FOS Operation in the South Atlantic Anomaly


W. A. Baity, E. A. Beaver, J. B. Linsky and R. W. Lyons
Uni versity ofCalifor,nia, San Diego



FOS Instrument Science Report CAL/FOS-079

May 1992





Abstract

Operational boundaries defining the South Atlantic Anomaly (SAA), as
determined from FOS 0V 2748. are presented. The normal contour,
corresponding to a measured background rate of 0.04 counts/sec/diode,
is very similar to the normal operational boundary that we previously
determined for the GHRS. A bw background contour, which corresponds to
a rate of 0.02 counts/sec/diode has been established for special use
when a particularly bw background is required.