Atacama Large Millimeter/submillimeter Array | ALMA

Astronomers reveal first image of the black hole at the heart of our galaxy

Press Releases

Astronomers reveal first image of the black hole at the heart of our galaxy

Demand to Observe with ALMA Keep Increasing

Demand to Observe with ALMA Keep Increasing

Scientists Find Elusive Gas Hiding in Plain Sight

Scientists Find Elusive Gas Hiding in Plain Sight

ALMA Cycle 8 New Proposal Review Process Had Successful Results

ALMA Cycle 8 New Proposal Review Process Had Successful Results

Outreach

Astronomical Mural

Astronomical Mural

Astronomers Detect Most Distant Galaxy Candidate Yet

Astronomers Detect Most Distant Galaxy Candidate Yet

ALMA – In Search of our Cosmic Origins

ALMA – In Search of our Cosmic Origins

Hey DUDE: Mysterious Death of Carbon Star Plays Out Like Six-Ring Circus

Hey DUDE: Mysterious Death of Carbon Star Plays Out Like Six-Ring Circus

ALMA – The Rebirth of a Giant – Documentary

ALMA – The Rebirth of a Giant – Documentary

ALMA Cycle 9 Call for Proposals is Now Open

ALMA Cycle 9 Call for Proposals is Now Open

First light with the new spectrometer for the Atacama Compact Array

First light with the new spectrometer for the Atacama Compact Array

Astronomy Day celebrations in Chile

Astronomy Day celebrations in Chile

ALMA Factsheet

Virtual Tour

Where is ALMA?

Operation Support Facility (OSF)

San Pedro de Atacama, Chile

Array Operation Site (AOS)

San Pedro de Atacama, Chile

Santiago Central Offices (SCO)

Santiago, Chile

Operations Support Facility (OSF)
The ALMA Operations Support Facility, at an altitude of 2900 metres in the Chilean Andes, serves as the focal point for most of the observatory activities, hosting the antenna control room, laboratories and offices. Address: Kilómetro 121, Carretera CH 23, San Pedro de Atacama, Chile Phone: +56 2 2467 6416
Array Operation Site (AOS)
The ALMA Array Operations Site, at an altitude of 5000 metres in the Chilean Andes, houses the ALMA antennas and the correlator, the fastest data processing system ever used at an astronomical site. Coordinates: 23° 1′ 23.5″ S, 67° 45′ 16.7″ W

Image gallery

See all

ALMA, a worldwide collaboration

The Atacama Large Millimeter/submillimeter Array (ALMA) -the largest astronomical project in existence- is a single telescope of revolutionary design, composed of 66 high precision antennas located on the Chajnantor Plateau, 5000 meters altitude in northern Chile. ALMA is an international partnership of the European Southern Observatory (ESO), the U.S. National Science Foundation (NSF) and the National Institutes of Natural Sciences (NINS) of Japan, together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile.