07/03/03 48821 CTB Converted to XML format This relation is used to identify the full time range of the planned Guide Star acquisition, and to report results of the actual acquisition. The first three fields are populated when the record is inserted into the table and the remaining fields are updated after gs acqisition processing. C14 GYYYYDDDHHMMSS where the time values match the gsa_start_time. C17 YYYY.DDD:HH:MM:SS, Commanded start of the GSACQ1 or REACQ event. C17 YYYY.DDD:HH:MM:SS, Allocated end of the REACQ event, or the end of the GSACQ1 event if num_pair is 1, or end of the GSACQ2 event if num_pair is 2. C17 YYYY.DDD:HH:MM:SS, time of the start of FGS guiding when takedata flag is first raised during the acquistion or blank if no telemetry or acq failure. C2 Guiding mode at end of acquisition. GY - gyro, FL - fine lock on both stars, FG - fine lock/gyro, CT - coarse track on both stars, CG - coarse track/ gyro. CT and CG are no longer allowed but old schedules allowed these modes. C12 GSFAIL keyword value or blank. The non-blank values are: TLMGAP - unknown due to missing telemetry; VEHSAFE - not attempted due to safing; SSLEXP - scan step limit exceeded on primary GS; SSLEXS - scan step limit exceeded on secondary GS; SREXCPn - search radius exceeded on primary GS of pair n; SREXCSn - search radius exceeded on secondary GS of pair n; NOLOCK - failed to obtain finelock on either GS. R4 (Seconds) time of telemetry gap that overlaps the acquisition window between gsa_start_time and gsa_end_time. I4 -1 = undetermined, 0 - failure, 1 - first pair is acquired, or 2 - second pair is acquired. I4 Dominant FGS number or 0, after acquisition. A zero value indicates a total failure. I4 Roll FGS number or 0, after acquisition. A zero value is either a planned FGS/GYRO mode or a failure to acquire both GSs. GSA_DATA_TYPE GS Acq Data Relation OPUS unique clustered nonclustered