellan telescopes, and site of the future Giant Magellan Telescope. Carnegie scientists are still at the vanguard of research on galaxy formation and evolution, the chemical evolution of stars and planets, stellar variability, supernovae, and more.

Latest articles and news

LCO celebrates half a century since its first light with the launch of a virtual tour

LCO celebrates 50 years in October since the first light of its first telescope, which began operating in Chile in 1971. To commemorate this important milestone, and to celebrate the month of science in Chile, the observatory will premiere a virtual tour through its facilities, based on a nocturnal visit, something unprecedented for this type of tour.

Chemical history of a star cluster in the inner regions of the Milky Way galaxy revealed

An international group of researchers conducted the first investigation of the chemical properties of the ancient globular cluster Tonantzintla 1. The researchers worked with data obtained with the Irénée du Pont telescope at Las Campanas Observatory.