CompuServe Thread

I don't have your projections but I do have two suggestions. 1) The contributors to the UseNet group "comp.infosystems.gis" have discussed the mapping of many planets. Raster image 'models' are probably available from an archive on the internet *somewhere* <isn't everything?>. They are more than likely just drapes over grid cells sliced from probe imagery. Also, you'd be dealing in Geo-coordinates (Lat and Long) and therefore you would need access to a GIS so that they could be reprojected into (presumably Transverse) Mercator and rendered. Accuracy may be a limit as I don't believe there are Datums of physical survey for other planets (though my experience is ridiculously narrow). Vector data may be more difficult, if not impossible, to find. 2) A faster way might be through NASA (which, as you know, you can reach through CIS). While they may not do the mapping themselves, I'm sure they've farmed it to some grad students (read 'slave labor') for digitizing and other grunt work. Images from NASA are all available for the asking and a media charge. If, by chance, the exact projection you want is in publication then it is obviously rendered as a photo which you can scan (public domain). Contact The Broadcast & Audio visual branch at NASA headquarters for catalogs 202-453-8594.