To:sot_shift
from: Dan Schwartz
date: 10 Aug 99, 6am EDT
Subject: SOT shift report, Shift H19
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Aug_09_1999_H.txt.

Shift H19, (A19). 
	Start at 22:02:00  GMT
		 = 09:00pm 5 Aug EDT
	End	   06:00am 5 Aug
   
SOT Lead	DAS
Spac/Aspect	RAC
FOT/Sci liason	
HRC		EJ,GA,JHC 
ACIS 		RB,YB

(Times will be given in GMT on day 222. In general
times are rough, not precise.)

PLAN
Get ACIS bias frames down in Format 2.  (DONE)
Go to Format 4/5, do OBC-A on-orbit load (DONE)
Run CAP 91A to reacquire 4 fid lights, 4 monitor windows. (DONE)
Start ACIS background measurements after OnOrbit load is complete. (DONE)
Run CAP 206 for disabling HRC HV SCS's 87, 88, 89, 90, 91, 92,93. (DONE) 
CAP 70 step 1, enable RADMON
uplink SCS 129 radiation belt shutdown.

EVENTS
~03:00 run CAP 91A, get 4 fid lights in the correct windows.
In Format 2 running OBSID 62708 to get ACIS background data.
	This will be interupted for OBC on-orbit load.
04:15  Stop ACIS science run, ends OBSID 62708
04:22  Change to FORMAT 4.  
04:41  OBC-A selected, halted, in-load. 
~06:00 Go to format 5
06:10 Run CAP 206, disable HRC HV SCS's
~07:40  switch to FORMAT 4.

Do a bias update (for the low rate gyros -- use manufacturers
specs), AND an attitude update.  

09:18  Back to format 2, OBSID 62707. Resume ACIS runs to measure
  orbital background.



NOTES/ISSUES/PROBLEMS
During the OBC-A load we anticipated that the OBSID would be
reset to zero.  Therefore we did a Stop Science command
to ACIS to end OBSID 62708 early. After returning to format
2 from format 4/5, we continued with OBSID 62707. 

GRETA is up and running at the SOT LEAD/ACA station.

Problems running CAP 207 on CPE demonstration. Problems with 
  commanding zero pulse widths to VDE.  Another CAP generated to 
  allow proceeding.

Vacuum monitor reads 7.8 10^-6.  Sometimes fluctuates down
to 7.4.

The Ball patch for fid lights was received from the TRW SMF.
However, when the OFLS built the command load, only the first
of the four vectors were created.  Previously this problem
had been noted and fixed for OBC patches; It must be fixed
(if not working) for the ACA, SIM, and IEPHIN as well.
-------------------------------------------------------
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 
-------------------------------------------------------