To:sot_shift
from: Dan Schwartz
date: 23 Aug 99, 10:00pm EDT
Subject: SOT shift report, Shift M33
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Aug_23 _1999_M33.txt

Shift Mxx
	Start at 235:18:00  GMT
		 = 02:  pm 2  Aug EDT
	End	   10:00pm 2 Aug
   
SOT Lead	DAS
Spac/Aspect	RAC
FOT/Sci liason	ERM
HRC		
ACIS 		PPP,LT

(Times will be given in GMT on day 235. In general
times are rough, not precise.)

PLAN
Continue operation under P5P6 load. 
Seamlessly start running under P7 load at 235:22:12:07.08
	which is already on-board Chandra.

EVENTS
Start of shift, running OBSID 138. LOS until 23:05.
23:06 AOS at Madrid. 3 fid lights, 5 stars. OBSID 1090 
	Running on load p7
23:10  ACIS stop science 
23:13  New OBSID, 1087
23:45  OBSID 1088, 3 fid lights, 5 guide stars.
00:22  Load SCS slot 254 and enable, to enlarge the fid search box.
00:54	OBSID 1093  SIM offset -2 arcmin. NO fid lights, 3 stars.  
01:17  Change OBSID to 1270.  Translate SIM to ACIS-I
01:27  Acquire 3 fid lights on ACIS-I, and 5 stars !! PKS0312-770
	focus plate series, first position 0.5mm in front of default
	focus at -504 motor steps.
03:15  OBSID 467.  

NOTES/ISSUES/PROBLEMS
Our SOT 3-shift operation started with an M-shift, so on any given
date the number go L(n) to M(n+1). This is confusing, and we doubled
up on the M26,M27 transition. This has been corrected. 

ATTENTION SOT LEAD:  When you get the *.dot file from the FOT mission
planners, please send email announcing this fact to sot_lead, mp, 
buehler@space.mit.edu, pgf@space.mit.edu, and ascds_dutysci.  This 
is to allow them the most time to access and review.

For the OBSID 1087, we get 4 stars, 3 fids, missing star 1201542416
  which is catalogued at 9.419.
For 1089 we get 3 stars and 3 fids, missing star 1201542416 again and
  also star 1201017424 catalogued at  9.532 mag.   This has a color =1.1
For OBSID 1093 we fail to acquire 1229334016, which we consistently have
  not acquired, and also fail 1204427920 at cataloged mag 9.305 with
  B-V=0.57.

In OBSID 1093, we failed all 3 fid lights. Think that SIM motion
  hadn't ended when the fid search command was sent.  Try to reacquire
  with a real time NMM and NPM sequence. But this doesn't work! Still
  no fid lights.  ACIS confirms SIM motion is -2 arcmin, as planned, 
  by observation of the PKS 0637 image.  Rob discovers that the
  Offline system has a sign error, and commanded a fid light search
  in the wrong direction!!  So ALL measurements with the SIM aimpoint
  offset from nominal will fail fid light acquisition.

The Flight team 9am meetings will resume tomorrow, Tuesday.

Roger will continue the 3pm Monday, Wed, Friday status meetings. 
  A permanent meet-me number will be arranged.
  The Friday meeting will include a Flight Director CCB 
	at the conclusion of other business.

As stated in the previous report, "the fid-light positions in the P7 load are
not correct.  SCS slot 254 was loaded with a CAP to enlarge the fid light
box to 140 arcsec half width. We should keep this enlarged fid light
box through the initial acquisition of HRC-I and HRC-S fid lights
as well.

The SOC is now the keeper of the graphical timeline, and of the Flight
Notes Log.  SOT Lead should obtain a copy of these on disk as they 
are updated, place them in /pool7/chandra/ , and email a notice
of the file names to cal, mp, sot, and ascds_dutysci.

PROBLEM:  in OBSID 1270, we don't immediately seem to observe 
  PKS0312-770 in ACIS-I. We are starting 5, 5000sec observations
  to measure ACIS-I focus, and will likely not be able to
  measure the focus.
This problem has been diagnosed as the fact that the alignment matrix
  in the characteristics file was updated only for ACIS-S. Thus we 
  were both off the HRMA optical axis, (bad for the focus plates 
  anyway), and also off the 1/8 subarray of ACIS I3.  We plan to 
  fix this in the ODB, and replan P7 starting at the 5 focus
  plate measurements.  
 
-------------------------------------------------------
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 
-------------------------------------------------------