North American ALMA Science Center

We lead the North American efforts for the Atacama Large Millimeter/submillimeter Array.

North American ALMA Science Center in Charlottesville, Virginia, is the ALMA headquarters for North America. The NAASC supports ALMA science operations in Chile and provides user support for the North American community, including user website and proposal guides, proposal preparation, post-observation user support, data reduction “cookbooks,” and organization of ALMA meetings/workshops.

The North American ALMA Regional Center (NA ARC) is a subset of the NAASC, concentrating on the internationally agreed ALMA core functions. The ALMA international partners in East Asia and Europe support similar ALMA Regional Centers. In North America, the ARC is a partnership between NRAO, the National Research Council of Canada (NRC), supported by the Millimeter Astronomy Group at the Herzberg Institute of Astrophysics, and the National Science Council of Taiwan (NSC).


North America’s contributions to ALMA include:

  • The North American ALMA Science Center, ALMA “headquarters” for North America Receiver cartridges for ALMA bands 3 and 6
  • An ALMA “Front End Integration Center” where receiver cartridges from around the world are integrated into large cabinets that are then shipped to Chile for installation into antennas
  • At least twenty-five 12-meter antennas
  • ALMA’s photonic local oscillator
  • Digital electronics for transmitting signals from the antennas
  • The correlator for the 12-meter array
  • The Array Operations Site (AOS) technical building, second highest steel frame building in the world
  • Road and power distribution to the AOS
  • A variety of tools, including the Common Astronomy Software Applications (CASA) tool, Simdata, and Splatalogue.

  • Directory

    Link to, For more information about the North American ALMA Science Center (NAASC), please contact Katelyn Sevin at 434-296-0308 or via email at, or the NA ARC Manager Anthony Remijan at 434-244-6848 or via email at

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