Chapter 3:
ACS Calibration
3.1 Pipeline Processing Overview
3.2 Structure of CALACS
3.2.1 Running CALACS
3.3 Keyword Usage
3.4 Calibration Steps
3.4.1 ACSCCD
3.4.2 ACS2D
3.4.3 ACSREJ
3.4.4 ACSSUM
3.5 OTFR - On The Fly Reprocessing
3.6 Manual Recalibration of ACS Data
3.6.1 Speed of Pipeline Processing
This chapter describes the ACS calibration pipeline software, CALACS. Developed at STScI, CALACS removes various instrumental signatures, combines multiple exposures, and updates header keyword values.
Many observers will eventually need to re-calibrate their ACS data in order to take advantage of calibration files which only become available after the observations have been taken. This chapter also provides the steps required for users to re-calibrate their ACS data.
