SOT shift report 2002-04-04 M987

Shift M987. 
	Start at 094:17:00  GMT
		   = 12:00 noon 04 Apr EST
	End	      2:00 pm   04 Apr
   
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_04_2002_M987.txt.

SOT Lead	Mark Freeman
(Times will be given in GMT on day 094.)

PLAN
----
Continue running load APR0302C. Finished ACIS-S observation of the
X-ray emitting late B-type star HD133880 with ACIS-I, obsid 2543.
Chandra now safed for perigee passage.  Next science observation is of
the complex cluster Abell 2147 (OBSID 3211) at 095:08:09 GMT.

Current radiation environment is very quiet (ACE EPAM P3 ~100) and the
solar activity forecast is low to moderate over the next 2-3 days.

Next Comms:
 094:1730 to 1830
 095:0230 to 0330
 095:1100 to 1300
 095:2100 to 2200
 096:0500 to 0600
 096:1500 to 1600
 096:2230 to 2330
 097:0720 to 0920
 097:1740 to 1840

Orbital events:
2002:095:01:53:02.677    367   ORBIT PERIGEE

2002:096:09:36:13.313    368   ORBIT APOGEE 
2002:097:17:20:21.888    368   ORBIT PERIGEE

2002:099:01:03:45.984    369   ORBIT APOGEE 
2002:100:08:47:09.593    369   ORBIT PERIGEE

EVENTS					TIME	OBSID
------					----	-----
Start shift				17:10
AOS (DSS-34)				17:34
Chandra status nominal			17:39	61244
LOS					18:30
End shift				18:30

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

1) Chandra's SOH just after AOS, from 'snapshot':

UTC 2002:094:17:39:37 (Apr 4) f_ACE 1.04e+02 F_CRM 2.20e+08 Kp 2.0 R km  76632D
OBT 2002:094:17:39:03  CTUVCDU 10210769  OBC s/w NRML  FMT2_EPS    CPEstat NORM
OBT      134329143.42  ONLVCDU 10210760  OBC Errs   2
                                                     OBSID  61244  EPState  SUN
SIM TTpos  -99616  HETG Angle 79.46  PCADMODE NPNT   RA   275.998  Bus V  30.08
SIM FApos    -535  LETG Angle 77.96  PCONTROL NPNT   Dec   -1.998  Bus I  31.53
                                     AOFSTAR  GUID   Roll  95.585
ACA Object SSSSSSSS    Dither  ENAB                                HRC-I HV OFF
ACA ImFunc TTTTTTTN    Dith Yang   7.91    Yaw Rate      0.18      HRC-S HV  ON
ACA CCD Temp  -10.4    Dith Zang  -7.44    Pitch Rate    0.06      OBSMode NEXT
ACA Int Time  1.698                        Roll Rate    -0.30      Door OP UNAC
AOACSTAT         OK    FSS SunBeta  SUN                            Door CL UNAC
                       FSS Alfa   -0.31    Batt 1 SOC  100.00%
Avg HRMA Temp 70.58    FSS Beta   -8.04    Batt 2 SOC  100.00%  ACIS Stat7-0 65
Avg OBA Temp  50.58    SA Resolv  97.99    Batt 3 SOC  100.00%  Cold Rad -125.5
OBA Tavg Fault NFLT    SA Sun Pres ILLM                         Warm Rad  -82.0
OBA Trng Fault NFLT                        +Y SA Amps   15.07   RadMon     DISA
HRMA power    65.00    SCS 128   ACT       -Y SA Amps   15.85   EPHIN Geom SMAL
OBA power    135.00    SCS 129   ACT       +Y SA Temp  112.66   E150    16243.9
                       SCS 130   ACT       -Y SA Temp  112.66   E300       94.7
Roll Mom.   -15.782    SCS 107  INAC                            E1300       0.0
Pitch Mom.    3.644   UpL Cmd Acc  35922   EPH A-Leak  0.4520   P4GM       13.0
Yaw Mom.      4.783   Cmd Rej A      209   EPH B-Leak  0.0880   P41GM       0.0

2) Current Radiation Data:

	Not important, currently descending thru belts and safed.