Shift M21
        Start at 1999:223:18:00:00 GMT
                = 1999 Aug 11 2:00pm EDT
        End                 10:00pm EDT

(Times will be given in GMT on day 223/224. In general
times are rough, not precise.)

SOT Lead/FP Sci MJ
Spac/Aspect     MF
FOT/Sci liaison AN
HRC             JHC, SSM
ACIS            PPP, YB, PGF

Plan
----
Disable ACIS focal plane heater
Start ACIS FCM measurement (SAP 61044)
Pitch to 120
HRC-I MCP HV turn on and ramp up (CAP 235)
Start ACA dark current calibration runs (SAP 6A018)


Events
------
18:30 AOS Madrid
18:35 disable ACIS focal plane bake-out heater
18:50 start pitch to 120
18:52 OBSID 62948
18:58 HRC-I MCP HV On
19:00 Start HRC-I MCP HV ramp-up
19:16    HV step # 8 in script 2_HV_UP_SLOW
19:21    HV step # 9 in script 2_HV_UP_SLOW
19:29    HV step # 10 in script 2_HV_UP_SLOW
19:34 HRC antico shield PMT HV off
19:39 HRC-I MCP HV off
19:55 enable ACIS focal plane bake-out heater
20:10 OBSID 62743
20:25 start ACIS science run for FCM measurement
23:15 load and activate SCS 129 - radiation zone entry
23:20 uplink ephemeris
23:25 start SAP 6A018 - ACA Dark Current Calibration
23:50 start of first ACA cal down-link

00:01 end of first ACA cal down-link
00:14 start of ACA cal down-link #2
00:24 end of ACA cal down-link #2
00:29 start of ACA cal down-link #3
00:38 end of ACA cal down-link #3
00:42 start of ACA cal down-link #4
00:51 end of ACA cal down-link #4
01:00 start cooling ACA focal plane to -10C
01:50 ACA focal plane at -10C


Notes/Issues/Problems
---------------------
ACIS tried turning off the focal plane bake-out heater, hoping to
maintain -90C. The ACIS focal plane temp did not stay at -90C so the
heater was re-enabled.

First ACIS FCM measurement is progressing.

We had considerable trouble establishing a solid lock on switch-over
to Goldstone (223:22:20). A solid down-link at 512kbps is needed for
the ACA dark current cal data. Signal to noise improved as the ACA cal
data runs progressed.