HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2164

PERIOD COVERED:  0000Z (UTC) 07/13/98 - 0000Z (UTC) 07/14/98

Daily Status Report as of 195/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed NIC/2 7227 (A Search for Low Mass/Sub-Luminous Companions
to M-Stars)

       The Near Infrared Camera (Camera Two) was used to make a search for
low mass/sub-luminous companions to low mass M class stars.  Knowledge of
stellar and sub-stellar masses and luminosities at and below the ~0.08
M{sun} H-burning limit is of fundamental importance.  A dark calibration
image was also taken.  The observations were completed as planned, and no
problems were reported.

   1.2 Completed Two Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental
Darks pt2/3)

       The WF/PC-2 was used to make a series of Cycle 7 supplemental
calibration darks.  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 executed as scheduled, and no
anomalies were noted.

   1.3 Completed NIC/2 7894 (Completing A Near-Infrared Search for Very Low
Mass Companions to Stars within 10 pc)

       The Near Infrared Camera (Camera Two) was used to make observations
searching for very low mass (VLM) companions to the star HD149661.  This
search will be the largest, most sensitive, volume-limited search for VLM
companions ever undertaken.  The observations were completed as planned,
and no anomalies were reported.

   1.4 Completed NIC/1/2/3 7868 (Near-IR Cores of Radio Galaxies, Are the
AGN's Moving in the Galaxy?)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the core region of radio galaxy M-84.  Near-IR colors
maps will determine the location of dense gas responsible for the
obscuration and fueling of the AGNs.  The observations were completed as
scheduled, and no problems were reported.

   1.5 Completed Four Sets of 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.

   1.6 Completed Six 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.

   1.7 Completed STIS/CCD 7951 (Anomalous Scatter Calibration)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard star HD11067 without the use of an occulting bar
in a long slit to make an anomalous scatter calibration observations.  A
wavelength calibration was also taken.  The observations were executed as
scheduled, and no anomalies were noted.

   1.8 Completed Twelve Sets of NIC/2/3 7907 (NICMOS Pure Parallel Winter
97-98)

       The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel spectrographic observations of sky regions when another
instrument is prime.  The observations were completed as planned, and no
anomalies were reported.

   1.9 Completed FOC/96 6618 (A Hidden Power Source in the QSO PG 1630+377)

       The Faint Object Camera (f/96) was used to make observations of
quasar PG1630+337 in order to study its hidden power source.  For this
hidden source to be so bright as seen only through scattering indicates
that it may be intrinsically the most significant power source shortward of
the Lyman edge.  An internal flat calibration image was also taken.  The
observations were executed as scheduled, and no anomalies were noted

   1.10 Completed STIS/CCD 8064 (POMS Test Proposal: STIS Non-Scripted
Parallel Proposal - Backup)

       The Space Telescope Imaging Spectrograph (CCD) was used to conduct a
non-scripted parallel POMS test.  The observations were completed as
scheduled, and no problems were reported.

   1.11 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.

   1.12 Completed STIS/CCD/MA1 7288 (High Resolution Ultraviolet
Spectroscopy of Hercules X-1/HZ Herculis)

       The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
make ultraviolet spectrographic observations of the X-ray binary pulsar
4U1656+35 (a.k.a., Hercules X-1/HZ Herculis).  A wave length calibration
observations was also taken.  The observations were executed as scheduled,
and no anomalies were noted.

   1.13 Completed STIS/CCD 7908 (POMS Test Proposal: STIS Non-Scripted
Parallel Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations as part of the POMS Test Proposal.  This was a
STIS non-scripted parallel proposal.  The observations were completed as
planned, and no problems were reported.

   1.14 Completed NIC/1 7225 (Proper Motion of Stars Near SGR-A*)

       The Near Infrared Camera (Camera One) was to be used to make
astrometric proper motion observations of stars in the vicinity of
Sagittarius-A (a.k.a., NGC-4147).  Sgr-A may be a black hole with a mass
close to a million solar masses.  As described in 2.1 and HSTAR 6584, the
guide star acquisition for this proposal failed when the search radius
limit was exceeded on FGS-2.  This immediately followed the full maneuver
update failures described in 2.1 and in HSTAR 6583.  Four observations were
affected when the take data flag remained down.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 7
                                        Successful : 6

       HSTAR 6584 describes a guide star acquisition failure at 194/232222Z
that occurred when the search radius limit was exceeded on FGS-2,
immeediately following an FHST full maneuver update failure (HSTAR 6583).
The proposal described in 1.14 was affected, as were an iteration of
WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental Darks pt2/3) and STIS/CCD 7948
(CCD Dark and Bias Monitor -- Cont. to Dec. 98) which appear during the
interval of tomorrow's report.

                          Scheduled Reacquisitions : 10
                                        Successful : 10

   2.2 FHST Updates:

                              Scheduled : 10
                             Successful : 9

       HSTAR 6583 documents FHST full maneuver updates which failed at
194/225957Z and at 194/230117Z following type T2 slews.  These events
immediately preceeded the acquisition failure described in 2.1.

   2.3 Operations Notes:

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

       Following the acquisition failure (see 2.1), an attitude reference
update was uplinked at 195/0044Z.

       At 195/0339Z, all six ephermeris table were uplinked.

       A DF-224 SPC dump to CCS string A was successfully performed at
195/0516Z

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH