Chapter 5: Coronagraphy, Polarimetry andGrism Spectroscopy 5.1 Coronagraphy 5.1.1 Coronagraphic Acquisitions 5.1.2 PSF Centering 5.1.3 Temporal Variations of the PSF 5.1.4 FGS Guiding 5.1.5 Cosmic Ray Persistence 5.1.6 Contemporary Flat Fields 5.1.7 Coronagraphic Polarimetry 5.1.8 Coronagraphic Decision Chart 5.2 Polarimetry 5.2.1 NIC 1 and NIC2 Polarimetric Characteristics andSensitivity 5.2.2 Ghost images 5.2.3 Observing Strategy Considerations 5.2.4 Limiting Factors 5.2.5 Polarimetry Decision Chart 5.3 Grism Spectroscopy 5.3.1 Observing Strategy 5.3.2 Grism Calibration 5.3.3 Relationship Between Wavelength and Pixel 5.3.4 Sensitivity 5.3.5 Intrapixel Sensitivity 5.3.6 Grism Decision Chart
