To:sot_shift
from: Dan Schwartz
date: 30 Apr 02, 12:00noon EDT
Subject: SOT shift report 2002-04-30 L1013
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_30_2002_L1013.txt.

Shift L1013. 
	Start at 120:12:00  GMT
		 = 08:00am    30 Apr EDT
	End	   12:00 noon 30 Apr
   
SOT Lead	DAS
(Times will be given in GMT on day 120.)

PLAN
----
Continue running load APR2902C. Finish OBSID 3346, ACIS-I observation
of the second of four pointings at the Lockman Hole-Northwest
(LH-NW). Then do obsid 3138, an ACIS-S observation of the nearby
aligned radio galaxy 3C 321, followed by perigee passage. 
No comm this shift.

Next Comms:
 120:1820 to 1920
 121:0500 to 0600
 121:1510 to 1610
 121:2300 to 0000
 122:0800 to 0900


Orbital events:
2002:121:12:30:09.351 EPERIGEE     377   ORBIT PERIGEE  
2002:122:20:13:27.213 EAPOGEE      378   ORBIT APOGEE 
2002:124:03:57:53.023 EPERIGEE     378   ORBIT PERIGEE  
2002:125:11:41:24.577 EAPOGEE      379   ORBIT APOGEE

EVENTS
------
Status at LOS, 120:11:59, was as follows:
       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          3
       RA                     =    158.504 deg 
       Dec                    =     57.497 deg
       ROLL                   =    235.871 deg
       Format                 =          2
       OBSID                  =       3346 LH-NW #5
       SIM FA                 =       -535
       SIM TSC                =      92903 (ACIS-I)
       HETG                   =        OUT (79.46 deg)
       LETG                   =        OUT (77.96 deg)
        HRC-I HV is ON 
       EPHIN Geom             =       LARG
             E1300            =        0.1           LT 10.0 (RADMON
             P4GM             =        0.5           LT 300. Triggers)
             P41GM            =        0.0           LT 8.47
             A-leak           =     1.0200 mu-a
             B-leak           =     0.5280 mu-a
Descending through 130782 km. ACIS focal plane temperature -119.7. 


NOTES/ISSUES/PROBLEMS
From the 9am status meeting:
	Three supports the last 24 hours, no problems. All dumps are
current. One load segment uplinked, on-board loads good through
124:13:40. 
	A TOO was approved, obsid 03493, to look at an "X-ray flash"
(XRF), identified by BeppoSAX. This will cause rework of the MAY0602
load. Products are expected out today for a load review tomorrow. The
email review of MAY0602A was very clean. 
	EPHIN hit 81 Deg F yesterday. The frequency of exceeding 80
deg, and the maximum temperatures reached, have decreased, due to
the Earth moving away from perihelion and to increased care by mission
planning to avoid excessively long intervals at unfavorable pitch
angles. 
	Simulation will be held today, starting about 10:30am
EDT. This will start with the team knowing we are in safe mode and
having acquired a block of DSN time for recovery, and will rehearse
the recovery process. 

Quick look data:

OBSID   Target           Time                        Comment
-----   ------           --------------              -------
3345   LH-NW-4		119:03:40   ACIS-I NONE		Looks good.
-------------------------------------------------------
Dan Schwartz,	MS #3
das@head-cfa.harvard.edu  
phone: (617)495-7232    FAX:   (617)495-7356
cell phone: (617)512-5627   
pager: 877-693-7198 PIN 693-7198
       or e-mail 6937198@archwireless.net
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