HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2207

PERIOD COVERED:  0000Z (UTC) 09/11/98 - 0000Z (UTC) 09/14/98

Daily Status Report as of 257/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Nine Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental
Darks pt2/3)

       The WF/PC-2 was used to make a series of Cycle 7 supplemental
calibration darks.  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 executed as scheduled, and no
anomalies were noted.

   1.2 Completed NIC/1/2/3 7266 (High-Resolution IR and Optical Imaging of
the Fields Around a Large Sample of Z > 4.5 Quasars)

       The Near Infrared Camera (Cameras One, Two and Three) was to be used
to make observations of the quasar GB1428+421 in order to make
high-resolution infrared and optical imaging of the fields around the
quasars.  This object appears to be very primitive and may represent early
stages in the galaxy formation process.  As described in HSTAR 6661 and in
the previous report, the guide star acquisition for this proposal failed,
affecting one observation.  Otherwise, the observations were completed as
planned, and no further anomalies were reported.

   1.3 Completed Twenty Sets of STIS/CCD 8062 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude observations take in parallel with the prime science
observations.  As described in HSTAR 6661 and in the previous report, the
guide star acquisition for the first two iterations of this proposal
failed, affecting four observations.  Then, as described in HSTAR 6665 and
2.1 the acquisition for the final two iterations of this proposal defaulted
to fine lock on one FGS only.  Otherwise, the observations were completed
as planned, and no further problems were reported.

   1.4 Completed Ten 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.  As described in HSTAR 6661 and in the previous report, the guide
star acquisition for the first iteration of this proposal failed, affecting
two observations.  Otherwise, the observations were completed as planned,
and no further problems were reported.

   1.5 Completed Five Sets of STIS/CCD 8064 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal - Backup)

       The Space Telescope Imaging Spectrograph (CCD) was used to conduct a
non-scripted parallel POMS test.  The observations were completed as
scheduled, and no problems were reported.

   1.6 Completed Four 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.
As described in HSTAR 6665 and 2.1 the acquisition for the final iteration
of this proposal defaulted to fine lock on one FGS only.  Otherwise, the
proposal was executed as planned, and no further anomalies were reported.

   1.7 Completed WF/PC-2 NIC/1/2/3/STIS/CCD 7559 (STIS GTO Observations)

       The Near Infrared Camera (Cameras One, Two and Three), the Space
Telescope Imaging Spectrograph (CCD) and the WF/PC-2 all were used to make
GTO observations of IRAS15179.  The solar blind and long slit capabilities
of STIS will be used to investigate the population of hot stars in this
galaxy.  Imaging of galaxies with WF/PC-2 has indicated the presence of
knots of blue stars in many galaxies.  The observations were executed as
scheduled, and no anomalies were noted.

   1.8 Completed Six 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.

   1.9 Completed FOC/96 6510 (The Spatially Extended Featureless Continuum
Source of Cygnus A: Multicolor Imaging in Total Flux and Polarization)

       The Faint Object Camera (f/96) was used to make observations of the
spatially extended featureless continuum source of the powerful prototype
classical double radio galaxy Cygnus-A.  Ground based data and several
brief HST images show that the nuclear featureless continuum {FC} source is
fully resolved spatially.  The observations were executed as scheduled, and
no anomalies were noted.

   1.10 Completed Seven Sets of NIC/2/3 7907 (NICMOS Pure Parallel Winter
97-98)

       The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel spectrographic observations of sky regions when another
instrument is prime.  The observations were completed as planned, and no
anomalies were reported.

   1.11 Completed NIC/2/3 8063 (NICMOS Pure Parallel Sponge - Backup)

       The Near Infrared Camera (Cameras Two and Three) was used to make
observations taken in parallel with the prime science observations.  This
proposal is PRE-the new FOM default.  The observations were executed as
scheduled, and no anomalies were noted.

   1.12 Completed NIC/2 7894 (Completing A Near-Infrared Search for Very
Low Mass Companions to Stars within 10 pc)

       The Near Infrared Camera (Camera Two) was used to make observations
searching for very low mass (VLM) companions to the star LHS417.  This
search will be the largest, most sensitive, volume-limited search for VLM
companions ever undertaken.  The observations were completed as planned,
and no anomalies were reported.

   1.13 Completed NIC/2 7887 (A Survey of Gravitational Lenses as
Cosmological Tools II)

       The Near Infrared Camera (Camera Two) was used to make observations
of the gravitational lens candidate system HST01247+0.  The propose is to
extend our IR survey of gravitational lenses and gravitational lens
candidates by obtaining NICMOS images of 14 additional lens systems or
candidates.  The observations were executed as scheduled, and no anomalies
were noted.

   1.14 Completed NIC/2 7863 (The Nature of Gamma-Ray Burster Host Galaxies)

       The Near Infrared Camera (Camera Two) was used to study the nature
of a gamma-ray burster in the host galaxy GRB980329.  Of the two thousand
gamma-ray bursts detected in the last twenty-five years, only two have
identified optical counterparts.  The observations were executed as
scheduled, and no problems were reported.

