1. Leiden Observatory, Leiden Univ. (Netherlands)
2. NOVA (Netherlands)
3. Max-Planck-Institut für Astronomie (Germany)
4. Commissariat à l'Energie Atomique (France)
5. UK Astronomy Technology Ctr. (United Kingdom)
6. ETH Zürich (Switzerland)
7. Univ. of Vienna (Austria)
8. KU Leuven (Belgium)