HUBBLE SPACE TELESCOPE

                        DAILY REPORT #2475

PERIOD COVERED:  0000Z (UTC) 10/08/99 - 0000Z (UTC) 10/11/99

Daily Status Report as of 2814/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed STIS/CCD 8409 (STIS CCD Bias Monitor C8)

        The Space Telescope Imaging Spectrograph (CCD) was used to make a 
CCD bias calibration observation.  This is 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 to track the evolution of hot columns.  The 
observations were executed as scheduled, and no anomalies were reported.

    1.2 Completed Twelve Sets of WF/PC-2 8457 (UV Earthflats)

        The WF/PC-2 was used to make a ultraviolet Earth flat calibration 
image.  This is to improve the quality of pipeline the ultraviolet 
flatfields.  The observations were completed as scheduled, and no problems 
were reported.

    1.3 Completed Two Sets of WF/PC-2 8216 (T Tauri Star Snapshot Survey 
II. Completing the CTTs Sample)

        The WF/PC-2 was used to make observations of the T-Tauri class 
stars known as GM-Tau and CIDA-1 as part of Snapshot Survey II.  This 
database will be of fundamental importance to understanding the nature of 
planet-forming environments and their frequency in the galaxy.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.4 Completed Five Sets of STIS/CCD 8408 (STIS CCD Dark Monitor C8)

        The Space Telescope Imaging Spectrograph (CCD) was used to make a 
CCD bias calibration observation.  This is to monitor the darks for the 
STIS CCD.  The observations were executed as scheduled, and no anomalies 
were reported.

    1.5 Completed Two Sets of STIS/CCD 8406 (POMS Test Proposal: STIS 
Non-Scripted Parallel Proposal Continuation V)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
high galactic latitude observations taken in parallel with the prime 
science observations as part of a POMS proposal.  This is a STIS 
non-scripted parallel Condition V proposal.  The observations were 
completed as scheduled, and no anomalies were reported.

    1.6 Completed STIS/CCD/MA1 8188 (Snapshot Spectroscopic Diagnostic 
Survey of the Symbiotic Stars)

        The Space Telescope imaging Spectrograph (CCD and MA1) was used to 
make ultraviolet observations of star Draco-C-1 as part of a snapshot 
spectroscopic diagnostic survey of symbiotic stars.  Using these data we 
will be able to establish meaningful statistical limits on the nature of 
hot component sources of ionization and fundamental wind parameters, which 
are vital steps toward understanding the accretion hydrodynamics and the 
evolutionary status of symbiotic systems.  A wavelength calibration image 
was also taken.  The observations were executed as scheduled, and no 
anomalies were noted.

    1.7 Completed Five Sets of WF/PC-2 8443 (WF/PC-2 Cycle-8 Supplemental 
Darks pt1/3)

        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 were completed as planned, and no problems were 
reported.

    1.8 Completed Four Sets of WF/PC-2/STIS/CCD 8169 (HST-Galileo Io Campaign)

        Both the WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) 
were used to make observations of Jupiter's moon Io.  Io plays a central 
role in the Jovian system, yet the mechanisms that couple its volcanoes, 
the tenuous atmosphere, the escaping corona and the plasma torus remain 
elusive.  In 1999 there is the unique opportunity to combine HST 
observations with the Galileo close flybys of Io.  A wavelength calibration 
image was also taken.  The observations were completed as planned, and no 
problems were reported.

    1.9 Completed STIS/CCD/MA1 8241 (A Snapshot Survey of Interstellar 
Absorption Lines)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
make high resolution Echelle spectrographic observations of the standard 
ultraviolet star HD232522 as part of a snapshot survey of interstellar 
absorption lines.  A wavelength calibration image was also taken.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.10 Completed STIS/CCD 8236 (Black Holes and Gas Disks in a Complete 
Sample of Radio-Loud Ellipticals - II: Kinematics)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of the radio-loud elliptical galaxy NGC-741.  From these 
observations we will measure the black hole masses, determine the nature, 
kinematics, and structure of the central gas disks and obtain a modeled 
upper limit to their mass accretion rates.  A wavelength calibration image 
was also taken.  The observations were completed as planned, and no 
problems were reported.

    1.11 Completed Ten 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.

    1.12 Completed STIS/CCD 7310 (The Interaction of Accretion Disks with 
Protostellar Binaries)

        The Space Telescope Imaging Spectrograph (CCD) was used to study 
the interaction of the accretion disk with the protostellar binary system 
LKHA331.  This should determine how the accretion disk interacts with stars 
in young binary systems and will measure the rates that mass accumulates 
onto each component of the pair.  A wave length calibration image was also 
taken.  The observations were executed as scheduled, and no anomalies were 
noted.