   1.15 Completed NIC/1 7329 (The Nature of the Damped LyAlpha Absorbers --
A New Study of Young Galaxies)

       The Near Infrared Camera (Cameras One) was used to make observations
of the young galaxy 1557+0313 in order to study the nature of its damped
Lyman-Alpha Absorbers (DLAs).  The DLA line systems, occasionally found in
quasar spectra, provide one of only a few practical methods of detecting
and studying significant numbers of galaxies at high redshifts.  The
observations were executed as scheduled, and no anomalies were noted.

   1.16 Completed NIC/2 7835 (A Search for Superplanets Embedded in Beta
Pic & Vega-like Circumstellar Disks)

       The Near Infrared Camera (Camera Two) was used to make observations
of the circumstellar disk around star HD68456 in order to search for
superplanets.  The discovery of a circumstellar disk orbiting Beta Pictoris
as well as the discovery of other similar IR-excess Vega-like systems have
provided compelling evidence that our solar system, or at least many of the
processes which are thought to have created it, may be far from unique.
The observations were executed as scheduled, and no anomalies were noted.

   1.17 Completed NIC/1/2/3 7840 (Near-IR Imaging and Polarimetry of
Bipolar Proto-Planetary Nebulae)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make near-infrared observations of the bipolar proto-planetary nebula
IRAS12419.  The origin of the rich variety of morphologies observed in
planetary nebulae {PN} is one of the major unsolved problems in stellar
evolution.  The observations were executed as scheduled, and no anomalies
were noted.

   1.18 Completed NIC/2 7895 (HST NICMOS SNAPSHOT Observations of Field
Galaxies at Z < 1)

       The Near Infrared Camera (Camera Two) was used to make observations
of the field galaxy Gal-141729.  The proposed NICMOS observation will
provide their morphology in rest frame NIR wavelengths {8000 - 16000 A},
where the effect of dust extinction is less severe, and their near infrared
{NIR} colors.  The observations were completed as scheduled, and no
anomalies were reported.

   1.19 Completed NIC/1/2/3 7824 (Deep NIC Images of 20 High-Z Damped
Ly-Alpha Galaxies)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the high-Z damped Lyman-Alpha (DLA) galaxies PHL1222
and 0216+0803.  The HST imaging together with ground-based spectroscopy
will unify absorption-line studies and faint galaxy imaging studies,
providing a comprehensive picture of the history of assembly, star
formation, gas consumption, and chemical enrichment in the DLA galaxies.
The observations were completed as planned, and no problems were reported.

   1.20 Completed WF/PC-2 6651 (WLR Distances from Accurate Multi-Color
WF/PC-2 Photometry of A & B Supergiants in M-31 and M-33)

       The WF/PC-2 was used to make multi-color photometric observations of
NGC-224 (a.k.a., M-31).  This is to study A and B supergiant stars in M-31
and M-33 with a precision far exceeding that of existing ground-based
estimates.  The observations were completed as planned, and no problems
were reported.

   1.21 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.

   1.22 Completed NIC/3 7903 (NICMOS GRISM Dispersion Monitoring)

       The Near Infrared Camera (Camera Three) was used to perform GRISM
dispersion monitoring by making observations of source HB12.  This is to
monitor the wavelength dispersion solution for the NICMOS grisms after the
NIC/3 Campaign.  The observations were completed as scheduled, and no
anomalies were reported.

   1.23 Completed NIC/3 7830 (IR Spectra for Known-Mass M Dwarfs)

       The Near Infrared Camera (Camera Three) was used to make infrared
spectrographic observations of M-Class dwarf star GJ65AB.  Over the last
decade there has been considerable debate on two major issues in the
low-mass star literature: {1} the effective temperature scale for M dwarfs
and its relation to mass and luminosity and {2} the conversion from an
absolute magnitude in some passband to a bolometric magnitude.  The
observations were executed as scheduled, and no anomalies were noted.

   1.24 Completed STIS/CCD/NIC/1/2/WF/PC-2 7568 (Spectroscopy of 3C Radio
Galaxy Optical Jets)

       The Space Telescope Imaging Spectrograph (CCD), the Near Infrared
Camera (Cameras One and Two) and the WF/PC-2 were all used to make
observations of the optical jets coming off of the radio galaxy 3C268.3.
These data will be used to determine the nature of the phenomena: whether
synchrotron jet radiation, entrained gas, ionized clouds or star-formation.
These data will also be used to study the inner populations and dynamics of
the galaxies.  The observations were completed as scheduled, and no
problems were reported.

   1.25 Completed Two Sets of NIC/1/2/3 7239 (Surface Compositions of
Kuiper Belt Objects)

       The Near Infrared Camera (Cameras One, Two, and Three) was used to
make observations of the Kuiper Belt object 1994TB in order to study its
surface composition.  The surfaces of Kuiper Belt Objects contain a record
of formative and dynamical processes in the outer solar system.  The
observations were executed as scheduled, and no anomalies were noted.

