SOT shift report 2001-05-07 M655
Start at 2001:127:20:30 GMT
       = 2001 May 07 04:30pm EDT
End                  06:00pm EDT


SOT Lead	Mark Freeman

PLAN
----
Continue OBSID 01597, MKN 766 2001:127:03:40, ACIS-S HETG, HETG
OBSERVATIONS OF SEYFERT GALAXIES AND A QUASAR.

then OBSID 02333, HYDRA A 2001:128:05:19, ACIS-S HETG Central region
of the HYDRA A cluster of galaxies. Observe spatial structure (5 arc
second) and spectral structure (resolution of 100 at 1 keV); directly
determine whether or not a cooling flow is associated with the central
region of HYDRA A.

REAL TIME EVENTS				GMT	OBSID
----------------				----	-----
Start Shift					2030
AOS (DSS-54)					2100
Chandra status nominal (see note 2), 
although LOT on 1 star as noted by EMK today	2107	1597
End shift					2200

NOTES/ISSUES/PROBLEMS
--------------------- 
(1) Radiation - GOES 4-9 MeV proton rates have increased more than two 
    orders of magnitude over the last few hours, although levels are still
    well below trip limits for RADMON.  In telemetry, P4GM is currently ~10
    (limit 300.0) and P41GM is 0.3 (limit 8.47).  ACE rates have risen in
    the higher energy proton channels, although little is seen yet in the
    range most relevent to Chandra.  The HETG is inserted for the rest of
    this orbit, which will provide a significant buffer.

Current Data:

UTC 2001:127:21:07:10 (May 7) f_ACE 3.22e+01 F_ACE 2.87e+05 Kp 1.0 R km 134984A

                    Currently scheduled FPSI, OTG : ACIS-S HETG
                                      Costello Kp : 1.00
        ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 3.22e+01
                                 Orbit Start Time : 2001:126:20:54:01
              Geocentric Distance (km), Orbit Leg : 134885 A
                                       CRM Region : 3 (Magnetosphere)
           External Proton Flux (p/cm^2-s-sr-MeV) : 1.20991000000e+03
         Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 2.41982000000e+02
  External Proton Orbital Fluence (p/cm^2-sr-MeV) : 4.21682730000e+08
Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 3.45224328000e+07

(2) Chandra's state was:

UTC 2001:127:21:07:10 (May 7) f_ACE 3.22e+01 F_ACE 2.87e+05 Kp 1.0 R km 134984A
OBT 2001:127:21:06:32  CTUVCDU 15759231  OBC s/w NRML  FMT2_SSR    CPEstat NORM
OBT      105656792.87  ONLVCDU 15759216  OBC Errs   0
                                                     OBSID   1597  EPState  SUN
SIM TTpos   74423  HETG Angle  6.34  PCADMODE NPNT   RA   184.617  Bus V  30.40
SIM FApos    -467  LETG Angle 78.34  PCONTROL NPNT   Dec   29.842  Bus I  34.06
                                     AOFSTAR  GUID   Roll 224.606
ACA Object FFFSSSSS    Dither  ENAB                                HRC-I HV OFF
ACA ImFunc TTTTTTTN    Dith Yang   1.70    Yaw Rate      0.18      HRC-S HV  ON
ACA CCD Temp  -10.4    Dith Zang   3.09    Pitch Rate    0.08      OBSMode NEXT
ACA Int Time  1.698                        Roll Rate     0.15      Door OP UNAC
AOACSTAT         OK    FSS SunBeta  SUN                            Door CL UNAC
                       FSS Alfa    0.15    Batt 1 SOC  100.00%
Avg HRMA Temp 70.61    FSS Beta  -29.48    Batt 2 SOC  100.00%  ACIS Stat7-0 64
Avg OBA Temp  50.89    SA Resolv 119.96    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   16.44   RadMon     ENAB
HRMA power    62.60    SCS 128   ACT       -Y SA Amps   17.43   EPHIN Geom LARG
OBA power    197.00    SCS 129   ACT       +Y SA Temp  110.20   E150      122.2
                       SCS 130   ACT       -Y SA Temp  110.51   E300        1.8
Roll Mom.     2.518    SCS 107  INAC                            E1300       0.1
Pitch Mom.   -6.586   UpL Cmd Acc  42448   EPH A-Leak  0.9360   P4GM        9.3
Yaw Mom.      3.073   Cmd Rej A       56   EPH B-Leak  0.1680   P41GM       0.0

See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/May_07_2001_M655.txt