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Chapter 11
FGS Calibration
In This Chapter...
The Visit / 11-1
Initial Data Processing / 11-2
POSITION Mode Pipeline / 11-3
TRANSFER Mode Pipeline / 11-7
POSITION Mode Pipeline Output / 11-8
This chapter describes how FGS data are calibrated. Unlike the data from other HST instruments, FGS astrometry data are not calibrated automatically. Observers now require the assistance of the FGS team at STScI and the Space Telescope Astromety Team (STAT) at the University of Texas to process astrometry science data through the FGS pipeline. However, efforts are underway at STScI to provide IRAF/STSDAS tools that will enable observers to easily calibrate data using the current best set of calibration reference files and algorithms. These tools may eventually evolve into a fully automatic pipeline that generates and archives calibrated FGS astrometry data. Check STScI's FGS web pages for updates.
STScI acknowledges the contribution of the STAT in the design, development, and maintenance of the astrometry data processing pipeline. This pipeline has been in use since the beginning of the HST mission and has evolved into a robust and reliable tool that has processed more than 7,000 individual FGS astrometry observations.
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Last updated: 11/13/97 16:54:46