Oct_23_2000_M459.txt Shift M459
        Start at 2000:297:16:00:00 GMT
                = 2000 Oct 23  12:00pm EDT
        End       2000 Oct 23 

SOT shift report 2000-10-23 M459
   
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Oct_23_2000_M459.txt


SOT Lead             Mark Freeman
SOT SC/ACA	    
FOT-SI              
HRC-SI  
ACIS-SI        
OTHER	

Plan: - Running OCT2300C load. Continue long observation of
        NGC 3227 with HRC-S/LETG (obsid 1591).

ORBITAL EVENTS:

 2000:297:04:18:04.314    167    ORBIT PERIGEE
 2000:298:12:01:08.884    168    ORBIT APOGEE 
 2000:299:19:44:54.990    168    ORBIT PERIGEE
 2000:301:03:28:19.579    169    ORBIT APOGEE 
 2000:302:11:11:15.610    169    ORBIT PERIGEE
 2000:303:18:55:21.125    170    ORBIT APOGEE 
 2000:305:02:38:39.797    170    ORBIT PERIGEE
 2000:306:10:22:37.192    171    ORBIT APOGEE 
 2000:307:18:06:52.029    171    ORBIT PERIGEE
 2000:309:01:50:14.645    172    ORBIT APOGEE 
 2000:310:09:34:31.506    172    ORBIT PERIGEE

EVENTS                                                      DONE     OBSID
--------------                                              ----     -----
Start Shift                                             297:1600

AOS DSS-24 (Goldstone 34m)                              297:1600      1591
Status at contact nominal (see note 1)
LOS							297:1700      1591
End of shift                                            297:1730

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

1) Chandra snapshot during contact:

UTC 2000:297:16:20:02 (Oct23) f_ACE 1.35e+01 F_ACE 0.00e+00 Kp 1.7 R km 101157A
OBT 2000:297:16:19:30  CTUVCDU 16715422  OBC s/w NRML  FMT1_NORM   CPEstat NORM
OBT       88705170.42  ONLVCDU 16715408  OBC Errs   0
                                                     OBSID   1591  EPState  SUN
SIM TTpos  -99616  HETG Angle  79.8  PCADMODE NPNT   RA   155.876  Bus V  30.55
SIM FApos    -990  LETG Angle   4.5  PCONTROL NPNT   Dec   19.839  Bus I  30.26
                                     AOFSTAR  GUID   Roll  57.500
ACA Object FFFSSSSS    Dither  ENAB                                HRC-I HV OFF
ACA ImFunc TTTTTTTT    Dith Yang -11.82    Yaw Rate      0.07      HRC-S HV  ON
ACA CCD Temp  -10.4    Dith Zang  -9.75    Pitch Rate    0.14      OBSMode OBSV
ACA Int Time  1.698                        Roll Rate    -0.10      Door OP UNAC
AOACSTAT         OK    FSS SunBeta  SUN                            Door CL UNAC
                       FSS Alfa    5.39    Batt 1 SOC  100.00%
Avg HRMA Temp 70.61    FSS Beta   29.25    Batt 2 SOC  100.00%  ACIS Stat7-0 65
Avg OBA Temp  51.29    SA Resolv  60.39    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   14.30   RADMON     ENAB
HRMA power    41.70    SCS 128   ACT       -Y SA Amps   15.66   EPHIN Geom LARG
OBA power     75.50    SCS 129   ACT       +Y SA Temp  112.97   E150        7.9
                       SCS 130   ACT       -Y SA Temp  113.28   E300        0.2
Roll Mom.   -14.306                                             E1300       0.0
Pitch Mom.   20.283   UpL Cmd Acc  13139   EPH A-Leak  0.7840   P4GM        0.0
Yaw Mom.     -6.686   Cmd Rej A       78   EPH B-Leak  0.1360   P41GM       0.0

2) Current Radiation Data:

UTC 2000:297:16:20:02 (Oct23) f_ACE 1.35e+01 F_ACE 0.00e+00 Kp 1.7 R km 101157A

                    Currently scheduled FPSI, OTG : HRC-S LETG
                                      Costello Kp : 1.67
        ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.35e+01
                                 Orbit Start Time : 2000:297:04:24:01
              Geocentric Distance (km), Orbit Leg : 101081 A
                                       CRM Region : 2 (Magnetosheath)
           External Proton Flux (p/cm^2-s-sr-MeV) : 1.16851953027e+03
         Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00
  External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.62497446452e+09
Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 0.00000000000e+00


3) ACA workstation (coot) had disk (/tlm/data) failure. Is being worked on
   now.  Plan is to replace it with a "refurbished" disk for the time being,
   to collect any telemetry data in the near future, while we purchase a
   new, larger, and presumably more reliable disk to replace it.  Dan will
   restore it from our most recent backup data (End 1999?) and then we
   will back this up plus any new data and transfer it to the new disk.
   As of the end of this shift, we have been unable to get the full chain
   of SCSI devices (including a replacement disk) to boot properly.
   He will talk to the service group (Polaris?) about getting a better
   replacement.