5. Photometric Calibration

• 5.1 Introduction
• 5.2 Photometric Model
• 5.3 Dark Current Subtraction
  • 5.3.1 Detector noise & dark current
  • 5.3.2 Dark current correction for band 2
• 5.4 The Relative Spectral Response Function (RSRF)
  • 5.4.1 RSRF measurements before launch
  • 5.4.2 In-orbit verification of the ILT RSRF
  • 5.4.3 Spline smoothing of residues
  • 5.4.4 RSRF calibration sources
  • 5.4.5 Accuracy of the RSRFs
  • 5.4.6 Overview of the RSRF curves
  • 5.4.7 Fabry-Pérot RSRF
• 5.5 Detector Response to the Internal Calibration Source
• 5.6 Grating Flat-fielding
• 5.7 Signal to Flux Conversion
  • 5.7.1 Astronomical Calibration Sources (ACS)
  • 5.7.2 Photometric calibration accuracy
• 5.8 Surface Brightness Derivation
• 5.9 The SWS Error Budget
  • 5.9.1 Sources of uncertainty
  • 5.9.2 The SWS photometric calibration error budget
  • 5.9.3 Reproducibility
  • 5.9.4 Overall error budget