University of Tokyo Atacama Observatory

The University of Tokyo Atacama Observatory is an astronomical facility with a 6.5-meter telescope equipped with infrared detection systems and adaptive optics technology. The instrument is located on Cerro Chajnantor in the Atacama Desert at approximately 5,640 meters elevation.

Site planning for the facility started in the late 1990s, with road construction to Cerro Chajnantor beginning in November 2005. The project took years to complete as it required building access routes to one of the world's highest observation sites.

The facility represents a partnership between Japanese and Chilean scientific institutions working together on astronomical research. This collaboration shows how countries can share their research strengths across borders.

The site operates at over 5,600 meters elevation, which is why the organization maintains a base facility in San Pedro de Atacama for staff acclimatization. Visitors should be aware of the extreme altitude and arid conditions when exploring the area.

The telescope features a silver-coated primary mirror that allows observations with minimal atmospheric water vapor interference. The extreme dryness and elevation of the location make it one of the world's best sites for infrared observations.

GPS coordinates: -22.98657,-67.74235

Latest update: December 10, 2025 16:22