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HUBBLE SPACE TELESCOPE

DAILY REPORT #1939

PERIOD COVERED: 0000Z (UTC) 08/11/97 - 0000Z (UTC) 08/012/97

Daily Status Report as of 224/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed Seven Sets of WF/PC-2 7620 (WF/PC-2 CYCLE 7 Standard Darks)

The WF/PC-2 was used to make a series of Cycle 7 standard dark
calibration images. This dark calibration program obtains 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. The observations were executed as scheduled, and no anomalies were
noted.

1.2 Completed WF/PC-2 7626 (UV Throughput)

The WF/PC-2 was used to make observations of PPL-15 as part of as
ultraviolet throughput monitoring program. The observations were completed
as planned, and no problems were reported.

1.3 Completed STIS/CCD 7659 (Daily Darks to Update Acquisition Bad Pixel
Table)

The Space Telescope Imaging Spectrograph (CCD) was used to make dark
calibration images in order to update the acquisition bad pixel table.
Daily hot pixel lists can also be used for science data analysis. The
observations were executed as scheduled, and no anomalies were noted.

1.4 Completed Two Sets of WF/PC-2 7621 (WF/PC-2 Cycle 7 Supplemental
Darks PT1/3)

The WF/PC-2 was used to make supplemental dark calibration images.
This set of dark calibrations is intended to obtain three dark frames every
day to provide data for monitoring and characterizing the evolution of hot
pixels. The observations were executed as scheduled, and no anomalies were
noted.

1.5 Completed NIC/1/2/3 7775 (NICMOS Earth Flats)

The Near Infrared Spectrograph Multi-Object Camera (NICMOS) was used
to make Earth flat calibration observations. This proposal obtains a
series of Earth flats for a subset of narrow-, medium-and broad-band NIC 1,
2 and 3 filters. These flats will be used to generate the master flats for
narrow-band filters and to determine the OTA illumination pattern as a
function of wavelength and camera. The observations were completed as
scheduled, and no problems were noted.

1.6 Completed NIC/1/2/3/STIS/CCD 7267 (Infrared Imaging and Polarimetry
Observations of the Obscured Nucleus of Centaurus A)

The Near Infrared Camera (Cameras 1, 2 and 3) and the Space
Telescope Imaging Spectrograph (CCD) was used to make infrared and
polarimetry observations of the inner nuclear region of Centaurus A. This
project complements and extends the studies we performed with HST in the
optical bands and in the infrared with ground based data. The observations
were completed as scheduled, and no anomalies were reported.

1.7 Completed NIC/2 7331 (Near-IR Properties of the Bulges of Spiral
Galaxies)

The Near Infrared Camera (Camera Two) was used to make infrared
observations of the bulge in spiral galaxy ESO572G22. Near-IR data at HST
resolution are essential for correcting for the effect of dust and will
enable us to derive robust nuclear properties for the sample. The
observations were executed as scheduled, and no anomalies were noted.

1.8 Completed STIS/CCD 7635 (STIS CCD Hot Pixel Annealing)

The Space Telescope Imaging Spectrograph (CCD) was used to test the
hot pixel annealing procedure. 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.
The observations were completed as planned, and no problems were reported.

1.9 Completed NIC 2 7498 (NICMOS Imaging Survey of Distant Radio
Galaxies. Ellipticals at Z > 2 ?)

The Near Infrared Camera (Camera 2) was used to make high resolution
and high signal-to-noise ratio imaging survey observations of the radio
galaxy MRC0406-24. The existence and photometric properties of massive
elliptical galaxies at high redshift provide a powerful probe of galaxy
evolution. The observations were executed as scheduled, and no anomalies
were noted.

1.10 Completed Three Sets of WF/PC-2 6802 (Cosmology With the Medium
Deep Survey)

The WF/PC-2 was used to make observations taken in parallel with the
prime science observations as part of the Medium Deep Sky Survey. The
observations were executed as scheduled, and no problems were reported.

1.11 Completed WF/PC-2 6802 (Cosmology With the Medium Deep Survey)

The WF/PC-2 was used to make observations taken in parallel with the
prime science observations as part of the Medium Deep Sky Survey. The
observations were executed as scheduled, and no problems were reported.

1.12 Completed S/C 5582 (FOC/48 Monthly Activation (Camera Section
Only): Cycle 4)

This proposal was executed as scheduled, and no anomalies were noted.

1.13 Completed WF/PC-2 6587 (Black Holes and Cores of Early-Type Galaxies)

The WF/PC-2 was used to make observations of early-type galaxy
NGC-1016 in order to study its nuclear core region and its possible black
hole. The campaign to find black holes in the centers of galaxies using
HST has so far been highly successful. The observations were completed as
planned, and no problems were reported.

1.14 Completed NIC/1/2/3 7447 (The Cosmological Evolution of Quasar Host
Galaxies)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of galaxy PKS0440-00 as part of a survey to study the
cosmological evolution of galaxies which host quasars. Other point spread
function observations were taken to test the calibration of the cameras.
The observations were executed as scheduled, and no anomalies were noted.

1.15 Completed FGS 7682 (FGS #3 Blue Transfer Function Reference Search
Calibration)

The Fine Guidance Sensor #3 was used to make observations of
candidate star HD38666 in order to perform the blue Transfer Function
reference search calibration. This proposal will measure the transfer
function of a number of blue candidate stars in order to verify a single
star which can be used for the blue calibration of the Trans Mode. The
observations were exected as scheduled, and no anomalies were reported.

1.16 Completed NIC/1/2/3 7726 (NICMOS One Orbit Parallel)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make a one orbit parallel calibration observations. The observations were
executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 10
Successful : 10

Scheduled Reacquisitions : 6
Successful : 6

2.2 FHST Updates:

Scheduled : 17
Successful : 17

2.3 Operations Notes:

No operations anomalies were noted. Nominal Operations.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.

/DMH