WFPC2 Technical Instrument Report 98-04:

Proposed Modification to the WFPC2 SAA Avoidance Contour

-Biretta and Baggett

We have examined cosmic ray rates taken inside and around the South Atlantic Anomaly (SAA). Based on those results, we propose a new, slightly smaller WFPC2 SAA avoidance region. The new SAA contour should help improve HST scheduling efficiency with minimum impact to WFPC2 observations.

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