To:sot_shift
from: Dan Schwartz
date: 03 Dec 99 , 12:00noon EST
Subject: SOT shift report, Shift L133
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Dec_03_1999_L133.txt.

Shift L133. 
	Start at 337:13:00  GMT
		 = 08:00am    03 Dec EST
	End	   12:00 noon 03 Dec
   
SOT Lead	DAS

(Times will be given in GMT on day 337. In general
times are rough, not precise.)

PLAN
Continue running load NOV2899e. Performing long observation of the 
S-Z cluster 1312+42.

Next Comms:
        337:14:30 to 15:15
        337:23:15 to 01:20
	338:07:45 to 09:25
	338:14:00 to 16:00
	338:22:00 to 00:00
	339:06:00 to 08:00
	339:14:00 to 16:00
	339:22:00 to 00:00

EVENTS

Status at LOS, 337:06:45, was as follows:
       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          0 
       RA                     =     240.045 deg 
       DEC                    =      70.008 deg
       ROLL                   =       7.561 deg
       Format                 =          2
       OBSID                  =      62288  (S-Z cluster 1312+42)

       SIM FA                 =      -467
       SIM TSC                =     75623 (ACIS -I)
       HETG                   =        OUT (80.6 deg)
       LETG                   =        OUT (79.1 deg)
   
14:30  AOS
15:15  LOS
Status at LOS, 337:15:15, was as follows:
       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 (one is intermittent)
       FIDS                   =          3
       RA                     =    198.088 deg 
       DEC                    =     42.669 deg
       ROLL                   =     46.986 deg
       Format                 =          2
       OBSID                  =        325  (ACIS CTI)

       SIM FA                 =      -535
       SIM TSC                =    -99616 (ACIS -I)
       HETG                   =        OUT (80.6 deg)
       LETG                   =        OUT (79.1 deg)

NOTES/ISSUES/PROBLEMS
/pool14/chandra/chandra.snapshot is not reading correctly, following
last night's false alarm, caused by being fed test data.

Notes from 9am status meeting:
	Explanation of last night's false alarm safe mode message to
SOT: GOT was configuring second string for ASVT testing between
contacts. Couldn't connect to telemetry server, so went to string 1 to
debug. This put ASVT test data into the CXC psicorp server. GOT
apologizes for causing alarms. Problem did delay ASVT testing of the
SI safing patches yesterday -- will be arranged today, using the PTP2
on string 2. 
	Load review for DEC0599 to be at noon today. Will also
incorporate the OR review for DEC1299. 
	Look ahead meetings: ACIS CTI telecon Monday, Dec 6, 4pm. Next
quarterly review to be arranged week of Jan 17. (We'll need MPS, CAL,
and D&OSS group inputs by COB Jan 7). 

Overnight, during the CTI measurements on belt exit, ACIS measured S2
in TE raw mode. Temperature of focal plane was back to -109.2 degC by
the 06:45 LOS. ACIS taking data with I2, I3, S2, S3, S4 during the
14:30 comm pass, OBSID 325.

For OBSID 325, star in slot 5 is intermittently being lost. This star
is reading about mag 7.66 in tracker magnitudes.  Its limit was 7.781
in the DOT.  For a star which is found in the correct position of the
ACA, there IS NO RATIONALE TO FAIL TO TRACK IT IF BRIGHTER THAN
EXPECTED, as long as it isn't so bright as to saturate the camera.

130-214 keV proton rates have been around 300 per (cm^2 sec MeV ster)
for the past 8 hours, following about 10 hours of flaring to several
1000.

New Quick look results:
Following all look good:
	OBSID 341 of NGC526a with ACIS S3
	OBSID 129 of 3C 58 with HRC-I
	OBSID 119 of 0540-69.3 with ACIS-S
	OBSID 1431 of Southern Deep Field with ACIS-I,S2
	OBSID 503 of A426 with ACIS-S -- image shows some structure
		which should be checked against dither pattern.
	OBSID 315 of N4038/4039 with ACIS-S
	OBSID 130 of PSR B0656+14 with HRC-LETG  -- don't see
		dispersion in image, which is cropped near core
	

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