HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2063

PERIOD COVERED:  0000Z (UTC) 02/18/98 - 0000Z (UTC) 02/19/98

Daily Status Report as of 050/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed STIS/CCD 7926 (CCD Dark and Bias Monitor -- Continued)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
several dark and bias calibration observations.  This is to measure CCD
dark current and bias rates for the two supported amplifier settings {gain
= 1 and gain = 4} in order to gather data for making superdarks and
superbiases.  These observations will also track the growth of hot pixels
on the CCD in general and within the various target acquisition apertures
specifically.  The observations were executed as scheduled, and no
anomalies were noted.

   1.2 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 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.

   1.3 Completed Five Sets of STIS/CCD 7908 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations as part of the POMS Test Proposal.  This was a
STIS non-scripted parallel proposal.  The observations were completed as
planned, and no problems were reported.

   1.4 Completed STIS/CCD 7803 (Daily Darks to Update Acquisition Bad Pixel
Table Part III)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
daily dark calibration updates.  These daily darks are intended to identify
hot pixels for update to the acquisition on-board FSW hot pixel table.
Daily hot pixel lists can also be used for science data analysis.  The
observations were completed as planned, and no anomalies were reported.

   1.5 Completed FOC/96 6426 (A Search for Multiple Images of QSOs Seen
Through Damped Ly-Alpha Absorbers)

       The Faint Object Camera (f/96) was used to make observations of QSO
PG0935+417.  The propose of these observations is to obtain high-resolution
images of a sample of QSOs with strong damped Lyman-Alpha absorption in
their spectra.  The observations should determine whether these QSOs are
multiply imaged by gravitational lensing.  As described in yesterday's
report and in HSTAR 6357, the acquisition for this proposal defaulted to
fine lock on one FGS only, possibly affecting two observations.  Otherwise,
the observations were completed as planned with no further problems.

   1.6 Completed Three Sets of WF/PC-2 7909 (POMS Test Proposal: WF II
Parallel Archive Proposal)

       The WF/PC-2 was used to make parallel observations as part of the
POMS test proposal.  This test proposal is designed to simulate scientific
plans.  The observations were completed as planned, and no problems were
reported.

   1.7 Completed WF/PC-2 6557 (WF/PC-2 Imaging of Intermediate Redshift
Absorption Selected Galaxies)

       The WF/PC-2 was used to make observations of the galaxy Q0150-Fiel
where a halo appears to be absorbing light from the background
quasi-stellar object (QSO).  As described in yesterday's report and in
HSTAR 6357, the acquisition for this proposal defaulted to fine lock on one
FGS only, possibly affecting two observations.  Later, as documented in
HSTAR 6346 and in the previous report, the re-acquisition failed.  Two more
observations may have been affected.  Otherwise, the observations were
completed as planned, and no further problems were reported.

   1.8 Completed Two Sets of WF/PC-2 7387 (T-Tauri Star Snapshot Survey)

       The WF/PC-2 was used to make observations of the stars HD-17637 and
CS-Cha as part of a T-Tauri class star survey.  The observations were
executed as scheduled, and no anomalies were noted.

   1.9 Completed WF/PC-2 7505 (The Hubble Diagram for Distant Supernovae
Measuring Cosmic Deceleration and Global Curvature)

       The WF/PC-2 was used to make observations of Super Nova SN1998B1 in
order to produce a precise Hubble diagram from measuring cosmic
deceleration and global curvature.  HST can make an essential contribution
by providing photometry with substantially higher precision and better
temporal coverage than can be obtained from the ground.  The observations
were completed as planned, and no anomalies were reported.

   1.10 Completed STIS/MA2 7651 (STIS MAMA Dispersion Solution Check)

       The Space Telescope Imaging Spectrograph (MAMA-2) was used to make
MAMA dispersion solution checks.  Wavelength dispersion solutions will be
determined on a yearly basis as part of a long-term monitoring program.
The observations were completed as scheduled, and no anomalies were
reported.

   1.11 Completed WF/PC-2 7384 (Probing the Fine-Scale Structure and Colors
of Interstellar "Cirrus" Clouds)

       The WF/PC-2 was used to make observations of the nebula NEB-044816
in order to probe the fine-scale structure and colors of interstellar
"cirrus" clouds.  The ubiquitous nature of Galactic "cirrus" clouds make
them both: {1} accessible targets for the study of the properties of
interstellar dust grains, and {2} sources of confusion in investigations of
distant objects {e.g. galaxies, clusters of galaxies} at low surface
brightness levels.  The observations were completed as planned, and no
problems were reported.

   1.12 Completed Two sets of 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 PKS0938+18 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.

   1.13 Completed Three Sets of WF/PC-2 7625 (WF/PC-2 Cycle 7 Earth Flats)

       The WF/PC-2 was used to make a series of Earth flat calibration
images.  These flat fields will allow mapping of the OTA illumination
pattern and will be used in conjunction with previous internal and external
flats to generate new pipeline superflats.  The observations were completed
as planned, and no anomalies were reported.

   1.14 Completed NIC/3 7901 (NICMOS Post-Campaign Focus
Monitoring)

The Near Infrared Camera (Camera Three) was used to make some post-campaign
focus monitoring observations by using star cluster NGC-3603.  This
proposal is used to determine and monitor the optimal focus and tilt
settings for all three NICMOS cameras after the first NIC/3 observing
campaign.  The observations were executed as scheduled, and no anomalies
were noted.

   1.15 Completed NIC/2 7418 (Imaging of Younf Stellar Object Circumstellar
Nebulosity)

       WF/PC-2 observations have shown that several young stellar object
V892-Tau in the nearby Taurus molecular cloud is seen only indirectly via
scattered light.  New NICMOS (Camera Two) images will be compared with the
existing WFPC2 images and with model reflection nebulae to constrain the
circumstellar density distributions.  The dark absorption lanes already
seen in these type systems suggest that the NICMOS images will reveal
edge-on disks similar to the HST results for HH 30, and thus allow direct
observation of the disk geometry.  The observations were completed with no
reported anomalies

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 13
                                        Successful : 13

                          Scheduled Reacquisitions : 6
                                        Successful : 6

   2.2 FHST Updates:

                              Scheduled : 24
                             Successful : 24

   2.3 Operations Notes:

       There were no reported problems for this operational day.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH