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Hubble Space Telescope
FGSPlot Tool

Tool to display a variety of FGS quantities (the location of the FGS Instantaneous Field of View in time as a function of x or y, the fine error signal, the photon counts v. time, etc.). Requires the raw GEIS files as input. Essential for analyzing failed observations and for retrieving useful information from marginal observations.

For information on how to retrieve fgsplot, please contact the STScI Help Desk at