I have several hats:
I got my doctorate with Alex Szalay in 1996 from John Hopkins.
My publications can be found on the arxiv or Spires.
My forays into visualization began with plotting positions of galaxies and quasars from the Sloan Digital Sky Survey - see the pictures in National Geographic or the Cosmus site.
I also found a way of creating Mars Color Stereo Images. These have been showing at Adler since February 2004.