To:sot_shift
from: Dan Schwartz
date: 10 Mar 00 , 12:00noon EST
Subject: SOT shift report, Shift L231
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Mar_10_2000_L231.txt.

Shift L231. 
	Start at 070:13:00  GMT
		 = 08:00am    10 Mar EST
	End	   12:00 noon 10 Mar
   
SOT Lead	DAS
(Times will be given in GMT on day 070. In general
times are rough, not precise.)

PLAN
Continue running load MAR0500d. Continue HRC-S/LETG measurement of
RX J1856.5-3754 (OBSID 113), an old, isolated neutron star. This will
be followed by ACIS-S observations of SNR 292.0+01.8 (OBSID 126),  and
the large redshift, radio loud quasar BRI 0241-0146 (OBSID 875). 

Next Contacts:
        070:13:45 to 14:45
        070:20:20 to 22:20
        071:04:40 to 06:50
        071:14:00 to 16:00
        071:19:50 to 21:50
	072:09:30 to 11:20
	072:10:35 to 12:20
	072:16:45 to 17:45
	072:23:30 to 00:30
	073:06:00 to 07:20
	073:14:00 to 16:00

EVENTS
Status at LOS, 070:08:19 was as follows:

       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          3
       RA                     =    284.179 deg 
       DEC                    =    -37.928 deg
       ROLL                   =    101.586 deg
       Format                 =          1
       OBSID                  =        113 (RX J1856.5-3754)

       SIM FA                 =       -990
       SIM TSC                =     -99616 (HRC-S)
       HETG                   =        OUT (81.0 deg)
       LETG                   =         IN ( 4.5 deg)
        HRC-S HV is ON 
        EPHIN:         A-Leak =   0.3920 mu-a
                       B-Leak =   0.0640 mu-a

13:45 AOS
	Status is essentially the same. 
	Ascending through 129226 km.
14:45 LOS
	Status is essentially the same.
	Ascending through 131598 km.

NOTES/ISSUES/PROBLEMS
From the 9am status meeting:
	3 supports. All SSR data recovered in two dumps. The 66-Madrid
contact had a problem, switched to 54-Canberra, signal was not much
better. It is conjectured that DSN didn't have a accurate enough
ephemeris and was tracking on a sidelobe during this perigee
passage. Problem report has been filed.
	Eclipse went smoothly
	The OFLS patch 8.1 will be put on 3rd string as soon as
possible. It will be tested by rerunning the MAR1200 load -- CSC
believes it will clear up many of the problems seen in that load.

Quick look data:
OBSID 714, HRC/LETG observation of GX 17+2, looks good.
OBSID 768, ACIS-S observation of SN 1998s, looks good.
OBSID 719, HRC-I observation of Terzan 1, This is supposed to be a
		bright source, but is not visible. 
OBSID 359, ACIS-S observation of Cyg A, looks good.
OBSIDs 247, 259, 271, 283, 295, HRC-I monitoring of M31, all look good.


-------------------------------------------------------
Dan Schwartz,	MS #3
das@head-cfa.harvard.edu  
phone: (617)495-7232    FAX:   (617)495-7356
cell phone: (617)512-5627   
pager: 800-759-8352 PIN 1636502
       or e-mail 1636502@skytel.com 
-------------------------------------------------------