HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2121

PERIOD COVERED:  0000Z (UTC) 05/11/98 - 0000Z (UTC) 05/12/98

Daily Status Report as of 132/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed NIC/2 7330 (The Fueling of Active Nucleii: A NICMOS
Snapshot Survey)

       The Near Infrared Camera (Camera Two) was to be used to probe the
dark matter distribution of NGC-7212 far from the center by observing
intervening absorption from the MgII doublet (lambda 2800) in the spectrum
of one background QSO located in a geometrically optimal position.  HST
observations are required because this feature is in a wavelength range not
accessible from the ground, and the QSO magnitudes and expected strength of
absorption make IUE observations unfeasible.  This proposal was not
executed due to NICMOS being in the suspend state.

         1.2 Completed Three 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 STIS/MA2 7647 (STIS NUV-MAMA Cycle 7 Flats)

       The Space Telescope Imaging Spectrograph (MA2) was used to make
near-ultraviolet (NUV) flat calibration images.  This program will obtain
NUV-MAMA flat-field observations with the D2 lamp for the construction of
on-orbit D-flats for G230M.  A dark calibration image was also taken.  The
observations were executed as scheduled, and no anomalies were noted.

   1.4 Completed NIC/1/2/3 7902 (Photometric Monitoring, Photometric
Monitoring-II)

       The Near Infrared Camera (Cameras One, Two and Three) was to be used
to make observations of absolute standard, solar analog star P330E-Cal as
part of a photometric monitoring program.  Observations were made at
several different wavelengths spanning the NICMOS wavelength range in each
camera NIC/1, NIC/2, and NIC/3 to monitor the photometric stability of the
NICMOS cameras as a function of wavelength.  This proposal was not executed
due to NICMOS being in the suspend state.

   1.5 Completed Two Sets of WF/PC-2 7625 (WF/PC-2 Cycle 7 Earth Flats)

       The WF/PC-2 was used to make a series of Earth flat calibration
images.  These flat fields will allow mapping of the OTA illumination
pattern and will be used in conjunction with previous internal and external
flats to generate new pipeline superflats.  The observations were completed
as planned, and no anomalies were reported.

   1.6 Completed STIS/CCD 7645 (STIS FUV-MAMA Cycle 7 Flats)

       The Space Telescope Imaging Spaectrograph (CCD) was used to make
far-ultraviolet flat calibration images.   This program will obtain
FUV-MAMA flat-field observations with the Kr lamp for the construction of
on-orbit D-flats for G140M.  A dark calibration image was also taken.  The
observations were completed as planned, and no anomalies were reported.

   1.7 Completed Four 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.

   1.8 Completed NIC/1 7867 (NICMOS Imaging of the Dusty CfA Seyfert Nuclei)

       The Near Infrared Camera (Camera One) was to be used to make
observations of the Seyfert Galaxy NGC-4388.  These data will allow us to
determine if the Seyfert Type 1/2 dichotomy is best explained by the
unified model, the evolutionary picture, or a combination of both of these
scenarios.  This proposal was not executed due to NICMOS being in the
suspend state.

   1.9 Completed STIS/CCD 7803 (Daily Darks to Update Acquisition Bad Pixel
Table Part III)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
daily dark calibration updates.  These daily 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 completed as planned, and no anomalies were reported.

   1.10 Completed STIS/CCD 7438 (Spatially-Resolved Spectroscopy of the UVX
in Elliptical Galaxies)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
spatially resolved far-ultraviolet observations of the large elliptical
galaxy NGC-3115.  The prominent far-UV upturn {UVX} in the spectra of
elliptical galaxies originates from stars in their old populations which
have evolved beyond the He-flash at the tip of the red giant branch.  The
observations were completed as scheduled, and no anomalies were reported.

   1.11 Completed NIC/2/3 7907 (NICMOS Pure Parallel Winter 97-98)

       The Near Infrared Camera (Cameras Two and Three) was to be used to
make pure parallel spectrographic observations of sky regions when another
instrument is prime.  This proposal was not executed due to NICMOS being in
the suspend state.

