HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2288

PERIOD COVERED:  0000Z (UTC) 01/15/99 - 0000Z (UTC) 01/18/99

Daily Status Report as of 018/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Five Sets of WF/PC-2 7713 (WF/P-2 Cycle 7 Supplemental
Darks pt3/3)

       The WF/PC-2 was used to make supplemental dark calibration images.
This dark calibration program obtains three dark frames every day to
provide data for monitoring and characterizing the evolution of hot pixels.
The observations were completed as planned, and no anomalies were noted.

   1.2 Completed Five Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor --
Cont. to Dec. 98)

       The Space Telescope Imaging Spectrograph (CCD) was used 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.  The data will be used to 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.

   1.3 Completed WF/PC-2 6798 (The Early Evolution of Local Group Dwarf
Irregular Galaxies)

       The WF/PC-2 was used to determine whether gas-containing dwarf
irregular galaxies in the Local Group have significant populations of very
ancient stars of age comparable to Population II stars in the Galaxy, and
if so, whether the properties of these old populations vary with parent
galaxy type.  The proposal completed with no reported problems.

   1.4 Completed Two Sets of 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.

   1.5 Completed WF/PC-2 6354 (Measuring Luminosity Evolution in Z = 0.3
Field Galaxies)

       The WF/PC-2 was used to make snapshot observations of the galactic
cluster Gal-Cluster-0 located at a distance of Z = 0.3.  The targets were
drawn from a much larger pool of galaxies for which the internal kinematics
have been measured from an extensive ground based program.  The
observations were executed as scheduled, and no anomalies were noted.

   1.6 Completed Two Sets of STIS/CCD 7357 (Testing the Nature of "Type 2"
Liners)

       The Space Telescope Imaging Spectrograph (CCD) was used to observe
"Type 2" LINERs.  LINERs, like Seyferts, come in two varieties: "type 1"
have broad permitted lines and "type 2" only have narrow lines.  While
LINER 1s undoubtedly are genuine AGNs, the true nature of LINER 2s remains
unknown, although they make up most of the LINER population.  As described
in 2.1 and HSTAR 6913, the acquisition for the first iteration of this
proposal failed, and the take data flag remained down, affecting two
observations.  Otherwise, the proposal completed with no other reported
problems.

   1.7 Completed STIS/CCD/MA1/MA2 7402 (Chromospheric Activity in Old
Stars: Halo Subdwarfs' Variability)

       The Space Telescope Imaging Spectrograph (CCD and MA2) was used to
make observations of the old sub-dwarf star HD84937 in order to study its
chromospheric activity.  All normal stars cool enough to have convection
zones share a common minimum level of chromospheric activity which
decreases with advancing spectral type; most show higher emission levels
which vary with time.  A wavelength calibration observation was also taken.
The observations were executed as scheduled, and no anomalies were noted.

   1.8 Completed Two Sets of WF/PC-2/FOC/96 6576 (HST Imaging of the Two
Most Distant Radio Galaxies)

       The WF/PC-2 and the Faint Object Camera (f/96) were used to make
observations of distant radio galaxy Gal-1436+6.  High-resolution imaging
is required of this object with the HST in Lyman-Alpha and continuum.  The
observations were completed as planned, and no problems were reported.

   1.9 Completed Two Sets of STIS/CCD 8081 (STIS CCD Hot Pixel Annealing
[2- II)

       The Space Telescope Imaging Spectrograph (CCD) was used to make a
dark and a bias calibration observation.  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 executed as scheduled, and no anomalies
were noted.

   1.10 Completed Nine Sets of STIS/CCD 8091 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude, non-scripted, parallel observations.  The observations
were completed as planned, and no anomalies were noted.

   1.11 Completed Two Sets of WF/PC-2 6357 (The Nuclear Morphology of
Elliptical Galaxies)

      The WF/PC-2 was used to make images of the early type, large,
elliptical galaxies NGC-4291 and NGC-2950(taken from a list of 150
galaxies) in order to study its nuclear morphology.  This survey will
complement Illingworth's snapshot study of later Hubble types.  The
observations were completed as scheduled, and no anomalies were reported.

