To:sot_shift
from: Dan Schwartz
date: 02 Dec 03, 12:00noon EST
Subject: SOT shift report 2003-12-02 L1594
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Dec_02_2003_L1594.txt.

Shift L1594. 
	Start at 336:13:00  GMT
		 = 08:00am    02 Dec EST
	End	   10:00am    02 Dec
   
SOT Lead	DAS
(Times will be given in GMT on day 336.)

PLAN
----
Continue running load DEC0103B. Performing obsid 3764, an HRC-S/LETG
observation of the chemically peculiar, isolated B star Mu Lep.

Next Comms:
336:1200 to 1400
336:1945 to 2045
337:0135 to 0235
337:1200 to 1300
337:1845 to 2045
338:0115 to 0215
338:1220 to 1420
339:0345 to 0445
339:1130 to 1255
339:2050 to 2150

Orbital events:
 2003:335:15:16:57.671    596       EPERIGEE      ORBIT PERIGEE
 2003:336:23:01:18.286    597       EAPOGEE       ORBIT APOGEE 
 2003:338:06:45:17.673    597       EPERIGEE      ORBIT PERIGEE
 2003:339:14:29:38.600    598       EAPOGEE       ORBIT APOGEE 
 2003:340:22:14:18.092    598       EPERIGEE      ORBIT PERIGEE

EVENTS
------
Status at LOS, 336:14:29, was as follows:
       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          3
       RA                     =     78.214 deg 
       Dec                    =    -16.229 deg
       ROLL                   =     15.558 deg
       Format                 =          1
       OBSID                  =       3764 Mu Lep
       SIM FA                 =       -990
       SIM TSC                =     -99616 (HRC-S)
       DITHER		      =	      ENAB 
       HETG                   =        OUT (79.46 deg)
       LETG                   =         IN ( 4.09 deg)
        HRC-S HV is ON 
       EPHIN Geom             =       LARG
	     E150	      =	      59.8
	     E300	      =	       1.1
             E1300            =        0.0           LT 10.0 (RADMON
             P4GM             =       77.7           LT 300. Triggers)
             P41GM            =        0.0           LT 8.47
             A-leak           =     1.0200 mu-a
             B-leak           =     0.7960 mu-a
Ascending through 122328 km. ACIS focal plane temperature -119.7. 


NOTES/ISSUES/PROBLEMS
From yesterday's telecon discussing EPHIN:  We will only perform
observations which strictly do not allow EPHIN to overheat, according
to prediction of the thermal modeling which Tan has done, in
combination with the absolute guidelines on limits to durations at
pitch angles between 80 and 110 degrees.  This will continue at least until we
have made and verified the patch to use HRC shield rates as a
surrogate radiation protection. Expected to take 4-6 weeks (?,
TBD).  Even after the patch is ready, we will need to decide if and
under what conditions we would expose EPHIN to further overheating.

P4GM seems erratic during the current comm pass. Went from 3.3 to 62
in ten minutes. Goes 4-9 proton rates started increasing at about 13:30.

From the 9am status meeting:
Four supports over the last day. No issues. One support in progress
being extended to complete playback.
DEC0803 products out later this morning, probably have a load review
tomorrow, (or possibly later than usual today).
Tomorrow we expect to have a requirements review for the patch to use
HRC as the RADMON trigger. Will meet in action room at 10am (to take
the place of the star working group). Expect draft requirements to be
sent out today. 

Quick look data:
OBSID   Target           Time                        Comment
-----   ------           --------------              -------
No New Quick look images this shift.


-------------------------------------------------------
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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