1. Lab. d'Astrophysique de Marseille (France)
2. Institut de Planétologie et d’Astrophysique de Grenoble (France)
3. Observatoire de Genève (Switzerland)
4. ASTRON (Netherlands)
5. ETH Zürich (Switzerland)
6. INAF - Osservatorio Astronomico di Padova (Italy)
7. Ctr. de Recherche Astrophysique de Lyon, Univ. Lyon, Univ. Lyon 1, CNRS (France)
8. European Southern Observatory (Chile)
9. Space Telescope Science Institute (United States)
10. California Institute of Technology (United States)