   1.12 Completed STIS/CCD 7926 (CCD Dark and Bias Monitor -- Continued)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
several dark and bias calibration observations.  This is 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.  These observations will also 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.

   1.13 Completed NIC/2 7877 (Infrared Luminous Stars & Stellar Population
in Nearby Giant Elliptical Galaxies)

       The Near Infrared Camera (Camera Two) was to be used to make
observations of infrared luminous stars in the nearby giant elliptical
galaxy NGC-5128.  These data will yield the first infrared luminosity
functions for the stellar populations of giant ellipticals as well as
unique optical/infrared color-magnitude diagrams for individually resolved
stars.  This proposal was not executed due to NICMOS being in the suspend
state.

   1.14 Completed Three 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.

   1.15 Completed Two Sets of STIS/CCD 7908 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was to be used to
make calibration observations as part of the POMS Test Proposal.  This was
a STIS non-scripted parallel proposal.  This proposal was not executed due
to NICMOS being in the suspend state.

   1.16 Completed NIC/1/2/3 7857 (Investigating the Missing Link Between
Disks Around Pre-Main Sequence and Main Sequence Stars)

       The Near Infrared Camera (Cameras One, Two and Three) was to be used
to make observations of stars HD100546 and HD106797.  Various observations
and models of the circumstellar disk around the Main Sequence IR excess
star Beta Pictors tend to show that the optically thin dust disk is the
result of destruction processes among planetesimals.  This proposal was not
executed due to NICMOS being in the suspend state.

   1.17 Completed STIS/CCD 7911 (STIS Galactic Plane Pure Parallel Program)

       The Space Telescope Imaging Spectrograph (CCD) was used to make low
galactic latitude survey observations in parallel with the prime science
observations.  Short exposures with the 50CCD imaging mode will provide the
wavelength zero-point calibration.  These data will be placed immediately
into the Hubble Data Archive.  The observations were executed as scheduled,
and no anomalies were noted.

   1.18 Completed NIC/1/2/3 7844 (H-2 Observations of the Galactic Center
Circumnuclear Ring)

       The Near Infrared Camera (Cameras One, Two and Three) was to be used
to make observations of the galactic center circumnuclear ring.  These data
will be used the distribution of molecular hydrogen in the circumnuclear
ring that engulfs the inner two parsecs of the galaxy.  This proposal was
not executed due to NICMOS being in the suspend state.

   1.19 Completed STIS/MA1/MA2 7604 (Cycle 7 MAMA Dark Measurements)

       The Space Telescope Imaging Spectrograph (MA1 and 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.

   1.20 Completed WF/PC-2 7470 (A Snapshot Survey of Galactic Globular
Clusters)

       The WF/PC-2 was used to make snap shot survey observations of the
crowded center of the galactic globular cluster NGC-6342.  The resulting
color-magnitude diagram will include all stars down to about one magnitude
below the main-sequence turnoff.  The observations were completed as
scheduled, and no problems were reported.

   1.21 Completed NIC/2 7862 (A Search for Near Infrared H-2 Emission in
Active Elliptical Galaxies)

       The Near Infrared Camera (Camera Two) was used to make observations
of active elliptical radio galaxy 3C264 to search for infrared H-2 region
emissions.  The observations were completed as scheduled, and no anomalies
were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 8
                                        Successful : 8

                          Scheduled Reacquisitions : 8
                                        Successful : 8

   2.2 FHST Updates:

                              Scheduled : 13
                             Successful : 13

   2.3 Operations Notes:

       Using ROP SR-1, the SSR correctable EDAC counts were cleared four times.

       Per operations request (OR) 13751, NICMOS was recovered from suspend
to operate at 131/205517Z.  By the same OR, the PAM was moved to its home
position, the buffer box temperature low limits were patched, and memory
monitors were restored by 131/2146Z.  The proposals described in 1.1, 1.4,
1.8, 1.11, 1.13, 1.16, and 1.18 were affected by the suspend.  NICMOS was
recovered just before the proposal described in 1.21.  That proposal
operated nominally.

       Per ROP RD-7, ESTR-2 was re-conditioned at 132/0512Z and ESTR-3 was
re-conditioned at 132/0941Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH