The technical and operational information contained in this Handbook is the summary of the experience gained by members of the STScI ACS Branch, the ACS group at ST-ECF and by the ACS IDT. The ACS IDT is Holland Ford (PI), Garth Illingworth (Deputy PI), George Hartig, Mark Rafal, Frank Bartko, Tom Broadhurst, Bob Brown, Chris Burrows, Ed Cheng, Mark Clampin, Jim Crocker, Paul Feldman, Marijn Franx, David Golimowski, Randy Kimble, John Krist Tom La Jeunesse, Mike Lesser, Doug Leviton, George Miley, Marc Postman, Piero Rosati, Bill Sparks, Pam Sullivan, Zlatan Tsvetanov, Paul Volmer, Rick White, Bob Woodruff, David Ardila, Narciso Benitez, John Blakeslee, Rychard Bouwens, Larry Bradley, Nicholas J.G. Cross, Ricardo Demarco, Tomotsugu Goto, Caryl Gronwall, Brad Holden, Nicole Homeier, André Martel, Simona Mei, Felipe Menanteau, Gerhardt Meurer, Veronica Motta, Marco Sirianni and Hien Tran. The ST-ECF ACS group is Jeremy Walsh, Anna Pasquali and Norbert Pirzkal. The contributions of Warren Hack, Alan Welty and Susan Rose are also greatly appreciated.

ACS Instrument Branch at STScI

Name	Title	Phone	e-mail
Roeland Van der Marel	Instrument Scientist	(410)338-4931	marel@stsci.edu
John Biretta	Instrument Scientist	(410)338-4917	biretta@stsci.edu
Ralph Bohlin	Instrument Scientist	(410) 338-4804	bohlin@stsci.edu
Andrew Fruchter	Instrument Scientist	(410) 338-5018	fruchter@stsci.edu
Mauro Giavalisco	Instrument Scientist	(410) 338-4804	mauro@stsci.edu
Ron Gilliland	Instrument Scientist	(410)338-4366	gillil@stsci.edu
Shardha Jogee	Instrument Scientist	(410) 338-4349	jogee@stsci.edu
Anton Koekemoer	Instrument Scientist	(410) 338-4815	koekemoer@stsci.edu
Adam Riess	Instrument Scientist	(410) 338-4509	ariess@stsci.edu
Marco Sirianni	Instrument Scientist	(410) 338-4810	sirianni@stsci.edu
Colin Cox	Systems Analyst	(410) 338-4792	cox@stsci.edu
Richard Hook (ST-ECF/ESO)	Science Software Specialist	(410)338-4980	hook@stsci.edu
John Krist	Optical Analyst	(410) 338-4901	krist@stsci.edu
Shireen Gonzaga	Data Analyst	(410)338-4412	shireen@stsci.edu
Inge Heyer	Data Analyst	(410)338-5017	heyer@stsci.edu
Jennifer Mack	Data Analyst	(410)338-4565	mack@stsci.edu
Max Mutchler	Data Analyst	(410) 338-1321	mutchler@stsci.edu
Cheryl Pavlovsky	Data Analyst	(410) 338-4339	cherylp@stsci.edu
Vera Platais	Data Analyst	(410) 338-4339	verap@stsci.edu