Chapter 6:
Polarimetry, Coronagraphy and Prism/Grism Spectroscopy

6.1 Polarimetry

6.1.1 Introduction

6.1.2 Performance of ACS Polarizers

6.1.3 Implementation of ACS Polarizers

6.1.4 Challenges and Limitations of ACS Polarimetry

6.2 Coronagraphy

6.2.1 Coronagraph Design

6.2.2 Acquisition Procedure and Pointing Accuracy

6.2.3 Vignetting and Flat Fields

6.2.4 Coronagraphic Performance

6.2.5 Subtraction of the coronagraphic PSF

6.2.6 The Off-Spot PSF

6.2.7 Occulting Spot Motions

6.3 Grism/Prism Spectroscopy

6.3.1 WFC G800L

6.3.2 HRC G800L

6.3.3 HRC PR200L

6.3.4 SBC PR110L

6.3.5 SBC PR130L

6.3.6 Observation Strategy

6.3.7 Extraction and Calibration of Spectra