HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1785

PERIOD COVERED:  0000Z (UTC) 12/23/96 - 0000Z (UTC) 12/27/96

Daily Status Report as of 362/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Five Sets of WF/PC-2 6904 (WF/PC-2 Cycle 6 Cal.:Darks)

       The WF/PC-2 was used to make a series of several dark calibration =
images as part of a standard calibration within Cycle 6.  This =
calibration procedure is performed once per week as part of an on going =
CCD calibration to be used to monitor and characterize hot pixels.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.2 Completed FOS/RD 6203 (FOS Cycle 5: Photometric Calibration)

       The Faint Object Spectrograph (Red Side) was used to make =
observations of standard star BD+28D4211 in order to perform an absolute =
sensitivity photometric calibration of the instrument.  The observations =
were executed as scheduled, and no anomalies were noted.

   1.3 Completed Four Sets of WF/PC-2 7202 (The WF/PC-2 B Band Parallel =
Survey: A Systematic and Synoptic Study of Galaxy Formation and Evolution =
- Short Orbit Case)

       The WF/PC-2 was used to make observations as part of a B-Band =
Survey to make synoptic study of galaxy formation and evolution.  These =
observations were taken in parallel with the prime science observations. =
They were completed as planned, and no anomalies were reported.

   1.4 Completed WF/PC-2 6905 (WF/PC-2 Cycle 6 Calibration: Internal =
Monitor)

       The WF/PC-2 was used to make several internal calibrations =
observations including biases and internal flats as part of a Cycle 6 =
calibrations procedure.  A variety of internal exposures are run weekly =
to verify and monitor the health of the camera. The observations were =
executed as scheduled, and no anomalies were noted.

   1.5 Completed FGS 7210 (Transfer Scan Check)

       The FGS were used to make astrometric observations of star HD65896 =
in order to execute a transfer scan check.  These observations will be =
used to determine the possible multiplicity of three SMOV target =
candidates.  The observations were executed as scheduled, and no =
anomalies were noted. 

   1.6 Completed Ten Sets of WF/PC-2 6253 (Pure Parallel Archive Program)

       The WF/PC-2 was used to execute a pure parallel program taking =
ultraviolet observations running concurrently with prime science =
observations.  The intent is to search for extra-galactic sources with =
flux excesses at 3000 A0 and galactic sources with excesses at 1600 A0.  =
The observations were completed as planned,  and no problems were =
reported.

   1.7 Completed FOS/BL 6799 (The BAL Region Covering Factor in a Sample =
of IRAS-Selected QSOs)

       The Faint Object Spectrograph (Blue Side) was used to make =
spectrographic observations of QSO PKS0420-01 in order to determine the =
criteria by which the presence of BALs in the spectra may be predicted.  =
The observations were completed as planned, and no problems were =
reported. 

   1.8 Completed WF/PC-2 6359 (Core Properties of the Bulges of Spiral =
Galaxies)

       The WF/PC-2 was used to make snapshot survey observations of =
spiral galaxys ESO482G17 in order to study its central bulge.  The aim is =
to investigate the core properties, correlation's with global galactic =
properties, and the frequency of occurrence of multiple and/or =
miscentered nuclei.  The observations were completed as scheduled, and no =
anomalies were noted.

   1.9 Completed GHRS/1 6828 (Far UV Emission Spectrum and Stellar Winds =
of Sirius A and Vega)

       The High Resolution Spectrograph (Side One) was used to make far =
ultraviolet observations of the star Vega (aka, HD172167).  The proposal =
text indicated the the Cycle #1 spectra reviealed unexpected presence of =
emission lines and a slight stellar wind.  The observations were executed =
as scheduled, and no anomalies were noted. 

   1.10 Completed FOS/BL/GHRS/1 6918 (FOS Cycle 6: Internal/External =
Offset)

       The Faint Object Spectrograph (Blue Side) and the High Resolution =
Spectrograph (Side One) were both used to make observations of standard =
cluster NGC-6833 in order to make internal and external calibration =
measurements.  Offsets between internal and external wavelength scales =
were measured for several different gratings.  The observations were =
executed as scheduled, and no anomalies were noted. 

