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HUBBLE SPACE TELESCOPE

DAILY REPORT #2666

PERIOD COVERED: 0000Z (UTC) 07/17/00 - 0000Z (UTC) 07/18/00

Daily Status Report as of 200/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 Completed WF/PC-2 8683 (Imaging Of Brightest Cluster Galaxies: The
High End Of The Black Hole Mass Distribution)

The WF/PC-2 was used to make kinematic black hole detections in
galaxies to decide whether they indicate that the mass correlates with both
optical luminosity and radio power. The observation completed with no
reported problems.

1.2 Completed STIS/CCD 8808 (POMS Test Proposal: STIS Non-Scripted
Parallel Proposal Continuation III)

The Space Telescope Imaging Spectrograph (CCD) was used to make
non-scripted, parallel observations as part of a POMS test proposal. The
observations completed with no anomalous activity.

1.3 Completed Four Sets of WF/PC-2 8826 (Cycle 9 Supplemental Darks pt 1)

The WF/PC-2 was used to perform a T dark calibration program that
obtains three dark frames every day in order to provide data for monitoring
and characterizing the evolution of hot pixels. There were no reported
anomalies.

1.4 Completed Two Sets of STIS/CCD 8439 (Bias Monitor-Part 2 C8)

The Space Telescope Imaging Spectrograph (CCD) was used to 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. The proposal completed with no reported problems.

1.5 Completed Three Sets of WF/PC-2 8800 (Moving Observations of a
Fixed Star Cluster)

The WF/PC-2 was used for a proposal that will slew HST across a
star cluster while making exposures. The resulting trailed images will
then be studied. The proposal completed with no reported problems.

1.6 Completed Two Sets of STIS/CCD 8437 (Dark Monitor-Part 2 C8)

The Space Telescope Imaging Spectrograph (CCD) was used to monitor
the darks. The proposal completed nominally.

1.7 Completed Three Sets of WF/PC-2 8811 (Cycle 9 Standard Darks)

The WF/PC-2 was used to obtain dark frames every week in order to
provide data for the ongoing calibration of the CCD dark current rate, and
to monitor and characterize the evolution of hot pixels. Over an extended
period these data will also provide a monitor of radiation damage to the
CCDs. The proposal completed with no reported problems.

1.8 Completed STIS/MA1/MA2 8426 (Cycle 8 MAMA Dark Measurements)

The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to
make a routine Cycle-8 MAMA dark noise calibration measurement. This
proposal will provide the primary means of checking on the health of the
MAMA detectors. This is done through frequent monitoring of the background
count rate. The observations were completed as planned, and no problems
were reported.

1.9 Completed WF/PC-2 8812 (Cycle 9 Internal Monitor)

The WF/PC-2 was used to obtain routine internal monitors for WFPC2
in order 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. There were no reported problems.

1.10 Completed STIS/CCD/MA2 8434 (Slitless Spectroscopy/MAMA)

The Space Telescope Imaging Spectrograph (CCD and MA2) was used to
calibrate the dispersion solution and the sensitivity as a function of the
target-position in the MAMA first order and prism slitless
spectroscopy. The observations completed with no reported problems.

1.11 Completed WF/PC-2 8805 (POMS Test Proposal: WFII Parallel Archive
Proposal Continuation)

The WF/PC-2 was used to perform a generic target version of the
WFPC2 Archival Pure Parallel program. The program will be used to take
parallel images of random areas of the sky, following the recommendations
of the Parallels Working. The proposal completed with no reported problems.

1.12 Completed WF/PC-2 8676 (Halo Microlens Source Systems and their
Backgrounds and Reddening)

The WF/PC-2 was used to investigate the existence of dark objects
in the Galactic halo suggested by the MACHO project while is about to
release 5.7 years of LMC data revealing ~ 20 candidate microlensing
events. The observer proposes to obtain medium-deep broadband images of
eight of the new candidate source stars. The observations completed with
no reported anomalies.

1.13 Completed STIS/CCD 7912 (STIS Parallel Archive Proposal - Nearby
Galaxies - Imaging and Spectroscopy)

The Space Telescope Imaging Spectrograph (CCD) was used to make
parallel observations of nearby galaxies. This survey will be useful to
study the star formation histories, chemical evolution, and distances to
these galaxies. These data will be placed immediately into the Hubble Data
Archive. The observations were completed as scheduled, and no problems
were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:
Scheduled Acquisitions: 8
Successful: 8

Scheduled Re-acquisitions: 7
Successful: 7

2.2 FHST Updates:
Scheduled: 33
Successful: 33

2.3 Operations Notes:

The SSR error counter was cleared three times per ROP SR-1A.

Using ROP DF-18A, the engineering status buffer was dumped at
199/1240Z.

Real-time operations transferred to CCS string "C" at 199/1350Z in
preparation for the CCS 3.2.0.7 patch which was made on string "B". The
patch was successfully tested.

A TTR was written when there was an unsuccessful attempt to send a
GCMR for Mode 2 at 199/1941Z. The POCC had not been notified of a DIS ADPE
failover, and the GCMR had not been processed. As a result, there was a
two-minute period of unrecoverable 32k engineering data.

As documented in HSTAR 7730, the SSR was commanded for a science
playback at 200/054748Z. During the playback, the EDAC count flagged high
with a value of 60. Twelve seconds later the count increased to 101. The
HST was in an SAA interval at the time. Per ROP SR-1A the Systems engineer
was notified, the error counter was cleared, and the "problem" blocks were
re-transmitted at 200/0729Z. The same errors occurred again. The TRI
module was then reconfigured per ROP SR-1A.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.

/CAW