SOT Shift Report

Shift M264
Duration:	12 Apr 2000 15:00 EDT - 12 Apr 2000 17:00 EDT
		12 Apr 2000 19:00 GMT - 12 Apr 2000 21:00 GMT

SOT Lead:           Tom Aldcroft
Spacecraft/Aspect:  
FOT/Science Liason: 
HRC:                
ACIS:               

========================================

Plan
----
Continue with APR0900b load:

 T_E94        CAL-ER 2000:103:19:12:23.220   7.8   --    --  <- Current
 T_X95        CAL-ER 2000:104:07:15:22.129   9.4   --    -- 
 00102      VELA X-1 2000:104:10:10:28.698  29.0 ACIS-S HETG
 00635  RHO OPH CORE 2000:104:18:59:44.183 101.5 ACIS-I NONE

Events
------
19:50	AOS on DSS-46
20:36	Reducing data rate to 256k
20:50	LOS


Notes/Issues/Problems
---------------------
- Had trouble with dump.  SNR dropped ~6 dB each time a dump is started.  Tried
 different telemetry group, to no avail.  After changing to 256k, SNR drop is ~3
 dB when dump starts.

- ACIS focal plane temperature:
     -119.7 C at 20:40.  
     -119.5 C at 21:17.  
     -119.7 C at 21:36.  

Snapshot
--------
Looks fine:

UTC 2000:103:20:32:01 (Wed Apr 12) f_ACE 2.84e+01  F_ACE 7.03e+06  R km  72425D
OBT 2000:103:20:31:34  CTUVCDU  1694975  OBC s/w NRML  FMT2_NORM   CPEstat 
OBT       71958694.58  ONLVCDU  1694960  OBC Errs   0
                                                     OBSID  62086  EPState  SUN
SIM TTpos  -99616  HETG Angle  80.2  PCADMODE NPNT   RA   267.994  Bus V  30.71
SIM FApos    -467  LETG Angle  78.7  PCONTROL NPNT   Dec  -60.002  Bus I  32.03
                                     AOFSTAR  GUID   Roll  73.848
ACA Object SSSSSSSS    Dither  ENAB                                HRC-I HV OFF
ACA ImFunc TTTTTNNN    Dith Yang  -7.89    Yaw Rate      0.19      HRC-S HV  ON
ACA CCD Temp  -10.4    Dith Zang  -7.77    Pitch Rate    0.11      OBSMode NEXT
ACA Int Time  1.698                        Roll Rate     0.07      Door OP UNAC
AOACSTAT         OK    FSS SunBeta  SUN                            Door CL UNAC
                       FSS Alfa   -0.38    Batt 1 SOC  100.00%
Avg HRMA Temp 70.58    FSS Beta  -19.74    Batt 2 SOC  100.00%  ACIS Stat7-0 65
Avg OBA Temp  50.89    SA Resolv 109.58    Batt 3 SOC  100.00%  Cold Rad -127.9
OBA Tavg Fault NFLT    SA Sun Pres ILLM                         Warm Rad  -82.0
OBA Trng Fault NFLT                        +Y SA Amps   15.26
HRMA power    73.80                        -Y SA Amps   16.44   EPHIN Geom LARG
OBA power    101.20                        +Y SA Temp  112.35   E1300         1
                                           -Y SA Temp  112.04   P4GM          0
Roll Mom.     9.019    SCS 128                                  P41GM         0
Pitch Mom.   -6.601    SCS 129             UpL Cmd Acc  10260   A-Leak   0.4360
Yaw Mom.      4.943    SCS 130             Cmd Rej A      128   B-Leak   0.0680