HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2043

PERIOD COVERED:  0000Z (UTC) 01/20/98 - 0000Z (UTC) 01/21/98

Daily Status Report as of 021/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of WF/PC-2 7620 (WF/PC-2 Cycle 7 Standard Darks)

       The WF/PC-2 was used to make a series of Cycle 7 standard dark
calibration images.  This dark calibration program obtains dark frames
every week in order to provide data for the ongoing calibration of the CCD
dark current rate, and to monitor and characterize the evolution of hot
pixels.  The observations were executed as scheduled, and no anomalies were
noted.

   1.2 Completed STIS/CCD 7900 (STIS CCD Pure Parallels for NIC/3 HDF)

       The Space Telescope Imaging Spectrograph (CCD) was used to make pure
parallel, ultraviolet, slitless, observations with the NIC/3 Camera.  This
proposal will run during the orbits devoted to NICMOS Hubble Deep Field
(HDF) prime proposal 7235.  The observations were completed as scheduled,
and no anomalies were reported.

   1.3 Completed STIS/CCD 7802 (Daily Darks to Update Acquisition Bad Pixel
Table)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations to obtain daily darks to update the acquisition
bad pixel table.  These darks are intended to identify hot pixels for
update to the acquisition on-board FSW hot pixel table.  Daily hot pixel
lists can also be used for science data analysis.  The observations were
executed as scheduled, and no anomalies were noted.

   1.4 Completed Two Sets of STIS/MA1/MA2 7921 (STIS MAMA Pure Parallels
for NIC/3 HDF - Spec)

       The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to
make pure parallel, ultraviolet observations to be used in the NIC/3 HDF
campaign.  The MAMA images will be used to search for Lyman-break galaxies
at z>2.0, and z>1.0.  The observations were executed as scheduled, and no
anomalies were noted.

   1.5 Completed STIS/MA2 7604 (Cycle 7 MAMA Dark Measurements)

       The Space Telescope Imaging Spectrograph (MA2) was used to make MAMA
dark measurements.  These darks will be used in later image reductions and
also trended over the instrument's life time as an indicator of the
detector's degradation or damage.  The observations were completed as
scheduled, and no problems were reported.

   1.6 Completed Two Sets of STIS/MA1/MA2 7920 (STIS MAMA Pure Parallels
for NIC/3 HDF)

       The Space Telescope Imaging Spectrograph (MA1 AND MA2) was used to
make parallel field, ultraviolet imaging to search for Lyman-break galaxies
at z>2.0, and z>1.0.  The observations were completed as planned, and no
problems were reported.

   1.7 Completed NIC/3 7815 (NICMOS Earth Flats)

       The Near Infrared Camera (Camera Three) was used to make a Earth
flat field calibration image.  This proposal obtains a series of earth
flats for a subset of narrow and medium band NIC/3 filters in advance of
the NIC/3 campaign.  These flats will be used to generate the master flats
for narrow-band filters and to determine the OTA illumination pattern as a
function of wavelength.  The observations were completed as planned, and no
anomalies were reported.

   1.8 Completed NIC/1/3 7813 (NIC/3 HDF Darks)

       The Near Infrared Camera (Cameras One and Three) was used to make
internal dark calibration images which will be used when processing the
Hubble Deep Field images during the first NICMOS Camera Three campaign.
The observations were executed as scheduled, and no anomalies were noted.

   1.9 Completed NIC/1/2/3 7223 (Spectrophotometry and Imaging of Pluto and
Charon)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of Charon.  Detailed spectra of the individual members of
the Pluto-Charon system are not known.  The observations were completed as
scheduled, and no problems were reported.

   1.10 Completed NIC/1 7693 (NICMOS Pupil Transfer Function)

       The Near Infrared Camera (Camera One) was used to make observations
of P177D in order to perform pupil transfer function observations.  The
output of this program will be a two-dimensional surface fit that will give
the large scale corrections needed to flat-field the images to an accuracy
of about 2%.  Also, changes in the PSF will be measured as a function of
position within the cameras.  The observations were executed as scheduled,
and no anomalies were noted.

   1.11 Completed NIC/3 7919 (NICMOS Camera 3 Campaign Snapshots)

       The Near Infrared Camera (Camera Three) was used to make images of
galaxy NGC-6207 as part of the NICMOS Camera 3 campaign snapshots.  The
proposal is to obtain wide field snapshot images of nearby galaxies in
Paschen Alpha which is inaccessible from the ground.  As described in 2.1,
this proposal executed on gy control only.  Otherwise, the observations
were executed as planned, and no further anomalies were reported.

   1.12 Completed Two Sets of NIC/1/2/3 7456 (Water in Protoplanetary Disks)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the protoplanetary disk around star CI-Tau to search
for water in their disks.  This survey will be the first to take a detailed
look at the gas phase properties of pre-main-sequence disks at AU
distances.  The observations were completed as scheduled, and no anomalies
were reported.

   1.13 Completed NIC/1/2/3 7239 (Surface Compositions of Kuiper Belt Objects)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the Kuiper Belt object 1996TL66 in order to study its
surface composition.  The surfaces of Kuiper Belt Objects [KBO's] contain a
record of formative and dynamical processes in the outer solar system.  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 : 6

       For the acquisition at 020/2030Z, both FGS-1 and FGS-2 acquired fine
lock a total of five times, each time dropping lock a short time later.
Finally, the proposal described in 1.11 executed on gyro control only.
HSTAR 6324 was written.

                          Scheduled Reacquisitions : 11
                                        Successful : 11

   2.2 FHST Updates:

                              Scheduled : 13
                             Successful : 13

   2.3 Operations Notes:

       It was incorrectly reported in yesterday's report that the STIS
MAMA2 reset occurred while the high voltage was off.  In fact, the status
buffer message at 020/080058Z indicated that the high voltage had
anomalously been turned off.  STIS MAMA2 recovery was accomplished via ROP
NS-14 at 020/1718Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH