Neptune

1. Does NSSDC have Voyager 2 data at Neptune on CD-ROM?

Yes. There are four volumes (Volumes 9-12) of the Voyager imaging CD-ROM set which contain images of Neptune and its satellites. In addition, a single volume (Volume 1) of the Outer Planets Fields and Particles CD-ROMs contains data from all of the fields and particles instruments. Not represented on CD-ROM at this time are data from the infrared spectrometer (IRIS), ultraviolet spectrometer (UVS), and radio science experiments.
More information on CD-ROMs available from the NSSDC can be found in the NSSDC CD-ROM Catalog.URL: http://nssdc.gsfc.nasa.gov/cd-rom/

2. Are Digital Image/Terrain/Elevation Models/Maps available for the Neptunian satellites?

No. The Astrogeology Branch of the United States Geological Survey in Flagstaff, Arizona, which produces such things, has not indicated that such a product is forthcoming. They should be contacted for further information. Information on DIMs of other planets and satellites is available on the Digital Image Models Page.URL: http://nssdc.gsfc.nasa.gov/planetary/dims.html