Acknowledgments The WFC3 Science Integrated Product Team (2012) Jay Anderson Sylvia Baggett John Biretta Matthew Bourque Tomas Dahlen Tiffany Davis Susana Deustua Linda Dressel Michael Dulude Heather Gunning Derek Hammer Bryan Hilbert Vera Kozhurina-Platais Janice Lee Knox Long Jennifer Mack John MacKenty (Team Lead, WFC3 Deputy Instrument Scientist) Peter McCullough Kai Noeske Nor Pirzkal Adam Riess Elena Sabbi Megan Sosey Alex Viana Past Science IPT Members Elizabeth Barker Wayne Baggett Howard Bond Howard Bushouse Tom Brown Laura Cawley Ed Cheng (GSFC, now Conceptual Analytics) Ilana Dashevsky Don Figer Mauro Giavalisco Ron Gilliland Shireen Gonzaga Christopher Hanley George Hartig Ron Henry Robert Hill (GSFC) Jason Kalirai Jessica Kim Quijano Randy Kimble (Instrument Scientist, GSFC) Pat Knezek Ray Kutina Casey Lisse Olivia Lupie (GSFC) André Martel Brian McLean Cheryl Pavlovsky Larry Petro Abhijith Rajan Neill Reid Massimo Robberto Michael Robinson Barry Rothberg Massimo Stiavelli Mike Wong The WFC3 Scientific Oversight Committee Bruce Balick, University of Washington Howard E. Bond, Space Telescope Science Institute Daniela Calzetti, University of Massachusetts C. Marcella Carollo, Institute of Astronomy, ETH, Zurich Michael J. Disney, Cardiff University Michael A. Dopita, Mt Stromlo and Siding Spring Observatories Jay Frogel, AURA Donald N. B. Hall, University of Hawaii Jon A. Holtzman, New Mexico State University Randy Kimble, NASA Goddard Space Flight Center (ex officio) Gerard Luppino, University of Hawaii Patrick J. McCarthy, Carnegie Observatories John MacKenty, Space Telescope Science Institute (ex officio) Robert W. O’Connell, University of Virginia (Chair) Francesco Paresce, European Southern Observatory Abhijit Saha, National Optical Astronomy Observatory Joseph I. Silk, Oxford University John T. Trauger, Jet Propulsion Laboratory Alistair R. Walker, Cerro Tololo Interamerican Observatory Bradley C. Whitmore, Space Telescope Science Institute Rogier A. Windhorst, Arizona State University Erick T. Young, University of Arizona Thanks The editor thanks Sylvia Baggett and Peter McCullough for major contributions in the areas of the UVIS post-flash and spatial scanning modes, respectively, and John Biretta, Matthew Bourque, Susana Deustua, Janice Lee, Knox Long, and Nor Pirzkal for providing information and suggestions for improvements to support the editing of this edition. Contributions to earlier editions were made by past and present members of the Science IPT and by ECF scientists Martin Kümmel, Harald Kuntschner, and Jeremy Brett. The contributions of Susan Rose (Senior Technical Editor) to the editing and production of this Instrument Handbook, as always, are greatly appreciated.