   1.11 Completed FOS/RD 6577 (An Expanded Survey for Study of the =
Lyman-Alpha Line and QSO Mg II Absorption)

       The Faint Object Spectrograph (Red side) was used to make =
observations of the QSO PKS0952+17 in order to make a survey of the =
Lyman-Alpha line and the 68 Mg II absorption line system.  The =
observations were completed as scheduled, and no problems were reported. 

   1.12 Completed WF/PC-2 6909 (WF/PC-2 Cycle 6 Calibration: Earth Flats)

       The WF/PC-2 was used to make observations of the bright earth to =
obtain streak flats which are used to construct high quality flat fields =
for the WF/PC-2 filter set.  The observations were executed as scheduled, =
and no anomalies were noted.

   1.13 Completed WF/PC-2 6346 (Snapshot Survey of the Ultraluminous IRAS =
Galaxy Sample-Part 1 High)

       The WF/PC-2 was used to make snapshot survey observations of the =
ultraluminous IRAS galaxy QDOTULIR06.  These data will be searched for =
multiple cores, which imply a merger has occurred, and for starburst =
regions.  The observations were executed as scheduled, and no anomalies =
were noted.

   1.14 Completed GHRS/1 5757 (Dayglow Emission Line Profile From the =
Outer Planets: Cycle 4  Med. Part 2 of 5414)

       The High Resolution Spectrograph (Side One) was used to make =
emission line spectrographic observations of the dayglow on the planet =
Saturn.  Recent IUE observations of the Lyman-Alpha emission profile from =
Jupiter's dayglow and aurora reveal a substantial line  broading, implying=
 that the observed high brightness is due to  resonant scattering of =
solar emission with broad line rather than charged particle excitation.  =
A wavelength calibration image was also taken.  The observations were =
executed as scheduled, and no anomlaies were noted.

   1.15 Completed FOS/BL 6498 (Accretion Streams in Magnetic Variables: =
FOS Eclipse of 4 Rosa)

       The Faint Object Spectrograph ( Blue side) was used to make Rapid =
Mode spectrographic observations of the accretion streams in the magnetic =
variable star (i.e., Cataclysmic variable) RXJ0929-1  (aka, 4 Rosa). This =
is a binary system, and it contains a white dwarf star, an accretion =
disk, a mass stream, and hot spot where the mass stream hits the disk and =
a companion star. The observations were completed as planned and no =
anomalies were reported.

   1.16 Completed FOS/RD 6819 (FOS Observations of 
Close QSO Pairs)

       The Faint Object Spectrograph (Red Side) was used to make =
ultraviolet spectrographic observations of the close pair QSO Q1026-0045 =
which has a projected liniar sepetration of 400 KPC.  The observations =
were completed as planned, and no problems were reported. 

   1.17 Completed FOS/RD 6704 (Dust in the Broad-Lined Regions of Seyfert =
Galaxies)

       The Faint Object Spectrograph (Red Side) was used to make =
observations of the Seyfert galaxy MRK728 in order to study dust in its =
broad-line Balmer regions and weak nonstellar continuum.  Its =
characteristics may be caused by dust in the line of sight, or low =
optical depth and low ionization parameter in the Broad Line Region.  The =
observations were completed as planned, and no problems were reported.

   1.18 Completed FOS/RD 6916 (FOS/Cycle 6:Photometric Calibration)

       The Faint Object Spectrograph (Red Side) was used to make =
ultraviolet photometric calibration images of standard star BD+28D4211 =
using the 4.3 arcsecond aperture.  The observations were completed as =
planned, and no problems were reported. 

