Sep_21_1999_M61.txt Shift M61
        Start at 1999:264:13:10 GMT = 1999 Sep 21 9:10am EDT
        End                           1999 Sep 20 5:00pm EDT

   
SOT Lead	Ed Kellogg
FOT-SI		
ACIS		
HRC-SI		

(Times: hhmm or ddd:hhmm, not precise.)

Plan: Continue with load 

EVENTS	day 264						DONE	OBSID
--------------						----	-----
LOS							1215
ACA records show 3 fids, 5 stars			1430	242
AOS, 3 fids, 5 stars					2000
Execute CAP 445 to upload new ACIS parameter file	2032	 22
As part of CAP 445 change OBSID				2039	62560


NOTES/ISSUES/PROBLEMS 
--------------------- 
S/C state at 1215:

       PCAD MODE= NPNT,KALM
       Stars:	= 5
       FIDS	= 3
       RA	= 266.4019 est.
       DEC	= -28.9860 est.
       ROLL	= 91.475 est.
       Format	= 2
       OBSID	= 242
       SIM FA	= -535
       SIM TSC	= 92903
       HETG	= 81, 82 (out)
       LETG	= 82, 80 (out)

It looks like we need a change in procedures for creating DOTs. For
runs scheduled by a series of ATS loads, where the OBSID is set at the
same time as the first stored command is executed, if that first
command is a "start science", the ACIS psci processing screws up. So
there should be a delay of, e.g., 5 seconds, between the OBSID change
and the execution of the first ATS command (paraphrased from an email
by Peter Ford on Mon, 20 Sep 99 17:47:31 EDT). SOT lead will inform
FOT & SOT mission planning.

We did CAP 445 to "overlay obsid 22 with correct science mode" for
ACIS. This is to correct the parameter file. 

Summary from 9 am meeting
-------------------------
Rino reported several thermal points were reading unphysical values,
located close to others that were normal. He will investigate with
flight SW to see if there is a readout problem.

We are reviewing PEA patch 39, the one to prevent loss of fidlites
from cosmic ray hits, in preparation for uploading it. We presently
plan the upload for the pass starting at 10 am Thursday, which gives
us ~4 hrs to execute the upload and activation, and monitor the
results. SOT lead is reviewing the patch documentation and will work
with Linda Yester, Eric Martin and Tom Aldcroft to prepare the CAP.