To:sot_shift
from: Dan Schwartz
date: 28 Aug 00, 12:00noon EDT
Subject: SOT shift report 2000-08-28 L403
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Aug_28_2000_L403.txt.

Shift L403. 
	Start at 241:12:00  GMT
		 = 08:00am    28 Aug EDT
	End	   12:00 noon 28 Aug
   
SOT Lead	DAS
Spac/Aspect	
FOT/Sci liason	
HRC		
ACIS 		

(Times will be given in GMT on day 241. In general
times are rough, not precise.)

PLAN
----
In perigee passage at the end of AUG2000 load. Start AUG2700b load
with ACIS-S observations of the cooling flow cluster of galaxies PKS
0745-191, OBSID 508, and then the Si rich SNR ejecta VELA Shrapnel A, OBSID 727.

Next Comms:
	241:18:00 to 19:00
	242:03:00 to 04:00
	242:10:00 to 11:00
	242:18:50 to 20:50
	243:06:30 to 07:30
	243:17:00 to 19:00

Orbital events:
2000:241:15:36:26.084    146       EPERIGEE      ORBIT PERIGEE


EVENTS
------
Status at LOS, 241:09:59, was as follows:
       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          0
       RA                     =    176.848 deg
       DEC                    =    -44.361 deg
       ROLL                   =    203.473 deg
       Format                 =          2
       OBSID                  =      61951 ACIS CTI
       SIM FA                 =       -467
       SIM TSC                =     -99616 (HRC-S)
       HETG                   =        OUT (80.2 deg)
       LETG                   =        OUT (78.3 deg)
        HRC-I HV is ON 
       EPHIN Geom             =       LARG
             E1300            =        0.0           LT 10.0 (RADMON
             P4GM             =        0.3           LT 300. Triggers)
             P41GM            =        0.0           LT 8.47
             A-leak           =     0.6920 mu-a
             B-leak           =     0.1200 mu-a
Descending through 64007 km. ACIS focal plane temperature -119.9. 

No Comm this shift.

NOTES/ISSUES/PROBLEMS
From the 9am status meeting:
	Over the weekend, 8 supports, 9 dumps, SSR is
current. Uplinked two load segments, good through 244:05:20
	HETG retraction in load ~240:20: went very well.
	Mission planning products for SEP0300 expected later today for
first review tomorrow.
	FOT is assessing use of 8 guide stars during perigee passage, to
alleviate the star lock losses we are seeing. These losses are
presumed due to radiation. Eight stars provides more margin against
going to bright star hold.

Quick look data:

OBSID   Target           Time                        Comment
-----   ------           --------------              -------
00646  SS CYGNI		237:10:45 ACIS-S HETG	Good. Dispersed spectra.
00428  NGC 1275		238:00:35 ACIS-S HETG   Good. Dispersed 
01802  Q0836+7104	238:07:59 ACIS-S HETG	Good. Dispersed
49896  ABELL 1835	238:12:31 ACIS-S HETG	Good. Spectra not
					apparent in this short segment.
00312  M31 TRANSIENT	240:20:26 ACIS-I NONE	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 
-------------------------------------------------------