ACIS end of A20, beginning of B20 Shift, August 11 1999

ACIS Activities this shift:

1. Partial bakeout set FP to -50 C
2. Set FP to -90 C
3. Disable the FP bakeout heater


Spacecraft Activiites
- Earth sensor scan, last planned before the HRMA Sunshade door opens !
- OPEN Aft Contamination Cover (ACC) !!!!!
- HRC HV ramp up
- ACA Dark Current Calibration


Detailed Notes:

1. Partial bakeout, set FP to -50 C, pressure is 7.0e-6 Torr

223:10:00  FP = -89.8 C, altitude = 56,655 km
223:10:22  start heating FP to -50 C
223:10:49  FP reaches -50.1 C
	
	FP	1CR[AB]T	1WR[AB]T	1CB[AB]T
11:29   -49.6	-89.3		-82.0		-62.4/-59.9
12:15   -49.4	-89.3/-86.9	-82.0		-62.4/-59.9
14:24	-49.6	-86.9		-82.0		-62.4/-59.9


2. ACC open, set fp bake to -90 C

	FP	1CR[AB]T	1WR[AB]T	1CB[AB]T
15:42   -60.2	-89.3		-82.0		-62.4/-59.9
16:01   -70.8	-94.2		-82.0		-62.4/-59.9
16:30   -82.1	-99.0		-82.0		-62.4/-59.9
17:00   -90.0	-103.9		-82.0		-62.4/-59.9


3. Disable the FP bakeout heater

GMT 223:18:45 Focal plane heater disabled
currently at -91.0 C



Staff:

ACIS: Paul Plucinsky, Peter Ford, Bev LaMarr, George Chartas, Scott
Koch, Mark Bautz
SOT Lead; Mike Juda, Ed Kellogg
ACA: Rob Cameron, Tom Aldcroft