Sep_21_1999_H61.txt Shift H61
        Start at 1999:265:08:30:00 GMT
                = 1999 Sep 22  4:30am EDT
        End       1999 Sep 22  7:00am EDT

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

Plan: Medium eclipse during real time contact, in rad belts
      Running P17b load.


EVENTS							    DONE	OBSID
--------------						    ----	-----
Start Shift                                             265:0830        62381
----- Real time------ DSS-24 (Goldstone)
In radiation belts, See note 1 for state
Start eclipse                                           265:0928
End eclipse                                             265:1032
Recover
  (see note 2)                                          265:1055
End of shift                                            265:1100

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

1) Chandra configuration at 265:0830 was nominal with parameters as follows:

       PCAD MODE   =        NPT
       Stars:      =          4  (Guide star in 4th of 5 slots trying to re-acquire)
       FIDS        =          0
       RA          = 268.200000
       DEC         = -61.500000
       ROLL        = -90.904436
       Format      =          2
       OBSID       =      62381
       SIM FA      =       -535
       SIM TSC     =     -99616 (HRC-S)
       HETGA       =       81.3 (OUT)
       HETGB       =       81.7 (OUT)
       LETGA       =       81.7 (OUT)
       LETGB       =       79.8 (OUT)

       ACIS        = VID Boards OFF
       HRC         = All HV OFF

2) Eclipse performance was again nominal, within predictions plus error bars. 
   The maximum bus voltage after eclipse exit was under 33.8 volts. Minimum
   bus voltage was about 28 volts.