   1.12 Completed WF/PC-2 7622 (WF/PC-2 Cycle 7 Internal Monitor)

       The WF/PC-2 was used to make a set of Cycle 7 internal monitoring
calibration measurements.  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.  A bias calibration and an internal flat calibration image were
also taken.  The observations were executed as scheduled, and no anomalies
were noted.

   1.13 Completed STIS/CCD/MA1/MA2 7673 (STIS MAMA Sensitivity and Focus
Monitor)

       The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to
make observations of standard star AGK+81D266 in order to perform a MAMA
sensitivity and focus monitoring program.  This is to monitor sensitivity
of each MAMA grating mode to detect any change due to contamination or
other causes.  The observations were executed as scheduled, and no
anomalies were noted.

   1.14 Completed WF/PC-2 6564 (Detailed Morphology of a Lyman-Alpha Galaxy
at Z=2.3)

       The Wide Field Planetary Camera-2 was used to make observations of
the Lyman-Alpha emitting galaxy PHL957, which is at a distance of Z = 2.3,
in order to study its detailed morphology.  The identification and detailed
study of galaxies at high redshift remains the most direct path to
understanding galaxy formation and evolution.  The observations were
executed as scheduled, and no anomalies were noted.

   1.15 Completed Three Sets of STIS/CCD 8084 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
non-scripted parallel high galactic latitude observations as part of POMS
test proposal.  The observations were executed as scheduled, and no
anomalies were noted.

   1.16 Completed WF/PC-2 6556 (Rest-Frame Ultraviolet Imaging of Normal
Galaxies at High Redshifts)

       The WF/PC-2 was used to make observation of Field-0302 in order to
study the rest-frame of ultraviolet imaging of normal galaxies at high
redshifts.  This is to study the evolution of normal galaxies over the last
two-thirds of the age of the Universe through HST imaging of fields from
our deep redshift surveys.  The observations were executed as scheduled,
and no anomalies were noted.

   1.17 Completed WF/PC-2 7376 (Understanding Halo Microlensing and
Variable Stars in M31: 1} Snapshot Survey of Candidates)

       The WF/PC-2 was used to make observations of the galaxy M-31-Lens4
system to help understand its halo microlensing and Variable Stars.  Six
microlensing candidates affecting stars in M31 and presumably due to
sub-solar-mass MACHOs are being studied.  Simultaneously we can explore the
stellar population in the relatively unexplored disk/bulge transition via
its variable stars, luminosity function and color-magnitude diagram.  The
observations were executed as scheduled, and no anomalies were reported.

   1.18 Completed WF/PC-2 6825 (Quantitative Measures of the Evolution of
the Cluster Galaxy Population)

       The WF/PC-2 was used to make observations of galaxy MS1358+62J.  The
goal of this proposal is to understand the differential evolution of
cluster and field galaxies over the redshift range 0.3 < Z < 0.6.  A wave
length calibration image was also taken.  The observations were executed as
scheduled, and no anomalies were noted.

   1.19 Completed WF/PC-2 6730 (Haloes of Nearby Edge-On Spirals)

       The WF/PC-2 was used to take deep WFPC2 exposures in F814W of a halo
field in the nearby edge-on spiral NGC 5907.  We have deep CCD surface
photometry of the galaxy, and propose to use deep WFPC2 images to check
that the extended halos seen in the surface photometry originate from halo
starlight and not from various phases of the ISM.  The observations
commpleted as planned with no reported problems.

   1.20 Completed FOC/96 6350 (FOC spectroscopy of BALQSOs)

       The Faint Object Camera (f/96) was used to make ultraviolet
spectrographic images of BALQSO 1423+5001 which is known to show broad
emission lines from abundant ions.  This will help us improve our knowledge
of these BAL class objects.  The observations were executed as scheduled,
and no anomalies were noted.

   1.21 Completed STIS/CCD 7674 (IR Standards)

       The Space Telescope Imaging Spectrograph (CCD) was used to establish
a set of absolute flux standards on the WD scale that extend the existing
wavelength coverage to 10300A with the STIS G750L grating setting.  The
proposal completed with no reported problems.

