1. G. E. Ballester and J. T. Clarke, Space Physics Research Laboratory, University of Michigan, Ann Arbor, MI 48109, USA.
2. J. T. Trauger, K. R. Stapelfeldt, D. Crisp, R. W. Evans, V. Meadows, R. Sahai, Jet Propulsion Laboratory, Pasadena, CA 91109, USA.
3. W. M. Harris, J. S. Gallagher III, J. G. Hoessel, Department of Astronomy, University of Wisconsin, Madison, WI 53706, USA.
4. E. B. Burgh, C. J. Burrows, R. E. Griffiths, Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA.
5. S. Casertano and J. E. Krist, Space Telescope Science Institute, Baltimore, MD 21218, USA.
6. J. J. Hester and P. A. Scowen, Department of Astronomy, Arizona State University, Tempe, AZ 85287, USA.
7. J. A. Holtzman and A. M. Watson, Department of Astronomy, New Mexico State University, Las Cruces, NM 88003, USA.
8. J. R. Mould, Mount Stromlo and Siding Springs Observatories, Australian National University, Weston Creek, ACT 2611, Australia.
9. J. A. Westphal, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.