Institution: | Department of Physics &Astronomy, University College London, Gower Street, London WC1E 6BT,;Center for Astrophysical Sciences, Department of Physics &Astronomy, The Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218, USA,;Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA,;Hughes STX, 7701 Greenbelt Road, Greenbelt, MD 20770, USA |