To:sot_shift
from: Dan Schwartz
date: 25 Aug 99, 10:00pm EDT
Subject: SOT shift report, Shift M35
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Aug_25_1999_M35.txt

Shift Mxx
	Start at 235:18:00  GMT
		 = 02:00pm 25 Aug EDT
	End	   10:00pm 25 Aug
   
SOT Lead	DAS
Spac/Aspect	RAC
FOT/Sci liason	EM
HRC		
ACIS 		PPP,RB,LT

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

PLAN
Continue execution of P7b load, off axis effective area
  measurements in chips I0, I1, I2.
Review products for P8 load.

EVENTS
20:05  AOS on Madrid.  ACIS-I is observing OBSID 161, G21.5-0.9 SNR
       offset on chip I2.  Have 5 stars and 3 fid lights.
21:32  Products available for P8 load review, see /data/mpcrit1/oac/p8/output
	or  /ehs/ofls/build/bin/mps/output/m238:1135 from within the EHS.
23:15  Executing CAP 345, to test use of protected slot SCS 38 for 
	reset of ACA slots by commanding 8 searches at an impossible
	location to clear the slots. This test was successful and therefore
	the plan is for this to replace mission SCS 193 as of P9.
	

NOTES/ISSUES/PROBLEMS
Chat with Fred Smith about ACA behaviour.  
  Only 11 slots available for candidate recognitions in the directed
  searches. IF these were all full, it could cause a block against
  acquiring more stars.  BUT they shouldn't be full, because a slot
  will only keep the brighter of two stars in a given search box,
  i.e.,  after one or two frames it will drop the fainter.
What happens to the 3 slots that are NOT cleared by the SCS 38 reset?

In review of P8, we see that the last Capella observation, ObsId 1237,
receives less than a quarter of its planned time - 3.4 Ks instead of 15Ks.
THIS needs to be fixed tomorrow for the second half of the P8 load. 

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