To:sot_shift
from: Dan Schwartz
date: 14 Apr 00 , 12:00noon EDT
Subject: SOT shift report, Shift L266
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_14_2000_L266.txt.

Shift L266. 
	Start at 105:12:00  GMT
		 = 08:00am    14 Apr EDT
	End	   12:00 noon 14 Apr
   
SOT Lead	DAS

(Times will be given in GMT on day 105. In general
times are rough, not precise.)

PLAN
Continue running load APR0900e. Finish OBSID 635, ACIS-I observation of
the rho Ophiuchus dark cloud. Then do ACIS-I observations of Ophiuchi
mosaic, OBSID 619; V1494 Aql, OBSID 959; ACIS-S of NGC 5055, OBSID
413; and ACIS-I of A1689, OBSID 540; and Virgo Cluster, OBSID
517. Then we will do ACIS CTI measurement on 106:11:34 prior to belt
entry. On belt exit, we will perform the real-time CAP 595 to do ACIS
squeegy mode Test II.

Next Contacts
 105:19:00 to 20:05
 106:05:10 to 07:10
 106:14:00 to 15:00
 106:22:20 to 02:30  ACIS Squeegy test II.
 107:06:00 to 07:00
 107:15:15 to 16:15
 108:00:30 to 01:15
 108:10:00 to 12:00
 108:20:45 to 21:45


EVENTS
Status at LOS, 105:10:48 was as follows:

       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          3
       RA                     =    246.834 deg 
       DEC                    =    -24.600 deg
       ROLL                   =     78.095 deg
       Format                 =          2
       OBSID                  =        635 (Rho Ophiucus Core)

       SIM FA                 =        535
       SIM TSC                =      92903 (ACIS-I)
       HETG                   =        OUT (80.2 deg)
       LETG                   =        OUT (78.7 deg)
        HRC-S HV is ON 
        EPHIN:         A-Leak =  0.3000 mu-a
                       B-Leak =  0.0480 mu-a
ACIS focal plane temperature at LOS was -119.7

14:25 Descending through 142693 km.


NOTES/ISSUES/PROBLEMS
Still no quick look data, since there are no OBSPAR files due to a
database problem.

Notes from the 9am status meeting:
	Three supports yesterday, 3 good SSR dumps, but antenna 46 had
to be used at 256 kHz as has been the case recently. They report
a signal strength 8db less than is expected -- this is not due to any
cause on Chandra. 
	Yesterday we ran CAP 563a to dump the CPE warm start count. It
is still reading 1 as expected.
	A review of CAP 595, for ACIS squeegy mode Test II, is planned
for 5pm this afternoon.
	APR1600c products are out, load review will be at 11am this morning.
	Products went out for the DEC1299 load, to test 8.1a. Load
review being planned, probably for 4pm this afternoon. 

Roger reported plans for accepting the next ONLS/OFLS revisions. The
ONLS rev 3.7 will be delivered April 17 (provisionally) and May 15
("official" delivery). It will be installed and verified on the third
string. The OFLS will deliver what is called 9.0 on May 22 -- but this
delivery will not contain ANY of the 9.0 content in Mission
Planning. So we have a low risk that OFLS problems will delay
promotion of 3.7 to the operating string. Then OFLS delivery 9.1,
which will contain all the planned release 9 content in Mission
planning area, will be delivered in late June, tested on the third
string, undergo three full load reviews as part of its test cycle, and
be installed in early Sept.

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