HUBBLE SPACE TELESCOPE

                        DAILY REPORT #2474

PERIOD COVERED:  0000Z (UTC) 10/07/99 - 0000Z (UTC) 10/08/99

Daily Status Report as of 281/0000Z

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 Three 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 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 974 and 9748 and their host galaxies.  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.

    1.4 Completed Two 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.

    1.5 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.

    1.6 Completed WF/PC-2 6752 (Global Mapping of the Opposition Surge on 
the Galilean Satellites)

        The WF/PC-2 was used to make observations of Jupiter's moons 
Ganyemede, Io, Europa and Callisto.  This is to construct ~200 km 
resolution global maps of the opposition brightness surge for each of the 
four Galilean satellites to support and complement Galileo mission science 
investigations.  The observations were executed as scheduled, and no 
anomalies were noted.

    1.7 Completed STIS/MA1 8428 (STIS FUV-MAMA Cycle 8 Flats)

        The Space Telescope Imaging Spectrograph (MA1) was used to make a 
series of far-ultraviolet calibration flats with the Kr lamp for the 
construction of on-orbit D-flats for select modes.  The calibration images 
were completed as planned, and no problems were reported.

    1.8 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.

    1.9 Completed STIS/CCD/MA2 8257 (VV Cephei: The Egress from 
Chromospheric Eclipse)

        The Space Telescope Imaging Spectrograph was used to make 
choromospheric observations of the egress from eclipse of star 
HD60414.  This is to make observations of the long-period {20.3 yrs} 
eclipsing binary VV Cephei {M2 Iab + B0} as it continues to emerge from 
chromospheric eclipse.  A wavelength calibration image was also taken.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.10 Completed Two 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.

    1.11 Completed WF/PC-2 8390 (Expansion Parallax Distances to Planetary 
Nebulae)

        The WF/PC-2 was used to make observations of the planetary nebula 
IC2448 in order to study its parallax distance.  The largest impediment to 
our understanding of planetary nebulae is the lack of reliable 
distances.  The observations were executed as scheduled, and no anomalies 
were noted.

    1.12 Completed Four 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.

    1.13 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 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.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:

                             Scheduled Acquisitions: 8
                                         Successful: 8

                          Scheduled Re-acquisitions: 7
                                         Successful: 7

    2.2 FHST Updates:

                               Scheduled: 22
                              Successful: 22

    2.3 Operations Notes:

        The SSR EDAC error counter was cleared three times per ROP SR-1.

        A TTR was written since an NCC cold start resulted in no GCMR 
capability from 280/1710Z until 280/1721Z.

        The NICMOS FPA temperature sensor for detector 3 was enables at 
280/2133Z.

        The CCS FEP did not ingest data for three times slots: from 
281/0049Z-0127Z, from 281/0144Z-0212Z, and from 281/0231Z-02238Z.  At the 
same times PRS showed no problems, and was locked on data.  The response 
team was notified.  The problem did not re-occur.  The cause is currently 
unknown.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/DMH