Steinbacher, R. H.; Kliore, A.; Lorell, J.; Hipsher, H.; Barth, C. A.; Masursky, H.; Münch, G.; Pearl, J.; Smith, B.; Jet Propulsion Laboratory, California Institute of Technology Pasadena 91103; National Aeronautics and Space Administration, Washington, D. C. 20548; Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder 80302; U.S. Geological Survey, Flagstaff, Arizona 86001; California Institute of Technology, Pasadena 91109; Laboratory for Planetary Atmospheres, Goddard Space Flight Center, Greenbelt, Maryland 20771; Department of Astronomy, New Mexico State University, Las Cruces 88001