   1.22 Completed WF/PC-2 8059 (POMS Test Proposal: WF-2 Targeted Parallel
Archive Proposal)

       The WF/PC-2 was used to make observations in parallel with the prime
science observations.  The parallel opportunities available with WF/PC-2 in
the neighborhood of bright galaxies are treated in a slightly different way
from the normal pure parallels.  Local group galaxies offer the opportunity
for a closer look at young stellar populations.  The observations were
completed as planned, and no anomalies were reported.

   1.23 Completed Two Sets of WF/PC-2 8061 (POMS Test Proposal: WF-II
Backup Parallel Archive Proposal)

       This is a POMS test proposal designed to simulate scientific plans.
The proposal was executed as planned, and no anomalies were reported.

   1.24 Completed Two Sets of WF/PC-2 6967 (Blue Continuum Snapshots of 3CR
Radio - Continued Galaxies)

       The WF/PC-2 was used to make observations of the radio galaxies
3C454.0 and 3C300.1.  Radio galaxies are an important class of
extragalactic objects: they represent one of the most energetic
astrophysical phenomena and they may be used as probes of their
environments.  They are unique probes of the early Universe.  The
observations were completed as planned, and no problems were reported.

   1.25 Completed WF/PC-2 6698 (High Resolution Imaging of Bubble and
Superbubbles in H II Regions)

       The WF/PC-2 was used to make high resolution observations of the H
II region N44.  Massive stars dynamically interact with their ambient
interstellar medium via fast stellar winds during their lifetime and via
supernova blasts at their demise.  The dynamical interaction causes the
physical structure of an H II region to evolve along with its ionizing
massive stars.  The observations were executed as scheduled, and no
anomalies were noted.

   1.26 Completed WF/PC-2 7387 (T-Tauri Star Snapshot Survey)

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

   1.27 Completed FGS 7598 (Long Term Stability of Transfer Scan Mode in FGS-3)

       The Fine Guidance Sensor (FGS-3) was used to make observations of
standard star UPGREN69 in order to study the long term stability of the
Transfer Scan Mode order to study the long term stability of the Transfer
Scan Mode.  The observations were completed as planned, and no problems
were reported.

   1.28 Completed WF/PC-2 8090 (POMS Test Proposal: WF-II parallel archive
proposal continuation)

       The WF/PC-2 was used in the parallel mode to make some low galactic
latitude archive observations.  The program will be used to take parallel
images of random areas of the sky.  The observations were executed as
scheduled, and no anomalies were noted.

   1.29 Completed STIS/MA1 7298 (A Snapshot Survey for UV bright Quasars at
redshift below 3)

       The Space Telescope Imaging Spectrograph (MA1) was used to make
ultraviolet snapshot observations  of the bright quasar HS1626-643 which
has a redshift (Z) below 3.0.  The goal is to find quasars bright enough in
the ultraviolet for spectroscopic follow-up in the range of 900-1200
Angstroms.  A wave length calibration image was also taken.  The
observation were completed as scheduled, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 33
                                        Successful : 32

       As described in HSTAR 6913, the acquisition scheduled for
015/132720Z failed when primary FGS-1 exceeded the search radius limit.
The proposal described in 1.6 was affected.

                          Scheduled Reacquisitions : 13
                                        Successful : 13

   2.2 FHST Updates:

                              Scheduled : 64
                             Successful : 64

   2.3 Operations Notes:

        Using ROP SR-1, the SSR EDAC error counter was cleared seven times.

       The MA transmitters were turned on and off on one occasion (using
ROP IC-1); the SSA transmitters, on two occasions (using ROP IC-2).

       Using CCS and ROP NS-12, the STIS flight software error counter was
reset at 015/1443Z.

       FHST performance data was collected at 015/1645Z.

       A TTR was written to document the loss of 9-minutes, 14-seconds of
unrecoverable 32 kbps engineering data due to the inability to acquire lock
in Mode 1 at 016/0141Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH