HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2281

PERIOD COVERED:  0000Z (UTC) 01/06/99 - 0000Z (UTC) 01/07/99

Daily Status Report as of 007/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 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.

   1.2 Completed Twelve Sets of NIC/1/2/3 8093 (DARKs: Warming Up - Part II)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make a series of dark calibration observations.  The purpose of this
proposal is 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
6866, the acquisition for the next to last iteration of this proposal
defaulted to fine lock backup on one FGS only.  Otherwise, the observations
were executed as scheduled, and no further anomalies were noted.

   1.3 Completed STIS/CCD/MA1 7432 (Morphological and Spectral Evolution of
Galaxies)

       The Space Telescope Imaging Spectrograph (CCD and MA1) were used to
make observations to study the morphological and spectral evolution of the
galaxy 3C196.1-1.  A library of ultraviolet images of normal galaxies at
low redshifts is essential to our understanding of the properties and
evolution of the high redshift universe.  The observations were completed
as planned, and no problems were reported.

   1.4 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.

   1.5 Completed Four 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.

   1.6 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.

   1.7 Completed FGS 7678 (Monitor the Long-Term Stability of FGS-1R)

       The goal of these measurements is to monitor the internal positional
stability of the FGSs by measuring many stars in the M35 check field
repeatedly over a one year period. The results of these measurements are
the stability characteristics of the FGS to allow an estimate of
differential corrections to OFAD and Plate Scale.  The observations were
completed as planned, and no problems were reported.

   1.8 Completed NIC/2/3 8082 (NICMOS Pure Parallel Fall 98)

       The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel observations while another instrument is prime.  The
observations were executed as scheduled, and no anomalies were noted.

   1.9 Completed NIC/2/3 8063 (NICMOS Pure Parallel Sponge - Backup)

       The Near Infrared Camera (Cameras Two and Three) was used to make
observations taken in parallel with the prime science observations.  This
proposal is PRE-the new FOM default.  The observations were executed as
scheduled, and no anomalies were noted.

   1.10 Completed STIS/CCD 7763 (A Test For Products of Oxygen Burning in
the Crab Nebula)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the Crab Nebula (a.k.a., M-1 or NGC-1952) to test for
products of oxygen burning.  Young supernova remnants are excellent
laboratories for investigating how stars make elements, and the Crab Nebula
can provide unique information about the supernova process and associated
heavy element production.  A wavelength calibration observations was also
taken.  The observations were executed as scheduled, and no anomalies were
noted.

   1.11 Completed Four Sets of WF/PC-2 8061 (POMS Test Proposal: WF-II
Backup Parallel Archive Proposal)

       This is a POMS test proposal designed to simulate scientific plans.
The proposal was executed as planned, and no anomalies were reported.

   1.12 Completed WF/PC-2 6776 (A Comparative HST Imaging Study of Radio
Galaxies and Hosts)

       A clear understanding of the nature of the host galaxies of
radio-quiet quasars, radio-loud quasars and radio galaxies is of central
importance in any attempt to unify and relate the three main classes of
powerful active galaxies.  Existing HST studies of quasar hosts, whilst
producing many interesting new results, have yielded surprisingly little
hard information on the properties of the hosts themselves.  This imaging
study using the WF/PC-2 will remedy this situation by undertaking redder,
line-free observations of AGN 1215-033.  As described in 2.1 and HSTAR
6866, the acquisition for this proposal defaulted to fine lock backup on
one FGS only.  Otherwise, the proposal completed with no further reported
problems.

   1.13 Completed Two Sets of STIS/CCD/MA1/MA2 7303 (UV Spectroscopy of
Wolf-Rayet-Type Central Stars in the Magellanic Clouds)

       The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was used
to make spectrograph observations of the nebulei and Wolf-Rayet class stars
in The Large Magellanic Cloud (LMC-MA17-C and LMC-SM61).  Consistent
modelling of the nebulae will add further information about the
evolutionary past of the central stars.  A wavelength calibration image was
also taken.  The observations were completed as scheduled, and no anomalies
were noted.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 6
                                        Successful : 6

       The acquisition at 006/182318Z defaulted to fine lock backup on
FGS-1 only when FGS-3 could not achieve fine lock.  HSTAR 6866 was written.
The proposals described in 1.2 and 1.12 may have been affected.

                          Scheduled Reacquisitions : 6
                                        Successful : 6

   2.2 FHST Updates:

                              Scheduled : 10
                             Successful : 10


   2.3 Operations Notes:

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

       Two TTRs were written: one for a data inversion hit at 006/1247Z and
another for missing minor frames (20 at 006/1609Z and 50 at 007/0928Z.

       As predicted, the NICMOS FPA temperatures reached the saturation
point of 78.1 degrees K early yesterday morning.  HSTAR 6861 was written.
Real-time operations personnel sent the commands to inhibit filter wheel
operations at approximately 006/1432Z.  Memory monitors confirmed that the
filter wheels were inhibited.  NICMOS will continue execution of the
engineering proposals until next week's SMS begins execution at the
beginning of day 011.  At that time, the NICMOS will be transitioned to the
SAA operate mode and remain there until SM3 when the installation of the
NICMOS Cooling System is expected.

       Another period of CCS commanding to the spacecraft was successfully
concluded at 006/2250Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH