Llano de Chajnantor Observatory

The observatory contains 64 transportable antennas measuring 12 meters in diameter, spread across 14 kilometers of high-altitude desert terrain at 5000 meters elevation.

In 1999, the Cosmic Background Imager became the first radio telescope to conduct observations under the skies of Llano de Chajnantor.

Scientists from Japanese, European, and North American institutions collaborate at this facility, advancing astronomical research through international partnerships.

The observatory offers guided tours on weekends between 9:00 and 13:00, with transportation provided exclusively by ALMA buses due to altitude considerations.

The location provides optimal conditions for submillimeter astronomy due to the extremely dry climate and minimal atmospheric interference at this elevation.

Location: Antofagasta Region

Inception: 1999

Elevation above the sea: 4,800 m

GPS coordinates: -22.95667,-67.76333

Latest update: May 11, 2025 13:56