Steward Observatory University of Arizona 933 N. Cherry Avenue 85721 Tucson USA;
Departement d'Astrophysique Geophysique et Oceanographie Universite de Liege 17 Allee du Six Aout B-4000 Sart Tilman Belgium;
Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive Pasadena CA 91109-8099 USA;
European Southern Observatory Alonso de Cordova 3107 Vitacura Santiago Chile;
Angstroem Laboratory Uppsala University Laegerhyddsvaegen 1 SE-751 21 Uppsala Sweden;
Leiden Observatory Niels Bohrweg 2 2300 RA Leiden The Netherlands;
Space Telescope Science Institute 3700 San Martin Drive Baltimore 21218 USA;
University of Virginia Department of Astronomy 530 McCormick Road Charlottesville VA 22904-4325 USA;
LBT; Adaptive Optics; coronagraphy; vortex phase mask; HR 8799;