Aug_21_1999_M31.txt Shift M31
        Start at 1999:233:18:00 GMT = 1999 Aug 21 2:00pm EDT
        End                           1999 Aug 21 10:00pm EDT

See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Aug_21_1999_M31.txt.
   
SOT Lead	Ed Kellogg
SOT SC/ACA	Tom Aldcroft
FOT-SI		
HRC-SI		
ACIS-SI		Paul Plucinsky

(Times will be given in GMT on day 233. not precise.)

EVENTS							PLAN	DONE	OBSID
--------------						----	----	-----
Perigee								1840
LOS Canberra						1850	1850
AOS Goldstone						2220	2225	216
Start p5p6 load						2220	2220
Change OBSID						2247	2250	1269
Start ACIS science run					2308	2308	1269
ACA tracking 3 fidlites, 4 stars				2312
Finish ACIS run				day 234		0236

NOTES/ISSUES/PROBLEMS 
--------------------- 

At start of shift, we were LOS and in radiation. 

The ACA lost two acquisition stars. In one case it re-located the
correct guide star, and in the other no guide star was found. Tom is
analyzing this situation and will send around an explanation.

OBSID change now happens 3 min after it's listed in the DOT.

Having trouble locking on TLM from Goldstone at 2255. Settles down later.

At 0030, ACIS informs that there is a viable  source image.

Things are very quiet and smooth.