Aug_15_1999_M25.txt Shift M25
        Start at 1999:227:18:00:00 GMT
                = 1999 Aug 15 02:00pm EDT
        End       1999 Aug 15 10:00pm EDT

   
SOT Lead	Bill Podgorski
SOT SC/ACA	
FOT-SI		Eric Martin
HRC-SI		
ACIS-SI		Paul Plucinsky

Plan: Running on the daily load. Complete ACIS-S Off-axis effective
area measurements. Perform additional measurement at end of
observation 167.


EVENTS							    DONE	OBSID
--------------						    ----	-----
Start Shift                                             227:1800
ACIS-S Off-axis Effective Area 
     Start Y offset = 10.5 arcmin, Z offset = 0         227:1806          166
          (tracking 5 stars and 3 fids)
     ACIS Stop science                                  227:2109
     Set new OBSID                                                        167
     Maneuver to Y offset = 19 arcmin, Z offset = 0     227:2114 
          (got 5 stars and 3 fids)
     ACIS Stop science                                  228:0009         
Start CAP 279 to take more ACIS data at last            228:0012         1267
     pointing attitude

End shift                                               228:0200


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

1) Last planned run in daily load finished at 228:0009. Wrote CAP to
   start another ACIS run at same off-axis position. CAP 279 
   executed to do this. OBSID assigned by Paul Green = 1267.

2) Reviewed DOT for next load segment. In Optical axis determination
   procedure it was noted that first ACIS-S observation after rad belt passage 
   (OBSID = 1057) will produce 1Ksec of data instead of the intended 
   2Ksec. Bias time figured in was too little. Cal was consulted
   and approved.