Harvard University
Ph.D. Astronomy, 1986 (Thesis Advisor: Dr. Margaret Geller)
A.M. Astronomy, 1982

Massachusetts Institute of Technology
S.B. Physics, 1981

Formation and evolution of large-scale structure in the universe, large-scale velocity fields, galaxian distance indicators, morphology and dynamics of groups and clusters of galaxies, physical properties of superclusters, gravitational lensing of distant galaxies, observational constraints on cosmological parameters. Deep digital sky surveys, digital image processing, automated classification and cluster finding algorithms, astronomical data simulation, scientific database and archive systems.

Research Positions

2001 - present        Astronomer, STScI

 Head, Community Missions Office (since March 2005; deputy from 2003 - March 2005)

1994  - 2001          Associate Astronomer, STScI

Head of the Multi-mission Archiive at STScI (1997 - 2003)
Granted tenure in August 1996.
Data Archive Branch Chief (1995 - 2003)
Member of HST Advanced Camera for Surveys IDT

1994 - 2002           Adjunct Associate Professor, JHU
1993 - 1994           Adjunct Assistant Professor, JHU
1989 - 1994           Assistant Astronomer, STScI

Project Scientist for Digitized Sky Survey Image Compression Program

1986 - 1989           Postdoctoral Fellowship, Princeton University
1981 - 1986           Research Associate, Harvard University

2005                       NOAO Surveys TAC
2004                       Panel Chair, NOAO Science Archive PDR
2004                       NOAO "Building the System" Discussion Leader, Data Archives
2003, 2005             IDEAS Grant Review
2000 - 2001            Panel Chair, Extragalactic Science Working Group for GSMT

Since 1983              American Astronomical Society

Last updated: 19 May  2005