1. Ames Research Center, NASA, Mail Stop 245-3, Moffett Field, CA 94035–1000, USA.
2. Department of Astronomy, Cornell University, Ithaca, NY 14853, USA.
3. Laboratoire Astrophysique Instrumentation Modélisation, Université Paris Diderot/Commissariat à l’Energie Atomique/CNRS, 91191 Gif sur Yvette Cedex, France.
4. U.S. Geological Survey, Denver, CO 80225, USA.
5. Department of Physics, University of Central Florida, Orlando, FL 32816, USA.
6. Department of Space Studies, Southwest Research Institute, Boulder, CO 80302, USA.
7. Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80309–0392, USA.
8. Istituto di Astrofisica Spaziale e Fisica Cosmica, Rome 00133, Italy.
9. Astronomy Department, Wellesley College, Wellesley, MA 02481, USA.
10. Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany.
11. Electrical Engineering Department, San Jose State University, San Jose, CA 95192, USA.
12. Astronomy Unit, Queen Mary University of London, London E1 4NS, UK.
13. Cassini Imaging Central Laboratory for Operations (CICLOPS), Space Science Institute, Boulder, CO 80301, USA.
14. Institute for Physics and Astronomy, University of Potsdam, Germany.
15. SETI Institute, Mountain View, CA 94043, USA.
16. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
17. Carleton College, Northfield, MN 55057, USA.