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Chapter 7
FOC
Error Sources
In This Chapter...
Overview of FOC Characteristics / 7-1
Nonlinearity / 7-2
Geometric Correction / 7-4
Flatfield Residuals / 7-5
Format-Dependent Sensitivity / 7-10
Background / 7-11
Filter Induced Image Shifts / 7-13
Errors in Absolute Photometry (f/96) / 7-14
Absolute Sensitivity of the f/48 Detector / 7-15
The pipeline processing described in the previous chapter attempts to remove most of the instrumental signatures of the FOC detector. Pipeline processing does not remove all of the instrumental features because some of the FOC's properties are either time dependent, varying in a random way that precludes correction, or else difficult to correct without introducing other errors. This section highlights some limitations of the pipeline calibration and certain other effects that the pipeline does not address.
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