   1.26 Completed NIC/1 7892 (Narrow-band Imaging of BAL QSOs)

       The Near Infrared Camera (Camera One) was used to make narrow band
observations of the BL-Lac (BAL) QSO Q0932+501.  The detection of extended
emission-line gas structures in BAL QSOs would offer another means of
investigating the BAL QSO phenomenon as well as establishing a new probe of
material in galaxies at high redshift.  The observations were completed as
planned, and no problems were reported.

   1.27 Completed NIC/1 7867 (NICMOS Imaging of the Dusty CfA Seyfert
Nuclei) FGS 7968 ()

       The Near Infrared Camera (Camera One) was used to make imaging
observations of the dusty CfA class Seyfert galaxy NGC-7674.  These data
will allow us to determine if the Seyfert 1/2 dichotomy is best explained
by the unified model, the evolutionary picture, or a combination of both of
these scenarios.  The observations were executed as scheduled, and no
anomalies were noted.

   1.28 Completed Two Sets of 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 BD+28D4211 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.

   1.29 Completed NIC/1/2/3 7826 (Near-IR Photometry of M-31's Metal-Rich
Globular Clusters)

       The Near Infrared Camera (Cameras One, Two and Three) were used to
make observations of the metal-rich globular cluster G280 in galaxy M-31.
The high metallicities of the program clusters will make these observations
of particular interest for furthering our understanding of the evolution of
metal rich stars, and for the population synthesis models meant to study
the stellar content of distant, unresolvable bulges and elliptical
galaxies.  As described in HSTAR 6665 and 2.1 the acquisition for this
proposal defaulted to fine lock on one FGS only.  Otherwise, the
observations were executed as scheduled, and no further anomalies were
noted.

   1.30 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.  As described in HSTAR 6665
and 2.1 the acquisition for this proposal defaulted to fine lock on one FGS
only.  Otherwise, the observations were completed as planned, and no
further anomalies were reported.

   1.31 Completed NIC/2/3 7453 (The SBF Hubble Diagram)

       The Near Infrared Camera (Camera Two and Three) was used to make
deep NICMOS observations of galactic clusters NGC-1380 and NGC-1379 to
determine Their distance using the surface brightness fluctuation {SBF}
method.  HST is essential for its high spatial resolution which makes it
possible to detect and remove globular clusters and background galaxies
that contaminate the SBF measurement.  The observations were executed as
scheduled, and no anomalies were noted.

   1.32 Completed NIC/1/2/3 7829 (Mapping H_2 Emission around T Tauri Stars)

      The Near Infrared Camera (Cameras One, Two, and Three) was used to
study the distribution of circumstellar dust and molecular {H_2} gas around
the classical T Tauri star HD283654 {cTTS}, probing both the near
circumstellar environment {the accretion disk} as well as the environment
further out where strong winds from these stars may be interacting with
remnants of the cloud material from which they formed.  The primary goal is
to map the distribution of the molecular gas around cTTS.  The proposal
completed nominally.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 28
                                        Successful : 28

       HSTAR 6665 describes the acquisition occurring at 256/134022Z which
defaulted to fine lock backup on FGS-2 after a walkdown failure on FGS-1.
The proposals described in 1.3, 1.6, 1.29, and 1.30 may have been affected.

                          Scheduled Reacquisitions : 20
                                        Successful : 20

   2.2 FHST Updates:

                              Scheduled : 64
                             Successful : 61

       The FHST roll update scheduled for 255/020518Z failed due to FHST-2.
The preceding acquisition had been successful, and the two subsequent full
mode FHST updates were good as was the following acquisition.  HSTAR 6663
documents this occurrence.

       The full maneuver updates at 257/0507Z and 257/0510Z both failed,
although the subsequent acquisition was successful.  HSTAR 6667 was written.

   2.3 Operations Notes:

       Using ROP SR-1, the SSR EDAC error counter was reset nine times.

       The Battery #6 Capacity Check Test was completed.  Battery #6 was
placed back online at 254/1507Z.

       The GRGT Proficiency Test was run between 254/1805Z and 254/1824Z.
The STOCC executed NOOP and FIVEBLK commanding procedures using PRS while
receiving 32 kbps telemetry on both the PRS and CCS String "B".

       At 255/053556Z, there was a NICMOS single bit error counter
increment.  The error log was dumped at 255/0608Z, and the ground system
limit was incremented to 13.  HSTAR 6664 was written.

       The STIS MCE-1 reset at 256/182429Z while in an SAA interval and
while the high voltage was off.  Using ROP NS-12, the STIS flight software
error counter was reset.  The STIS MCE will be  recovered via SMS
commanding at the time of the next MAMA-1 turn-on which occurs at
257/2131Z.  HSTAR 6666 documents these events.

       Reconditioning was performed on ESTR-3 at 257/0328Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH