Dec_21_1999_L151.txt Shift L151
        Start at 1999:355:13:00:00 GMT
                = 1999 Dec 21  8:00am EST
        End       1999 Dec 21 11:00am EST

   
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Dec_21_1999_L151.txt



SOT Lead	Bill Podgorski
SOT SC/ACA	
FOT-SI
HRC-SI
ACIS-SI
OTHER           

Plan: - Running load DEC1999C load. Uplink SI safing patches to CPU-B.


EVENTS							    DONE	OBSID
--------------						    ----	-----
Start Shift                                             355:1300         
AOS DSS-27 (Goldstone)                                  355:1425        62260
Chandra status at AOS (see note 1)
Upload SI Safing patch to OBC-B - start                 355:1510
LOS DSS-27                                              355:1553
End of shift                                            355:1600


NOTES/ISSUES/PROBLEMS 
--------------------- 

1) Chandra's state at AOS 355:1425 was:

                                       WAS                   EXPECTED
       PCAD MODE              =       NPNT                       NPNT
       CONTROL LAW FLAG       =       NPNT                       NPNT
       Stars:                 =          5                          5
       FIDS                   =          0                          0
       RA                     = 108.004115 deg              108.00410
       DEC                    = -65.199381 deg              -65.19937
       ROLL                   =  17.792705 deg               17.79270
       Format                 =          2                          2
       OBSID                  =      62260                      62260
       SIM FA                 =       -467                       -468
       SIM TSC                =     -99616 (HRC-S)             -99616
       HETGA                  =      80.96 deg (OUT)              OUT  
       HETGB                  =      81.33 deg (OUT)              OUT
       LETGA                  =      80.21 deg (OUT)              OUT
       LETGB                  =      79.08 deg (OUT)              OUT
       EPHIN A-leak           =     0.3520
             B-leak           =     0.0560
       HRC              SP PS =        OFF
                        IM PS =         ON
                  IM Top Step =          0
                  IM Bot Step =          0
                  Shield 1 HV =        OFF
                  Shield 2 HV =        OFF

       ACIS          FP Temp  =     -109.2 deg C
                      DEA Pwr =       53.6 watts
                      DPA Pwr =       41.0 watts
                   GSE Status =      Clocking data


2) 9:00am Meeting notes:
     - 2 supports yesterday, 1 long
     - 3 recorder dumps, 1 bad on DSS-27, able to recover and are all caught up
     - One weekly load segment uplinked
     - Continuous Dither testing completed successfully yesterday
     - ACIS FP temp reached -122.9 last night (see H151 rpt)

3) Note from yesterday's 9:00am
     - JPL network server failure caused non-retrievable loss of data,
       about 12.5 minutes, from 353:1603:06 to 353:16:15:40