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ALMA is a partnership between North America, Europe, and East Asia in cooperation with the Republic of Chile.   ALMA construction and operations are led on behalf of Europe by the European Organization for Astronomical Research in the Southern Hemisphere (ESO), on behalf of North America by the National Radio Astronomy Observatory (NRAO), which is managed by Associated Universities, Inc. (AUI), and on behalf of East Asia by the National Astronomical Observatory of Japan (NAOJ). The Joint ALMA Observatory (JAO), located in Santiago, Chile, provides the unified leadership and management of the construction, commissioning and operation of ALMA.

ALMA interface

The interface between ALMA and the astronomy community is provided by the three partners through the ALMA Regional Centers (ARCs).    These are located at NAOJ in Mitaka, Japan, for the East Asian partner, at ESO in Garching, Germany, for the European partner, and at NRAO in Charlottesville, USA, for the North American partner. Links to ARC Guides, describing the User services provided, are given below.



The governing and policy-making body for the project is the ALMA Board, consisting of members representing the three partner regions and Chile.  The ALMA Board is advised by an international ALMA Management Advisory Committee (AMAC) and an international ALMA Science Advisory Committee (ASAC).    The ASAC is in turn advised by regional committees: the ALMA North American Scientific Advisory Committee (ANASAC), the ALMA East Asian Scientific Advisory Committee (EASAC), and the  ALMA European Scientific Advisory Committee (ESAC),


ALMA is funded in Europe by ESO, in North America by the U.S. National Science Foundation (NSF) in cooperation with the National Research Council of Canada (NRC) and the National Science Council of Taiwan (NSC), and in East Asia by the National Institutes of Natural Sciences (NINS) of Japan in cooperation with the Academia Sinica (AS) in Taiwan.