To:sot_shift
from: Dan Schwartz
date: 09 Mar 00 , 12:00noon EST
Subject: SOT shift report, Shift L230
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Mar_09_2000_L230.txt.

Shift L230. 
	Start at 069:13:00  GMT
		 = 08:00am    09 Mar EST
	End	   12:00 noon 09 Mar
   
SOT Lead	DAS
(Times will be given in GMT on day 069. In general
times are rough, not precise.)

PLAN
Continue running load MAR0500d. Descending into radiation belts, all
SI should be off. Resume ACIS CTI measurements at 069:23:26, and
resume science pointings at 070:03:38 with HRC-S/LETG observations of
NGC 6624 (OBSID 98) and RX J1856.5-3754 (OBSID 113).

Next Contacts:
        069:15:05 to 16:55
        069:21:45 to 23:50
        070:07:20 to 08:20
        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

EVENTS
Status at LOS, 069:08:09 was as follows:
       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          3
       RA                     =    267.715 deg 
       DEC                    =    -31.298 deg
       ROLL                   =     90.307 deg
       Format                 =          1
       OBSID                  =        720 (Capella)

       SIM FA                 =       -715
       SIM TSC                =     -50505 (HRC-I)
       HETG                   =        OUT (81.0 deg)
       LETG                   =        OUT (79.1 deg)
        HRC-I HV is ON 
        EPHIN:         A-Leak =   0.3680 mu-a
                       B-Leak =   0.0600 mu-a
AOS 15:06
Status at AOS, 069:15:08 was as follows:
       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          0
       RA                     =    257.394 deg 
       DEC                    =    -30.928 deg
       ROLL                   =     84.959 deg
       Format                 =          2
       OBSID                  =      62131 (ACIS CTI


       SIM FA                 =       -715
       SIM TSC                =     -99616 (HRC-S)
       HETG                   =        OUT (81.0 deg)
       LETG                   =        OUT (78.7 deg)
        HRC-I HV is ON 
        EPHIN:         A-Leak =   0.4800 mu-a
                       B-Leak =   0.0720 mu-a
Descending through  43004 km.

LOS 16:55 
	Status essentially unchanged.
        EPHIN:         A-Leak =   0.69600.4800 mu-a
                       B-Leak =   0.11600.0720 mu-a
	Descending through 25545 km.

NOTES/ISSUES/PROBLEMS
Notes from 9am status:
	2 supports, 2 dumps, uplinked 1 load segment. Load good until
073:07:20. Next eclipse will be around 069:19:30 (incorrectly reported
as 069:07:30 in L229 report). Eclipse will take place out of comm -- 
eclipses are now considered routine.
	Load review of MAR1200 identified some minor cleanups which
have been done. New products out this morning, and a "mini" review
scheduled for 3pm (EST) this afternoon. 
	SCS 105 has finished ASVT testing. HRC team is reviewing
commands prior to their approval. The RADMON K-constant change patch
(to increase the EPHIN P4GM threshold for triggering safe mode, so
that we can decrease the rad belt pad time to 10 Ksec) is delivered
and will be tested on ASVT later today.

Quick look data:
OBSID 348, ACIS-S observation of NGC 4151, looks good.
OBSID 349, ACIS-S observation of NGC 4258, looks good.
OBSID 769, ACIS-S observation of Crab Nebula, 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: 800-759-8352 PIN 1636502
       or e-mail 1636502@skytel.com 
-------------------------------------------------------