HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2161

PERIOD COVERED:  0000Z (UTC) 07/08/98 - 0000Z (UTC) 07/09/98

Daily Status Report as of 190/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 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.

   1.2 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 NIC/1/2 7896 (A NIR Snapshot Survey of Ultraluminous IR
Galaxies)

       The Near Infrared Camera (Cameras One and Two) was used to make
snapshot survey observations of the ultraluminous infrared galaxies
QDOTULIR06 IR9297-04 and QDOTULIR20.  Nearly all of these galaxies show
evidence for a recent tidal interaction, and we will search for evidence of
the merger progenitors near the center of each galaxy, a task made
significantly easier with NIR imaging.  The observations were completed as
planned, and no anomalies were noted.

   1.4 Completed NIC/1/2/3 7820 (The Metallicity Distribution of the
Globular Cluster Systems of Giant Elliptical Galaxies)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
study the metallicity distribution in the globular clusters contained in
the large elliptical galaxy NGC-4874.  This is an ideal use of infrared
data to significantly augment existing optical data.  The observations were
completed as scheduled, and no anomalies were reported.

   1.5 Completed NIC/1 7902 (Photometric Monitoring, Photometric Monitoring-II)

       The Near Infrared Camera (Camera One) was 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 to monitor
the photometric stability of the NICMOS cameras as a function of
wavelength.  The observations were executed as scheduled, and no anomalies
were noted.

   1.6 Completed NIC/1/2 7320 (Distribution of Forbidden Iron [Fe-II]
Emission at the Galactic Center)

       The Near Infrared Camera (Cameras One and Two) was used to make
observations of the distribution of the forbidden Iron (Fe-II) emissions
from the center of our Milky Way galaxy.  A conspicuous feature known as
the mini-cavity appears as a hole in the distribution of ionized gas within
a few arcseconds of the dynamical center of the Galaxy.  The observations
were executed as scheduled, and no anomalies were reported.

   1.7 Completed WF/PC-2/STIS/CCD/NIC/1/2/3 7307 (The Formation and
Evolution of Rich Star Clusters in the LMC)

       The WF/PC-2, Space Telescope Imaging Spectrograph (CCD), and the
Near Infrared Camera (Cameras One, Two, and Three) were used to make
observations of the rich star cluster H11 which is located within the Large
Magellanic Cloud in order to study its formation and evolution.  These
observations will help us understand the origin and evolution of rich star
clusters in our own galaxy.  The observations were completed as scheduled,
and no anomalies were reported.

   1.8 Completed STIS/CCD 7730 (Dark Matter at Very Large Radii in M-31)

       The Space Telescope Imaging Spectrograph (CCD) was used to study
Q0038+327 as its light passed through the edge of Galaxy M-31.  This is to
probe the dark matter distribution of M-31 far from the center by observing
intervening absorption from the Mg-II doublet {lambda 2800} in the spectrum
of the background QSO located in a geometrically optimal position.  A
wavelength calibration image was also taken.  As described in HSTAR 6574
and in 2.1, a reacquisition for this proposal failed and the take data flag
was down for a portion.  Otherwise, the observations were executed as
scheduled, and no further anomalies were noted.

   1.9 Completed Two 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.  As described in HSTAR 6574 and in 2.1, a
reacquisition for the second iteration of this proposal failed and the take
data flag was down for a portion.  Otherwise, the observations were
completed as planned, and no further anomalies were reported.

   1.10 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.  As described in HSTAR 6574 and in 2.1, a reacquisition for the
first iteration of this proposal failed and the take data flag was down for
a portion.  Otherwise, the observations were completed as planned, and no
further problems were reported.

   1.11 Completed NIC/1/2 7454 (The Stellar Content of Powerful Radio
Galaxies -- A NICMOS Survey of 0.8 < z < 1.8 3CR Sources)

       The Near Infrared Camera (Cameras One and Two) was used to make
survey observations of the powerful radio galaxy 3C266.  The study of
distant radio galaxies is complicated by their powerful active nucleus,
whose emission dominates at rest-frame ultraviolet wavelengths, producing
the observed peculiar, elongated morphologies; the underlying stellar
component is lost in the glare.  As described in HSTAR 6575 and in 2.1, a
reacquisition, occurring about three-and-one-half hours into this
seven-and-one-half-hour proposal, failed and the take data flag was down
for a portion.  Otherwise, the observations were completed as planned, and
no further anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 8
                                        Successful : 8

                          Scheduled Reacquisitions : 7
                                        Successful : 5

       HSTAR 6574 documents a failed reacquisition at 189/194946Z due to
the FGS-1 scan steps limit being exceeded.  The proposals described in 1.8,
1.9, and 1.10 were affected.

       HSTAR 6575 describes another failed reacquisition at 190/012948Z,
again when the FGS-1 scan steps limit was exceeded.  The proposal described
in 1.11 was affected as was an iteration of WF/PC 7712 (WF/PC-2 Cycle 7
Supplemental Darks pt2/3) which appears during the period of tomorrow's
report.

   2.2 FHST Updates:

                              Scheduled : 18
                             Successful : 18

   2.3 Operations Notes:

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

       The DF-224 SPC memory was successfully dumped to CCS strings A and B
at 190/0345Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH