HUBBLE SPACE TELESCOPE

                        DAILY REPORT #2478

PERIOD COVERED:  0000Z (UTC) 10/13/99 - 0000Z (UTC) 10/14/99

Daily Status Report as of 287/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed Two 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.

    1.2 Completed Three 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.

    1.3 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.

    1.4 Completed Two Sets of WF/PC-2 8163 (Trapezium Systems and Stellar 
Jets in 30-Doradus)

        The WF/PC-2 was used to make observations of the 30-Doradus system 
(both the North and South sections).  30-Doradus is the nearest and best 
resolved extragalactic starbursting region.  The observations were 
completed as scheduled, and no anomalies were reported.

    1.5 Completed WF/PC-2 8243 (SINS: The Supernova Intensive Study - Cycle 8)

        The WF/PC-2 was used to make observations of supernova 
LMC-SN1987.  Supernovae reveal the last stages of stellar evolution, create 
the chemical history of the Universe, energize the interstellar gas, and 
occupy the center of attention for the extragalactic distance scale and 
cosmology.  A wavelength calibration image was also taken.  The 
observations were completed as planned, and no problems were reported.

    1.6 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 HD72754 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.

    1.7 Completed Three Sets of 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.

    1.8 Completed STIS/CCD/MA1 8329 (Double Degenerates Among DAO White Dwarfs)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
make observations of the white dwarf star GD561.  The evolution of DAO 
white dwarfs, which have hybrid spectra showing both hydrogen and helium 
lines, is not well understood.  A wavelength calibration image was also 
taken.  The observations were executed as scheduled, and no anomalies were 
noted.

    1.9 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.

    1.10 Completed WF/PC-2 8095 (Accurate Proper Motions of Galactic Halo 
Populations)

        The WF/PC-2 was used to make observations of the SMC in order to 
study the proper motion of its galactic halo population, which include 
globular clusters and dwarf galaxies.  The proper motions of these 
populations will be determined to unprecedented accuracy, approximately an 
order of magnitude better than has been previously possible.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.11 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.

    1.12 Completed WF/PC-2 8192 (A Snapshot Survey of Probable Nearby Galaxies)
        The WF/PC-2 was used to make a snapshot survey images of a probable 
nearby galaxy KK088.  The census of galaxies in the Local Volume of space 
is very incomplete, particularly at the faint end.  The observations were 
executed as scheduled, and no anomalies were noted

    1.13 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.

    1.14 Completed WF/PC-2 8134 (Is the IMF Universal at Low Stellar Masses?)

        The WF/PC-2 was used to make observations of the cluster 
NGC-2100.  Only the HST can provide the resolution and limiting magnitude 
required to reach the low-mass end of the IMF at extragalactic 
distances.  The observations were executed as scheduled, and no problems 
were reported.

    1.15 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.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:

                             Scheduled Acquisitions:  8
                                         Successful:  8
                          Scheduled Re-acquisitions: 11
                                         Successful: 11

        Per HSTAR 7311, there was a loss of lock beginning at 287/032309Z 
that continued until 287/033009Z.  This occurred during a type 3 profile 
slew.  FGSs 1 and 3 went to SSM control.  WF/PC-2 proposal 8184, which 
occurs during the period of the next report, was affected.

    2.2 FHST Updates:

                               Scheduled: 15
                              Successful: 15

    2.3 Operations Notes:

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

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/DMH