Air Force Research Laboratory
California Institute of Technology's Laboratories of Applied Physics, Bellan Plasma Group
California State University at Northridge's Department of Physics and Astronomy
Harvard-Smithsonian Center for Astrophysics
Lockheed Martin Solar and Astrophysics Laboratory
Michigan State University's Department of Physics and Astronomy
Montana State University's Department of Physics
NASA Goddard Space Flight Center
NASA Marshall Space Flight Center
Princeton University's Plasma Physics Laboratory
Southwest Research Institute's Instrumentation and Space Research Division
Stanford University's W.W. Hansen Experimental Physics Laboratory
University of California Los Angeles
University of California San Diego's Center for Astrophysics and Space Sciences
University of Chicago's Department of Mathematics
University of Colorado at Boulder's Center for Astrophysics and Space Astronomy
University of Colorado at Boulder's Joint Institute for Laboratory Astrophysics
University of Rochester's Department of Physics and Astronomy
Naukowcy z wielu krajów sa zaangażowani w przygotowanie programu teleskopu ATST. Obecnie przygotowywane są zasady formalnego usankcjonowania zasad współpracy międzynarodowej.