    1.13 Completed Two Sets of STIS/CCD 8238 (Collimated Jets and Low 
Velocity Forbidden Emission from T Tauri Stars)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of the T-Tauri class stars DD-Tau and CW-Tau and to study 
thier collimated jets and low velocity forbidden emission lines.  This is a 
program of slitless spectroscopy to image both the low velocity component 
{LVC} and high velocity component of forbidden line emission in single and 
binary low mass stars undergoing disk accretion.  A calibration CCD flat 
image was also taken.  The observations were executed as scheduled, and no 
anomalies were noted.

    1.14 Completed WF/PC-2 8345 (Multipolar Bubbles and Jets in Very Low 
Excitation Planetary Nebulae - A WF/PC-2 H-Alpha Imaging Survey)

        The WF/PC-2 was used to make H-Alpha observations of the very low 
excitation planetary nebula PK235-03D1 in order to study its multipolar 
bubbles and jets.  Comparison of the morphology of this young PNe sample 
with more evolved PNe populations will set new constraints on models for 
the production of jet-like outflows and nebular evolution.  The 
observations were completed as planned, and no problems were reported.

    1.15 Completed WF/PC-2 7495 (Survey of Gravitational Lenses as 
Cosmological Tools)

        The WF/PC-2 was used to make survey observations of the object 
FBQ0951+26 by obtaining deep, high-resolution images in the optical and 
near IR in order to see if it is gravitationally lensed and could be used 
as a cosmological tool.  The observations were executed as scheduled, and 
no anomalies were noted.

    1.16 Completed FOC/96 7923 (FOC F/96 Turnon)

        The Faint Object Camera (f/96) was used to take an internal flat 
and a dark to ensure that the 30-day limit for the FOC is not 
exceeded.  The observations were executed as scheduled, and no anomalies 
were noted.

    1.17 Completed Two Sets of WF/PC-2 8263 (Snapshots of Sub-mJy Starburst 
Galaxies)

        The WF/PC-2 was used to make observations of the starbursting 
galaxies Gal-085547 and GAL-0854585.  Some of the most ambitious and widely 
cited extragalactic observations in recent years have been the constraints 
made on the star formation history of the Universe.  The observations were 
completed as planned, and no anomalies were reported.

    1.18 Completed Two Sets of STIS/CCD 8549 (POMS Test Proposal: STIS 
non-scripted parallel proposal continuation

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
high galactic latitude observations as part of a non-scripted POMS Test 
Proposal. The observations were completed as scheduled, and no problems 
were reported.

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

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

    1.20 Completed WF/PC-2 8441 (WF/PC-2 Decontaminations and Associated 
Observations Pt. 1/2)

        The WF/PC-2 was used to make its monthly decontamination 
operations.  Calibration observations were made of object GRW+70D582.  Also 
included are instrument monitors tied to decons: photometric stability 
check, focus monitor, pre- and post-decon internals {bias, internal flats, 
k-spots, and darks}, and ultraviolet throughput checks.  The observations 
were executed as scheduled, and no anomalies were noted.

    1.21 Completed STIS/CCD/MA1/MA2 8402 (High Resolution STIS Observations 
of HD 202347)

        The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was 
used to make observations of the star HD202347.  This object is a likely 
FUSE ERO object, and as such, the higher resolution STIS data are critical 
for modeling the velocity structure of the absorption profiles.  A 
wavelength calibration image was also taken.  The observations were 
executed as scheduled, and no anomalies were noted.

    1.22 Completed STIS/MA1/MA2 8144 (UV Spectroscopic Snapshots of FUSE 
AGN Targets)

        The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was 
used to make far ultraviolet spectrographic snapshot observations of the 
FUSE AGN target KAZ102.  This object is currently scheduled to be observed 
by the Far Ultraviolet Spectroscopic Explorer {FUSE}.  The observations 
were executed as scheduled, and no anomalies were noted.

    1.23 Completed STIS/CCD 8176 (Confirmation and Characterization of 
Brown Dwarfs and Giant Planets from NICMOS 7226/7227)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
confirmation and characterization observations of object BRI0021-21.  This 
is a continuation of NICMOS 7226/7227 using the STIS.  A systematic search 
for giant planet and brown dwarf companions to stars in the solar 
neighborhood was the cornerstone of the NICMOS IDT's Environments of Nearby 
Stars {EONS} program.  The observations were completed as planned, and no 
anomalies were reported.

    1.24 Completed Three Sets of STIS/CCD 8313 (Imaging the Host Galaxies 
of High Redshift Type Ia Supernovae)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of 97195, 9579 and 97182 and its host galaxy.  The propose is 
to obtain snapshot, unfiltered STIS images of distant galaxies of known 
redshift which have hosted supernovae {SNe} of Type IA found via the 
Supernova Cosmology Project.  The observations were completed as scheduled, 
and no anomalies were reported.

    1.25 Completed STIS/MA1/MA2 7262 (Exploring the Outer Heliosphere with 
STIS)

        The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to 
make observations of star HD155886.  Recent models of the heliosphere 
predict that charge exchange processes should produce a region of hot H-I 
just outside the heliopause.  A wavelength calibration image was also 
taken.  The observations were completed as planned, and no problems were 
reported.

    1.26 Completed STIS/CCD/MA1 8287 (A Search For Transparent Lines of 
Sight With Intergalactic He-II Absorption Towards 26 Bright z > 2.9 Quasars)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
make He-II absorption line observations of quasar HE2314-340.  The aim is 
to identify more suitable bright objects for detailed studies of 
intergalactic He-II absorption at a redshift of Z <2.9 and >3.2 .  A 
wavelength calibration observation was also taken.  The observations were 
executed as scheduled, and no anomalies were noted.

    1.27 Completed STIS/MA1 8431 (Doppler Test of Far UV MAMA with Jenkins 
Slit)

        The Space Telescope Imaging Spectrograph (MA1) was used to execute 
a Doppler test to measure the limiting resolving power of the 
far-ultraviolet MAMA using the Jenkins 0.100x0.030 slit.  The observations 
were completed as planned, and no anomalies were noted.

    1.28 Completed STIS/CCD 8229 (Spatially Resolved Spectroscopy of 
Titan's Atmosphere and Surface)

        The Space Telescope Imaging Spectrograph (CCD) was used to observe 
the moon Titan.  The observations will measure the surface reflectivity of 
Titan at 0.9 microns, and map the distribution of haze in the northern and 
southern hemispheres at altitudes where the haze is formed.  The proposal 
completed nominally.

    1.29 Completed WF/PC-2 8301 (A Snapshot Survey of X-ray Selected 
Central Cluster Galaxies)

        The WF/PC-2 was used to make snapshot survey observations of the 
x-ray, central cluster galaxy A795.  Central cluster galaxies are the most 
massive stellar systems known and have been used as standard candles for 
many decades.  The observations were executed as scheduled, and no 
anomalies were noted.

    1.30 Completed STIS/CCD 8037 (STIS Coronographic Imaging of 
Circumstellar Discs)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
coronographic observations of the circumstellar protoplanetary disk around 
the star Fomalaut (a.k.a., Alpha PsA).  The observations were executed as 
scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:

                             Scheduled Acquisitions: 32
                                         Successful: 32

                          Scheduled Re-acquisitions: 13
                                         Successful: 13

    2.2 FHST Updates:

                               Scheduled: 78
                              Successful: 77

        The FHST update at 283/0121Z failed.

    2.3 Operations Notes:

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

        At 281/165614Z, the Gyro 1 motor current flagged out-of-limits high 
(162.40 ma vs. limit of 156.80 ma), and continued to toggle for a 
time.  HSTAR 7301 was written.

        The STIS MCE-2 reset at 282/143606Z while the low voltage was on 
and while outside any SAA interval.  The STIS flight software error counter 
was reset at 282/1442Z as directed by ROP NS-12.  MAMA-2 was recovered via 
normal SMS commanding at 283/0450Z.

        The SI C&DH status buffer was reset at 282/1442Z and at 283/1132Z 
per ROP NS-5.

        The NSSC-1 status buffer was dumped at 282/2339Z per ROP NS-3.

        A full DF-224 memory dump was performed at 283/0103Z as directed by 
ROP DF-1.

        At 283/081223Z, batteries 2 and 4 voltages flagged out-of-limits 
low (27.636 volts vs. limit of 27.64 volts) for five sampling intervals 
near the end of orbit night.  HSTAR 7304 was written.

        At 283/082145Z, the ICU power supply 4 volt parameter flagged 
out-of-limits low (11.19 volts DC vs. limit of 11.3 volts DC) for six 
seconds.  HSTAR 7303 was written.

        The NICMOS FPA temperature sensor for detector 3 was enabled at 
284/0002Z.

        Real-time operations transitioned from CCS "A" string to CCS "B" 
string at 284/0455Z to provide systems administration personnel time for 
maintenance operations.

        ESTR-2 was reconditioned at 284/0622Z per the dictates of ROP RD-7.

        At 284/082241Z, the battery 4 voltage flagged out-of-limits low 
(27.636 volts vs. limit of 27.64 volts) for one telemetry sample near the 
end of the orbit night period.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/DMH