John MacKenty (Team Lead, WFC3 Deputy Instrument Scientist)
The editor thanks Sylvia Baggett, Susana Deustua, Knox Long, Jennifer Mack, Peter McCullough, Cheryl Pavlovsky, Larry Petro, Nor Pirzkal and Alan Welty for providing suggestions and information to support the limited 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.