SOT shift report 2001-06-14 M693
Start at 2001:165:20:30 GMT
       = 2001 Jun 14 04:30 pm EDT
End                  06:00 pm EDT


SOT Lead	Mark Freeman

Plan: finish OBSID 02040, NGC3115 2001:165:10:50, ACIS-S NONE - THE VERY
FAINTEST X-RAY FAINT EARLY-TYPE GALAXIES; resolve the LMXBs in these
galaxies in order to discover why these galaxies are producing
significantly fewer and/or less luminous LMXBs.

then OBSID 01563, NGC3923 2001:165:21:37, ACIS-S NONE - determine the
density distribution and temperature of the hot gas within this
early-type galaxy.

Manual LETG operations coming up:
Fri. Jun 15,  9:10 am EDT	LETG insertion
Fri. Jun 15, 11:10 pm EDT	LETG retraction


REAL TIME EVENTS				GMT	OBSID
----------------   				----	-----
Start shift					2030
AOS (DSS-66)					2100
Start clean telemetry (note 1)			2126
Chandra state nominal (note 2)			2128	01563		
:
LOS						2300

RADIATION SUMMARY				Observed Limit
-----------------				-------- -----
ACE 2 hr fluence 				6.50e6	 3.6e8.
CRM atten. Orbital fluence (since perigee)	7.56e7	 2.0e9.
Kp						1.3	 6

EPHIN rates (cts/cm^2-s-sr) at 21:28 GMT	OBSERVED RADMON limit
----------------------------------------	-------- -----------  
     E1300 (electrons, 2.64 - 6.18 MeV):	   0.0	  10.0 
     P4GM (protons, 5.0 - 8.3 MeV):		   0.4	 300.0 
     P41GM (protons, 41 - 53 MeV):		   0.0	   8.47 

Current ACE rates are moderately high but the accumulated fluence up to this
point in the orbit is low, as is the Costello index Kp, so there should be
no problem for the remainder of the orbit barring a huge increase in the rates.

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

(1) Telemetry data was very poor from DSS-66 at initial setup.  Several 
    things were tried to alleviate the problem, but to no avail.  Finally
    the bit rate was lowered to 148,480 and solid telemetry began flowing
    at 165:21:26.

(2) Chandra's state (normal manuever mode) was:

UTC 2001:165:21:28:21 (Jun14) f_ACE 1.06e+03 F_CRM 7.56e+07 Kp 1.3 R km 112968D
OBT 2001:165:21:28:02  CTUVCDU 11799421  OBC s/w NRML  FMT2_NORM   CPEstat NORM
OBT      108941282.68  ONLVCDU 11799376  OBC Errs   0
                                                     OBSID   1563  EPState  SUN
SIM TTpos   75623  HETG Angle 79.84  PCADMODE NMAN   RA   172.511  Bus V  31.02
SIM FApos    -467  LETG Angle 77.96  PCONTROL NPNT   Dec  -25.352  Bus I  26.97
                                     AOFSTAR  GUID   Roll 248.854
ACA Object FFFSSSSS    Dither  ENAB                                HRC-I HV OFF
ACA ImFunc TTTNNNNN    Dith Yang   4.78    Yaw Rate     38.50      HRC-S HV  ON
ACA CCD Temp  -10.4    Dith Zang   2.57    Pitch Rate -130.64      OBSMode NEXT
ACA Int Time  1.698                        Roll Rate    -1.13      Door OP UNAC
AOACSTAT         OK    FSS SunBeta  SUN                            Door CL UNAC
                       FSS Alfa   -0.73    Batt 1 SOC  100.00%
Avg HRMA Temp 70.61    FSS Beta   -9.35    Batt 2 SOC  100.00%  ACIS Stat7-0 66
Avg OBA Temp  51.21    SA Resolv  97.87    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   12.95   RadMon     ENAB
HRMA power    58.30    SCS 128   ACT       -Y SA Amps   13.72   EPHIN Geom LARG
OBA power    108.40    SCS 129   ACT       +Y SA Temp  108.17   E150       16.4
                       SCS 130   ACT       -Y SA Temp  108.44   E300        0.2
Roll Mom.   -15.320    SCS 107  INAC                            E1300       0.0
Pitch Mom.   -4.282   UpL Cmd Acc  35843   EPH A-Leak  1.0200   P4GM        0.3
Yaw Mom.      1.253   Cmd Rej A      125   EPH B-Leak  0.2080   P41GM       0.0

See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jun_14_2001_M693.txt