Astronomical data analysis software and systems / 12 Proceedings of a meeting [12th Conference for Astronomical Data Analysis Software and Systems] held at Baltimore, Maryland, USA, 13 - 16 October 2002 / ed. by Harry E. Payne, Robert I. Jedrzejewski and Richard N. Hook - Payne, Harry E.; Jedrzejewski, Robert I.; Hook, Richard N. (Astronomical data analysis software and systems, 2003)