Director of Cerro Tololo Inter-American Observatory (CTIO) which has headquarters located in La Serena, Chile. CTIO is a part of the National Optical Astronomy Observatory (NOAO), is operated by the Association of Universities for Research in Astronomy Inc. (AURA), under a cooperative agreement with the U.S. National Science Foundation (NSF). Here are some astronomy projects I have underway. Alistair Walker email Last update: November 13 2003