   1.19 Completed FOS/BL 6682 (Geometry and Generalizability of the Reflec=
ted Light Model for Seyfert Galaxies)

       The Faint Object Spectrograph (Blue side) was used to make =
spectropolarimetry observations of the Seyfert (class 2) galaxy MRK348 in =
order to study its geometry and the generalizablity of its reflected light=
 model.  The goal is to determine if the polarization components of all =
Seyfert class two galaxies have Seyfert class one characteristics.  The =
observations were completed as scheduled, and no problems were reported. 

   1.20 Completed FGS 6641 (Continuation of Mass Ratio Determination for =
Double Stars)

       The Fine Guidance Sensors were used in both the POS and TRANS =
modes to make astrometric observations of the double star L722-22 in =
order to determine the mass ratio of its two components.  This binary =
system contains either a low-mass star or a brown dwarf.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.21 Completed FOS/BL 6539 (Ultraviolet Spectroscope of Seyfert 2 =
Nuclei)

       The Faint Object Spectrograph (Side Two) was used to make =
ultraviolet spectrographic observations of nucleus of the Seyfert class =
two galaxy IC3639.  The objective is to determine whether or not the =
featureless continuum is produced by hot massive stars in a circumnuclear =
starburst region.  A wavelength calibration image was also taken.  The =
observations were completed as planned, and no problems were reported. 

   1.22 Completed FOC/48 6198 (Cycle 5 F/48 Longslit Spectrophotometric =
Calibration)

       The Faint Object Camera (f/48) was used to make observations of =
the standard star LDS749B in order to perform a longslit =
spectrophotometric calibration.  Observations were also taken with the =
star at different positions on the longslit.  This will allow some =
measurement of the spatial dependence of the sensitivity, and allow =
tracing the distortion pattern at the different positions on the slit.  A =
dark and internal flat calibration images were also taken.  The =
observations were completed as scheduled, and no anomalies were reported. =


1.23 Completed Two sets of WF/PC-2 7203 (Cosmology with the Medium Deep =
Survey - Short Orbit Cases)

       The WF/PC-2 was used to take short (about 20 minute) exposures, to =
be taken in parallel with the prime science observations, using the I =
filter.  These exposures are part of the medium-deep survey, which =
emphasizes exposures that will be useful in obtaining cosmological =
parameters.  The observations were completed as planned, and no problems =
were reported.

   1.24 Completed FOS/BL 6913 (FOS Cycle 6: Location of Spectra and =
Wavelength Calibration)

       The Faint Object Spectrograph (Blue Side) was used to make a =
series of stability calibration measurements of the wavelength location =
and the location of the spectra.  All the observations were internals.  Th=
e observations were completed as planned, and no problems were reported.

   1.25 Completed GHRS/2 6593 (Origin and Physical Conditions in the =
Local Lyman-Alpha Forest)

       The High Resolution Spectrograph (Side Two) was used to make high =
resolution spectral observations of active galactic nuclei of AKN120 in =
order to study the origin and physical conditions of the local =
Lyman-Alpha forest cloud which lies in the foreground of the quasar.  The =
study of these data should provide a better understanding of the origin =
and physical conditions in this cloud and its relationship, if any, to =
near by galaxies.  The observations were completed as planned and no =
anomalies were reported.

   1.26 Completed WF/PC-2 5999 (The Nuclear Structure of S0 Galaxies: A =
PC Imaging Survey)

       The WF/PC-2 was used to make observations of S0 class galaxy =
NGC-1201 in order to study its nuclear structure.  This is a part of a =
large survey of S0, E/S0, and S0/a class galaxies.  The targets will =
cover a wide range in luminosity and environment.  The observations were =
completed as planned, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 25
                                        Successful : 25

                          Scheduled Reacquisitions : 40
                                        Successful : 40

   2.2 FHST Updates: 

                              Scheduled : 39
                             Successful : 39

   2.3 Operations Notes: 

       It was a very quite time on the HST Project over the Christmas =
holiday from Dec. 23 through Dec. 27. Operations were nominal and no =
problems were reported.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

An HST Daily Report will be submitted on Monday, Dec. 30   We will return =
to our normal reporting schedule on Friday, Jan. 3.

/DMH