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15 Apr 2003

HUBBLE SPACE TELESCOPE

DAILY REPORT #3341

PERIOD COVERED:  DOY 104

Part 2 of 2

WFPC2 9596

WFPC2 CYCLE 11 INTERNAL MONITOR

This calibration proposal is the Cycle 11 routine internal monitor
for WFPC2, to be run weekly to monitor the health of the cameras. A
variety of internal exposures are obtained in order to provide a
monitor of the integrity of the CCD camera electronics in both bays
{gain 7 and gain 15}, a test for quantum efficiency in the CCDs, and
a monitor for possible buildup of contaminants on the CCD windows.

STIS 9606

CCD Dark Monitor-Part 2

Monitor the darks for the STIS CCD.

STIS 9608

CCD Bias Monitor - Part 2

Monitor the bias in the 1x1, 1x2, 2x1, and 2x2 bin settings at
gain=1, and 1x1 at gain = 4, to build up high-S/N superbiases and
track the evolution of hot columns. 

STIS/CAL 9609

CCD Read Noise Monitor

This proposal measures the read noise of all the amplifiers {A, B, C,
D} on the STIS CCD using pairs of bias frames. Full frame and binned
observations are made in both Gain 1 and Gain 4, with binning factors
of 1x1, 1x2, 2x1 and 2x2. All exposures are internals. Pairs of
visits are scheduled for monthly execution.

STIS 9612

STIS CCD Hot Pixel Annealing Cycle 11

The effectiveness of the CCD hot pixel annealing process is assessed
by measuring the dark current behavior before and after annealing and
by searching for any window contamination effects. In addition CTE
performance is examined by looking for traps in a low signal level
flat. Follows on from proposal 8906.

STIS 9613

STIS CCD Spectroscopic Flats C11

Obtain CCD flats on the STIS CCD in spectroscopic mode.

STIS 9614

STIS CCD Imaging Flats C11

Investigate flat-field stability over a monthly period.

ACS 9649

ACS internal CTE monitor

The charge transfer efficiency {CTE} of the ACS CCD detectors will
decline as damage due to on-orbit radiation exposure accumulates.
This degradation will be closely monitored at regular intervals,
because it is likely to determine the useful lifetime of the CCDs.
All the data for this program is acquired using internal targets
{lamps} only, so all of the exposures should be taken during Earth
occultation time {but not during SAA passages}. This program
emulates the ACS pre-flight ground calibration and post-launch SMOV
testing {program 8948}, so that results from each epoch can be
directly compared. Extended Pixel Edge Response {EPER} and First
Pixel Response {FPR} data will be obtained over a range of signal
levels for both the Wide Field Channel {WFC}, and the High Resolution
Channel {HRC}.

ACS 9673

CCD Daily Monitor

For any source of noise in ACS CCD detectors. This programme will be
executed once a day for the entire lifetime of ACS


FLIGHT OPERATIONS SUMMARY:

Significant Spacecraft Anomalies:
(The following are preliminary reports of potential non-nominal
performance that will be investigated.)

HSTARs:
8989  Utility Request Manager Process Down {at} 104/21:00:00z
8990
STIS Thermal Control Zone temperatures out of limit {at} 105/04:22:00z

COMPLETED OPS REQs:
16926-0  ZGSP Safemode Recovery {at} 104/1102z
16932-0  Real Time MAP {at} 104/0958z
16933-0  HLGBU Uplink {at} 104/1013z
16934-0  ARU/PRT {at} 104/1018z
16935-0  HLGBU Uplink {at} 104/1559z
16936-0  ARU/PRT {at} 104/1703z
16937-0  Safe COSTAR, Uplink N04, Set ATP Pointer {at} 104/2200z
16938-0  R/T Map {at} 105/0444z

OPS NOTES EXECUTED:
1097-0  Gyro 3 Motor Current Limit Change {at} 104/1139z

                          SCHEDULED     SUCCESSFUL    FAILURE TIMES
FGS GSacq                     1             1
FGS REacq                     0             0
FHST Update                   5             5
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