Acknowledgments

The technical and operational information contained in this Handbook is the summary of the experience gained by past and present members of the STScI ACS Team, the ACS group at the former Space Telescope European Coordinating Facility (ST-ECF), and by the ACS Instrument Definition Team (IDT).

Members of the STScI ACS Team are:
Jenna Ryon (Lead), Gagandeep Anand, Jay Anderson, Tri Astraatmadja, Roberto Avila, Marco Chiaberge¹, Christopher Clark¹, Yotam Cohen, Alyssa Guzman, Dean Hines, Ray Lucas, Meaghan McDonald, and David Stark.

Past members of the STScI ACS Team are:

Amber Armstrong, Luigi Bedin, Andrea Bellini, John Biretta, Francesca Boffi, Ralph Bohlin, David Borncamp, Mark Clampin, Dan Coe, Colin Cox, Guido De Marchi, Tyler Desjardins, Susana Deustua, Daiana Dinino, Van Dixon, Linda Dressel, Brian Ferguson, Andrew Fruchter, Mauro Giavalisco, Ron Gilliland, David Golimowski, Shireen Gonzaga, Norman Grogin, George Hartig, Nimish Hathi, Inge Heyer, Samantha Hoffmann, Richard Hook, Shardha Jogee, Anton Koekemoer, John Krist, Pey-Lian Lim, Jennifer Mack, Jesus Maiz-Apellaniz, Aparna Maybhate, Matt McMaster, Nathan Miles, Max Mutchler, Sara Ogaz, Melanie Olaes, Cheryl Pavlovsky, Vera Platais, Blair Porterfield, Charles Proffitt, Adam Riess, Russell Ryan, Kailash Sahu, Ken Sembach, Marco Sirianni, Linda Smith, Josh Sokol, Bill Sparks, Anatoly Suchkov, Deepashri Thatte, Leonardo Ubeda, Roeland van der Marel, Doug van Orsow, and Nolan Walborn

The ST-ECF ACS group comprised Martin Kuemmel, Harald Kuntschner, and Jeremy Walsh. The ST-ECF ceased operations on December 31, 2010.

The ACS IDT comprised 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, Terence Allen, Kenneth Anderson, David Ardila, Narciso Benitez, John Blakeslee, Rychard Bouwens, Larry Bradley, Nicholas J.G. Cross, Ricardo Demarco, Tomotsugu Goto, Caryl Gronwall, Brad Holden, Nicole Homeier, Daniel Magee, André Martel, W. Jon McCann, Simona Mei, Felipe Menanteau, Gerhardt Meurer, Veronica Motta, Alessandro Rettura, Marco Sirianni, Hien Tran, and Andrew Zirm.

The contributions of Michele de la Peña, Warren Hack, Alan Welty, Tom Wheeler, and Susan Rose (Sr. Technical Editor) are greatly appreciated.

¹ European Space Agency (ESA)

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ACS Instrument Handbook
- • Acknowledgments
- • Change Log
- • Chapter 1: Introduction
- Chapter 2: Considerations and Changes After SM4
  - • 2.1 SM4 Repair of ACS
  - • 2.2 ACS/WFC Observations in Cycle 33 and Beyond
  - • 2.3 Comparison of WFC and UVIS
  - • 2.4 Comparison of HRC and UVIS
  - • 2.5 Dithering Considerations
  - • 2.6 CTE Considerations
  - • 2.7 SBC Considerations
- Chapter 3: ACS Capabilities, Design and Operations
  - • 3.1 ACS Location in the HST Focal Plane
  - • 3.2 Instrument Capabilities
  - • 3.3 Instrument Design
  - • 3.4 Basic Instrument Operations
  - • 3.5 ACS Quick Reference Guide
- Chapter 4: Detector Performance
  - • 4.1 Overview
  - • 4.2 The CCDs
  - • 4.3 CCD Operations and Limitations
  - • 4.4 The SBC MAMA
  - • 4.5 SBC Operations and Limitations
  - • 4.6 SBC Bright-Object Limits
- Chapter 5: Imaging
- Chapter 6: Polarimetry, Coronagraphy, Prism and Grism Spectroscopy
  - • 6.1 Polarimetry
  - • 6.2 Coronagraphy
  - • 6.3 Grism and Prism Spectroscopy
- Chapter 7: Observing Techniques
  - • 7.1 Designing an ACS Observing Proposal
  - • 7.2 SBC Bright Object Protection
  - • 7.3 Operating Modes
  - • 7.4 Patterns and Dithering
  - • 7.5 A Road Map for Optimizing Observations
  - • 7.6 CCD Gain Selection
  - • 7.7 ACS Apertures
  - • 7.8 Specifying Orientation on the Sky
  - • 7.9 Parallel Observations
  - • 7.10 Pointing Stability for Moving Targets
- Chapter 8: Overheads and Orbit-Time Determination
  - • 8.1 Overview
  - • 8.2 ACS Exposure Overheads
  - • 8.3 Orbit Use Determination Examples
- Chapter 9: Exposure-Time Calculations
  - • 9.1 Overview
  - • 9.2 Determining Count Rates from Sensitivities
  - • 9.3 Computing Exposure Times
  - • 9.4 Detector and Sky Backgrounds
  - • 9.5 Extinction Correction
  - • 9.6 Exposure-Time Examples
  - • 9.7 Tabular Sky Backgrounds
- Chapter 10: Imaging Reference Material
  - • 10.1 Introduction
  - • 10.2 Using the Information in this Chapter
  - 10.3 Throughputs and Correction Tables
    - • WFC F435W
    - • WFC F475W
    - • WFC F502N
    - • WFC F550M
    - • WFC F555W
    - • WFC F606W
    - • WFC F625W
    - • WFC F658N
    - • WFC F660N
    - • WFC F775W
    - • WFC F814W
    - • WFC F850LP
    - • WFC G800L
    - • WFC CLEAR
    - • HRC F220W
    - • HRC F250W
    - • HRC F330W
    - • HRC F344N
    - • HRC F435W
    - • HRC F475W
    - • HRC F502N
    - • HRC F550M
    - • HRC F555W
    - • HRC F606W
    - • HRC F625W
    - • HRC F658N
    - • HRC F660N
    - • HRC F775W
    - • HRC F814W
    - • HRC F850LP
    - • HRC F892N
    - • HRC G800L
    - • HRC PR200L
    - • HRC CLEAR
    - • SBC F115LP
    - • SBC F122M
    - • SBC F125LP
    - • SBC F140LP
    - • SBC F150LP
    - • SBC F165LP
    - • SBC PR110L
    - • SBC PR130L
  - • 10.4 Geometric Distortion in ACS
- • Glossary

Acknowledgments

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