HUBBLE SPACE TELESCOPE

                        DAILY REPORT #2489

PERIOD COVERED:  0000Z (UTC) 10/28/99 - 0000Z (UTC) 10/29/99

Daily Status Report as of 302/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed 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.

    1.2 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 HS1700+641.  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.

    1.3 Completed WF/PC-2 8444 (WF/PC-2 CYCLE-8 Internal Monitor)

        The WF/PC-2 was used to make a bias, and an internal flat, 
observation as part of a Cycle-8 monitoring program to monitor the health 
of the cameras.  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.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.4 Completed STIS/MA1/MA2 7436 (A Complete Sample of Hot Post-AGB 
Stars in Globular Clusters)

        The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to 
make observations of the globular cluster NGC-104.  Recent observations 
with the Ultraviolet Imaging Telescope have provided a complete sample of 
the hot post asymptotic giant branch {post-AGB} population in fourteen 
globular clusters.  A wavelength calibration image was also taken.  The 
observations were completed as planned, and no anomalies were reported.

    1.5 Completed Two Sets of 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.

    1.6 Completed STIS/CCD 8202 (Bright Quasar Close Lensing Search)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of HCLQ1233+4 as part of a second generation survey to search 
for bright lensing quasars.  With the restored PSF, new images will be 
considerably more sensitive to the presence of both close separation and 
faint lens components, and because STIS reaches two magnitudes fainter the 
PC, the new snapshot images will have much greater dynamic range.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.7 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.

    1.8 Completed WF/PC-2 7503 (Precise Astrometry in the Core of the 
Globular Cluster 47 Tuc: A Complete Census of High-Velocity Stars)

        The WF/PC-2 was used to make astrometric observations of high 
velocity stars in the core region of the Globular Cluster 47-Tuc (a.k.a., 
NGC-104).  If more progress is to be made in the search for high-velocity 
stars in 47-Tuc, it must be made by obtaining proper motions, a task for 
which only HST is suitable.  The observations were executed as scheduled, 
and no anomalies were noted.

    1.9 Completed 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.

    1.10 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.

    1.11 Completed Two Sets of STIS/CCD 8545 (POMS Test Proposal: STIS 
non-scripted parallel proposal continuation VI)

        The Space Telescope Imaging Spectrograph (CCD) was used to make low 
galactic latitude, non-scripted parallel observations as part of a POMS 
test proposal.  The observations were completed as planned, and no 
anomalies were reported.

    1.12 Completed WF/PC-2 8332 (A Snapshot Survey of Symbiotic Stars)

        The WF/PC-2 was used to make observations of the star AS201 as part 
of a snapshot survey of symbiotic stars.  A fuller understanding of the 
symbiotic star phenomenon is important to several branches of present day 
astrophysics including mass loss, accretion onto compact objects, and 
photoionization and radiative transfer in gaseous nebulae.  The 
observations were completed as planned, and no anomalies were reported.

    1.13 Completed STIS/CCD 8549 (POMS Test Proposal: STIS non-scripted 
parallel proposal continuation III)

        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.

    1.14 Completed STIS/CCD 8246 (The Youngest Massive Star Clusters in the 
SMC as Clues to Star Formation in the Early Universe)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations the young massive star cluster SMC-N81 that is located in the 
Small Magellanic Cloud.  These are the youngest massive stars accessible to 
direct observations at ultraviolet and optical wavelengths.  A wavelength 
calibration image was also taken.  The observations were executed as 
scheduled, and no anomalies were noted.

    1.15 Completed STIS/CCD/MA1 7295 (Galaxy Rotation Curves at Large 
Radius using Lyman-alpha Absorption Lines)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
make rotational spectrographic observations of the galaxy MARK110.  This is 
to investigate the outer rotation curves of eight spiral galaxies at very 
large galactocentric radii by using the kinematical information from 
Lyman-alpha absorption lines in the spectra of background quasars.  The 
observations were executed as scheduled, and no problems were reported.

    1.16 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.

    1.17 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 HD30122 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.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:

                             Scheduled Acquisitions: 7
                                         Successful: 7

        The acquisition at 302/003808Z required three attempts to acquire 
fine lock.  QDVEFGS1 was out-of-limits high at 136.325.  The take data flag 
cam up at 302/004102Z.  The subsequent re-acquisition proceeded 
nominally.  HSTAR 7330 was written.

                          Scheduled Re-acquisitions: 9
                                         Successful: 9

    2.2 FHST Updates:

                               Scheduled: 16
                              Successful: 16

        As documented in HSTAR 7329, the FHST map scheduled for 301/094200Z 
failed when no stars were found in FHST-2.

    2.3 Operations Notes:

        The flight operations team returned to the STOCC area from the 
Building 23 back-up facility upon the conclusion of the two Joint 
Integrated Simulations conducted this week.

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

        The NSSC-1 status buffer was bumped at 301/1638Z per ROP NS-3.

        A TTR was written for multiple access return link dropout from 
301/182554Z until 301/182639Z.  The reason for the failure is unknown.  The 
data lost during the period is unrecoverable.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/DMH