HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2276

PERIOD COVERED:  0000Z (UTC) 12/22/98 - 0000Z (UTC) 12/23/98

Daily Status Report as of 357/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Twelve Sets of NIC/1/2/3 7963 (Darks: Warming Up)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
monitor the detector dark current during the interval between the end of
science observations and the exhaustion of cryogen and subsequent warming
of the dewar to > 100K.  As described in 2.1 and HSTAR 6825, the
acquisition for the seventh iteration of this proposal failed, the take
data flag remained down, and two observations were lost.  Othewise, the
observations were completed as planned, and no further anomalies were
noted.

   1.2 Completed Two 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.

   1.3 Completed Three Sets of WF/PC-2 7713 (WF/P-2 Cycle 7 Supplemental
Darks pt3/3)

       The WF/PC-2 was used to make supplemental dark calibration images.
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 completed as planned, and no anomalies were noted.

   1.4 Completed FOC/96 6350 (FOC spectroscopy of BALQSOs)

       The Faint Object Camera (f/96) was used to make ultraviolet
spectrographic images of BALQSO 0029+0722 which is known to show broad
emission lines from abundant ions.  This will help us improve our knowledge
of these BAL class objects.  The observations were executed as scheduled,
and no anomalies were noted.

   1.5 Completed WF/PC-2 6751 (Is the Central Star of K 648 in M15 a Close
Binary?)

       The WF/PC-2 was used to make observations of the central star of the
planetary nebula K648 which is located in globular cluster M-15 to
determine if this star is a binary star.  Pre-repair HST images reveal that
the nebula is strongly elliptical in shape, and shows blobs on either side
of the central star.  The observations were executed as scheduled, and no
anomalies were noted.

   1.6 Completed Five Sets of NIC/1/2/3 8083 (FLATs: Warming Up - continuation)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
monitor the flat fields during the interval between the end of science
observations and the exhaustion of cryogen and subsequent warming of the
dewar to > 100K.  The observations were executed as scheduled, and no
anomalies were noted.

   1.7 Completed Two Sets of STIS/CCD 7396 UV Cyclotron Spectroscopy of the
High- Field Polar UZ Fornacis

       The Space Telescope Imaging Spectrograph (CCD) was used to make
ultraviolet cyclotron spectroscopy observations of variable star UZ-For.
This is a high magnetic field star (i.e., 53 Mega Gauss).  A wavelength
calibration image was also taken.  The observations were executed as
scheduled, and no anomalies were noted.

   1.8 Completed 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.  The observations were completed as planned, and no problems were
reported.

   1.9 Completed WF/PC-2 6557 (WF/PC-2 Imaging of Intermediate Redshift
Absorption Selected Galaxies)

       The WF/PC-2 was used to make observations of the galaxy Q010-FIEL
where a halo appears to be absorbing light from the background
quasi-stellar object.  The observations were completed as planned, and no
problems were reported.

   1.10 Completed Four 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 taken in parallel with the prime science
observations.  The observations were completed as planned, and no problems
were reported.

   1.11 Completed Three Sets of STIS/CCD 8084 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
non-scripted parallel high galactic latitude observations as part of POMS
test proposal.  The observations were executed as scheduled, and no
anomalies were noted.

   1.12 Completed WF/PC-2 6587 (Black Holes and Cores of Early-Type Galaxies)

       The WF/PC-2 was used to be used to make observations of early-type
galaxy NGC-1172 in order to study its nuclear core region and its possible
black hole.  The campaign to find black holes in the centers of galaxies
using HST has so far been highly successful.  As described in 2.1 and HSTAR
6825, the acquisition for this proposal failed, the take data flag remained
down, and seven observations were lost.

   1.13 Completed STIS/CCD 7514 (HST Observations of Orion -- Probing the
Origin of Abundance Anomalies in H II Regions)

The Space Telescope Imaing Spectrograph (CCD) was used to make observations
of the H-II region (i.e., NGC-1976) which is within the Orion Nebula
(a.k.a., M-42) in order to probe the origin of the abundance anomalies in
the nebula.  The purpose the  of observations is to obtain a set of
emission-line diagnostics of the Orion Nebula in its brightest and
best-resolved H II region.  A wavelength calibration image was also taken.
The observations were completed as scheduled, and no anomalies were
reported.

   1.14 Completed WF/PC-2 6659 (A Search For Superplanets Around Weak T-
Tauri Stars)

       The WF/PC-2 was used to make observations in the 1 micron band of
the T-Tauri class star HBC376 in order to search for superplanets.  Weak
T-Tauri class stars are thought to have dissipated their circumstellar
disks recently, possibly by forming planetary systems.  The observations
were completed as planned, and no anomalies were reported.

   1.15 Completed Two Sets of WF/PC-2 6844 (M87 Globular Clusters {#6746
Parallel Field Follow-up })

       The WF/PC-2 was used to make observations of the globular clusters
which are located on the "south" end of galaxy M-87.  Sub-arcsecond
dithering was employed to reduce the effect of undersampling of the point
spread function.  The observations were executed as scheduled, and no
anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 9
                                        Successful : 8

       The guide star acquisition scheduled at 356/101359Z failed when the
search radius limit had been exceeded on both FGS-2 and FGS-3.  FHST
updates and maps before and after the failure indicated good attitude.
HSTAR 6825 was written.  The proposals described in 1.1 and 1.12 were
affected.

                          Scheduled Reacquisitions : 5
                                        Successful : 5

   2.2 FHST Updates:

                              Scheduled : 23
                             Successful : 23

   2.3 Operations Notes:

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

       A GRGT proficiency pass was conducted at 356/1352Z.

       As directed by ROP NS-11, the NICMOS flight software error counter
was cleared at 356/1435Z.

       The STIS MAMA-1 MCE reset at 356/215617Z during a SAA while MAMA-1
was in low voltage.  HSTAR 6826 was written.  The STIS error counter was
cleared at 356/2230Z via ROP NS-12.  Recovery was accomplished via SMS
commands at 357/035944Z, the time on the next high voltage on commanding.

        Due to the holidays, the next HST Daily Report will be issued on
Wednesday, December 30, 1998.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH