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HUBBLE SPACE TELESCOPE

DAILY REPORT #2640

PERIOD COVERED: 0000Z (UTC) 06/07/00 - 0000Z (UTC) 06/08/00

Daily Status Report as of 160/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 Completed STIS/CCD 8640 (A Public STIS Survey of the Host Galaxies
of Gamma-Ray Bursts)

The Space Telescope Imaging Spectrograph (CCD) was used to obtain
high-resolution images of the fields containing gamma-ray burst with
well-localized coordinates; i.e. the burst has been localized to within
approximately one arcsecond. The goal of this survey is to obtain a
uniform sample of images of the host galaxies of these bursts. There were
no reported problems.

1.2 Completed Two Sets of 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.

1.3 Completed WF/PC-2 8460 (Cycle 8 Supplemental Darks pt2/3)

The WF/PC-2 was used to obtain three dark frames every day to
provide data for monitoring and characterizing the evolution of hot
pixels. The observations completed with no reported problems.

1.4 Completed WF/PC-2 8544 (POMS Test Proposal: WFII Backup Parallel
Archive Proposal II)

The WF/PC-2 was used to execute a POMS test proposal that was
designed to simulate scientific plans. No problems were encountered.

1.5 Completed STIS/CCD/MA1/MA2 8265 (Reverberation Mapping of a
Narrow-Line Seyfert 1 Galaxy)

The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was
used to monitor the UV spectral variability of the narrow-line Seyfert 1
{NLS1} galaxy AKN 564 at 46 epochs in order to measure the size of the
broad emission-line region via reverberation-mapping techniques. This
measurement, and the virial mass estimate that follows from it, will
provide a key test of NLS1 models and help determine the physical mechanism
that underlies the principal component of AGN spectra, the Boroson--Green
primary eigenvector. These observations will be undertaken in parallel
with X-ray and ground-based optical observations that will allow us for the
first time to explore the multiwavelength variability characteristics of
this important subclass of active galactic nuclei. The observations
completed with no reported problems.

1.6 Completed 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.

1.7 Completed STIS/CCD/MA1/MA2 8422 (Imaging Sensitivity and PSF
Library C8)

The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was
used to make Point Spread Function (PSF) observations using standard star
GRW+70D582. This program has several goals: {1} to improve the calibration
of the on-axis imaging sensitivity of STIS; {2} to obtain high S/N
observations stars {both saturated and unsaturated} for a PSF library, and
{3} to obtain narrow-band observations of a star field to improve on the
STIS PSF model. The observations were completed as scheduled, and no
anomalies were reported.

1.8 Completed Two Sets of 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.

1.9 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.

1.10 Completed STIS/CCD 8261 (Nuclear Structure & Merger-Starburst
Relation in the Ultraluminous IR Galaxy NGC 6240: II. Kinematics)

The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the nuclear structure and merger starburst relation in the
ultraluminous infrared galaxy NGC-6240-BH. This galaxy has tidal tails
and a double nucleus. The observations were completed as planned, and no
anomalies were reported.

1.11 Completed STIS/CCD 8411 (STIS CCD Spectroscopic Flats C-8)

The Space Telescope Imaging Spectrograph (CCD) was used to obtain
CCD flats in the spectroscopic mode. The observations were completed as
scheduled, and no anomalies were reported.

1.12 Completed STIS/CCD 8412 (STIS CCD Imaging Flats C8)

The Space Telescope Imaging Spectrograph (CCD) was used to
investigate the flat-field stability of the unit over a monthly period. A
bias calibration observation was also taken. The observations were
executed as scheduled, and no anomalies were noted.

1.13 Completed STIS/CCD 8796 (POMS Test Proposal: STIS Non-Scripted
Parallel Proposal Continuation IV)

The Space Telescope Imaging Spectrograph (CCD) was used in the
parallel mode to make some low galactic latitude archive observations. The
observations were executed as scheduled, and no anomalies were noted.

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: 22
Successful: 22

2.3 Operations Notes:

Using ROP SR-1A, the SSR EDAC error counter was cleared twice.

SI C&DH errors were cleared at 160/0447Z per ROP NS-5.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.

/CAW