Shift report A13 August 4 1999, 8:00am EDT, GMT 216:12:00

Motto:  "Like A Thief in the Night"

We owe our thanks to Jay Onken and Bob Burke for being so accomodating
of ACIS observations.

Spacecraft Activities this shift
- dry run of the IPS #4 burn
- send up loads for IPS #4 burn


ACIS Activities this Shift
1. New Internal Cal Source and Background Measurement

 The spacecraft folks finished early, hours early.  So, they asked
"Don't you ACIS guys have something you would like to run ?"

We ran science runs 3 and 4 (the ones with the new PBs).  We got 2hr45m
on each science run.  SO, SOMEBODY PLEASE ANALYZE THESE DATA !

- 1st run, the third in the new procedure:: ACIS-I, accept events from
S2,S3,I0,I3, reject only b255, event amplitude ~ 15 keV

Altitude: ~129,000 km
FP temp = -118.7 C
OBSID: 62731

Start GMT 216:06:45
Stop  GMT 216:09:31

  count rate varies between 140-200 c/s, but it seems the average is
more like 160 c/s, so we are on the edge of saturating TLM

Kenny, the eminent ACIS data analyst emeritus, reports:

Total Frames = 2567
		S3		I0		I3		S2
# of cts	598,483		217,830		219,984		321,935
c/s		70.7		25.7		26.0		38.0


- 2nd run, the fourth in the new procedure:: ACIS-S, accept events from
S2,S3,S0,S1, reject only b255, event amplitude ~15 keV

Altitude: 135,000 km
FP temp = -118.7 C
OBSID: 62730

Start GMT 216:09:35
Stop  GMT 216:12:15

Total Frames = 2511
		S3		S1		S0		S2
# of cts	587,819		132,876		218,532		316,200
c/s		70.9		16.0		26.4		38.2


Staff:

ACIS: Paul Plucinsky, Shanil Virani and special guest operator 
Kenny Glotfelty  !!!
SOT LEAD: Dan Schwartz
ACA: Bill Podgorski
EPHIN: Eric Martin