To:sot_shift
from: Dan Schwartz
date: 06 Dec 01, 12:00noon EST
Subject: SOT shift report 2001-12-06 L868
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Dec_06_2001_L868.txt.

Shift L868. 
	Start at 340:13:00  GMT
		 = 08:00am    06 Dec EST
	End	   12:00 noon 06 Dec
   
SOT Lead	DAS
Spac/Aspect	
(Times will be given in GMT on day 340.)

PLAN
----
Continue running load DEC0401B. Perform OBSID 2845, the last of a
series of calibrations on E0102-72, then two more ACIS-S observations
of  RX J0720.4-3125, the second brightest nearby neutron star, to
measure its period derivative and hence derive its nature. A perigee
passage follows.

Next Comms:
 340:1300 to 1400
 340:2020 to 2205
 341:0500 to 0600
 341:1400 to 1500 
 342:0050 to 0150
 342:0750 to 0850
 342:1530 to 1630
 343:0200 to 0300
 343:1015 to 1115
 343:1945 to 2045

Orbital events:

 2001:341:01:51:06.084    322   ORBIT PERIGEE
 2001:342:09:34:21.745    323   ORBIT APOGEE 
 2001:343:17:18:29.578    323   ORBIT PERIGEE
 2001:345:01:02:06.663    324   ORBIT APOGEE 
 2001:346:08:45:35.747    324   ORBIT PERIGEE
 2001:347:16:29:41.033    325   ORBIT APOGEE 
 2001:349:00:13:59.971    325   ORBIT PERIGEE
 2001:350:07:57:35.026    326   ORBIT APOGEE

EVENTS
------
Status at AOS, 340:13:03, was as follows:
       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          3
       RA                     =     15.493 deg 
       Dec                    =    -71.852 deg
       ROLL                   =    307.142 deg
       Format                 =          2
       OBSID                  =       2845 E0102-72 Calibration
       SIM FA                 =       -467
       SIM TSC                =      75624 (ACIS-S)
       HETG                   =        OUT (79.46 deg)
       LETG                   =        OUT (77.96 deg)
        HRC-S HV is ON 
       EPHIN Geom             =       LARG
             E1300            =        0.0           LT 10.0 (RADMON
             P4GM             =        0.0           LT 300. Triggers)
             P41GM            =        0.0           LT 8.47
             A-leak           =     1.0200 mu-a
             B-leak           =     0.5880 mu-a
Descending through 100893 km. ACIS focal plane temperature -119.7. 


NOTES/ISSUES/PROBLEMS
From the 9am status meeting:
	Three supports in the last day. Goldstone-27 had to repeat
dumps to get all the data down with best quality.
	Email review was conducted of DEC1001B. There are some slight
position changes for the asteroid and TOO, and new star
catalogs. Products out later this morning with a load review possibly
at the 1pm slot but possibly later -- to be announced.
	Work has started on DEC1701 schedule.
	Final OR list for DEC2401 two week load is expected, and due,
on Monday.
	CAP to change momentum unloading deadzone on side B was
approved, expect to uplink this afternoon.
	ASVT testing of the SOP for the SIM Tab 2 crossing will take
place today. This is part of the Phase II "unsafe ACIS" recovery.

Quick look data:
No new quick look data. Due to multiple dumps, the NRT merge software
had a problem and produced a data stream where the VCDU counter was
not strictly monotonic. This is a known software problem which has
occured before, and the GOT has a procedure which will recover good
data for CXC Dataops.



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