Nov_09_1999_L109.txt Shift L109
        Start at 1999:313:13:00:00 GMT
                = 1999 Nov 09  8:00am EST
        End       1999 Nov 09  1:00pm EST

   
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Nov_09_1999_L109.txt.



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

Plan: - Running P25d load, finish CTI observation 62318 at 313:13:16, 
        start observation 1248, HRC-S/LETG observation of Capella.


EVENTS							    DONE	OBSID
--------------						    ----	-----
Start Shift                                             313:1300        62318  
Out of contact at start of shift
Start Capella Observation                               313:1338         1248
AOS DSS-27                                              313:1541
State at AOS was nominal, see note 2
LOS                                                     313:1740
End of shift                                            313:1800


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

1) 9:00am Meeting Notes:
       - Added extra support day 315 for ACIS operations (2330 -0250)
       - Review by Dan Shropshire of CARD SYST-C-005 (Leonid meteors)
         revealed no mention of power. Therefore an ACIS-I deep field observation
         of 6 hr duration will be planned, centered in time on the
         expected meteor peak, and pointed in the anti-radiant direction. The solar
         array will not be off-pointed from the sun. It will be therefore be at an
         angle of about 2 degrees from the anti-radiant vector. It was not known (at
         the meeting) which side of the array will be exposed to the incoming meteors.
         (Wallace Jackson said that the solar side was preferred to be exposed). 
         The observation which had been planned (4 deg off the anti-radiant) prior
         to the decision to point along the anti-radiant may still be done, possibly
         in two time segments, one on either side of the meteor event. Mission planning
         will be contacted on this. This would provide even more safety.


2) Chandra's state at AOS:

       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5
       FIDS                   =          3
       RA                     =  79.210405 deg
       DEC                    =  45.990397 deg
       ROLL                   = 123.442727 deg
       Format                 =          1
       OBSID                  =       1248
       SIM FA                 =       -990 (HRC-S, modified from Char file)
       SIM TSC                =     -99616 (HRC-S)
       HETGA                  =      80.58 deg (OUT)
       HETGB                  =      81.33 deg (OUT)
       LETGA                  =       8.96 deg (IN)
       LETGB                  =       4.83 deg (IN)
       EPHIN A-leak           =     0.2640
             B-leak           =     0.0400

       ACIS                   =      In Event Hist mode
       HRC                    =      HRC-S IM HV OFF
                                           S  HV On, Top Stp =  90
                                                     Bot Stp = 102
                                           Shield 1 HV OFF
                                           Shield 2 HV ON, Step 8


3) Two quick-look images were given given to me by Joy Nichols, from observations
   395 (NGC3628) and 556 (Coma Cluster). Both images showed streaks near
   the center of each FI chip (not evident on the BI chip). I talked to Jim Francis and
   Glenn Allen of the ACIS team about the streaks. They are normal artifacts associated
   with cosmic ray events hitting the mid-chip boundary, and the observations looked
   normal, as far as they could tell by eye.

4) ACIS team is requesting real-time activity during next two passes. At 313:2200 COMM
   they will run CAP 502 to readout FEP0. At the 314:0600 pass thay will run commands
   to de-install the new FEP0 patch.