Chapter 3:
Calibration
3.1 Pipeline Processing, OTFR, and the HST Archive
3.2 NICMOS Calibration Software
3.2.1 The Calibration Pipeline
3.2.2 Software for Grism Data Reduction
3.3 Basic Data Reduction: calnica
3.4 Mosaicing: calnicb
3.4.1 Input Files
3.4.2 Output Files
3.4.3 Processing
3.5 Recalibration
3.5.1 Why Recalibrate?
3.5.2 Recalibrating the Data
This chapter is designed to help you understand the steps that are performed on your data in the routine pipeline process and to help you decide whether you should recalibrate your data. In this chapter we:
- provide flowcharts and descriptions of the NICMOS pipeline calibration steps, and
- explain how to recalibrate your data using the calibration software in STSDAS.
The next chapter (chapter 4) will discuss a variety of NICMOS data anomalies which may require processing that goes beyond the standard calibration pipeline. You should read both chapter 3 and chapter 4 carefully before reducing your data in order to be fully aware of the relevant issues and to obtain the best results from your observations.
