Aug_14_1999_M24.txt Shift M24
        Start at 1999:226:19:00:00 GMT
                = 1999 Aug 14 03:00pm EDT
        End       1999 Aug 14 10:00pm EDT

   
SOT Lead	Bill Podgorski
SOT SC/ACA	Tom Aldcroft
FOT-SI		Eric Martin
HRC-SI		Ralph Kraft
ACIS-SI		Royce Buehler, Paul Plucinsky


EVENTS							    DONE	OBSID
--------------						    ----	-----
Start Shift                                             226:1900
ACIS-S Focus and Plate Scale Test per CAP 268
     Command to NPM                                     226:1913
     ACIS Stop science                                  226:1914
     Set new OBSID                                      226:1915        62556
     Download Huffman table (SCS 151)                   226:1917
     Move ISIM FOCUS to -0.100mm                        226:1925
          (172 steps to 105 steps)
     Start ACIS science (SCS 190)                       226:1930
          5000 second dwell
     ACIS Stop science (SCS191)                         226:2050
     Set new OBSID                                      226:2051        62555
     Download Huffman table (SCS 151)                   226:2053
     Move ISIM FOCUS to -0.300mm                        226:2058
          (105 steps to -30 steps)
     Start ACIS science (SCS 190)                       226:2058
          5000 second dwell
     ACIS Stop science (SCS191)                         226:2223
     Set new OBSID                                      226:2224        62554

     Download Huffman table (SCS 151)                   226:2225
     Move ISIM FOCUS to -0.700mm                        226:2229
          (-30 steps to -300 steps)
     Start ACIS science (SCS 190)                       226:2230
          5000 second dwell
Execute CAP 273 to load and enable command              227:0120
     to "reset" the ACA windows. 
ACIS Stop science (SCS191)                              227:0141
     End CAP 268
Start CAP 274 (maneuver CAP to shift pointing           227:0153
     to put target on aim point, acquire stars and
     all 3 FIDS)





End shift                                               227:0204


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

1) As noted on the previous shift report operation off the daily 
   load was suspended due to problems entering Normal Pointing
   Mode. A briefing was held on this plus the planned schedule
   activities for the next day. The problem was that the OBC 
   star acquisition failed in the case where we are trying to
   acquire a star already being tracked, but in a different
   ACA slot. Short and long term fixes are being developed.

2) Operations continued in real-time-command mode while the above
   problem was being resolved. The SIM motion test was performed
   and the ACIS-S Plate focus test started. The plan is to complete
   this test in real-time command via CAP 269, then pick up some
   time tomorrow AM with the daily load, starting at the ACIS-S
   off-axis effective area tests. 

3) It was noted in the Crude Boresight for ACIS-S tests
   (OBSID's 1051 and 1052) that the source was offset from the
   ACIS-S aim point. It was decided to perform a small maneuver
   between the SIM motion test and the ACIS-S Plate Focus.
   This maneuver is supposed to place the source on the aim point.