HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1713

PERIOD COVERED:  0000Z (UTC) 09/06/96 - 0000Z (UTC) 09/09/96

Daily Status Report as of 253/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 6354 (Measuring Luminosity Evolution in Z =3D =
0.3 Field Galaxies)

       The WF/PC-2 was used to make snapshot observations of the galactic =
cluster Gal-Cluster-0 located at a distance of Z =3D 0.3.  The targets =
were drawn from a much larger pool of galaxies for which the internal =
kinematics have been measured from an extensive ground based program.  =
The observations were executed as scheduled, and no anomalies were noted.

   1.2 Completed Two Sets of WF/PC-2 6756 (Measuring Proper Motions of =
Galactic Microlenses)

       The WF/PC-2 was used to make astrometric proper motion =
measurements of STAR-1803 and STAR-1807 as part of a study of galactic =
microlensing.  The observations were completed as scheduled, and no =
problems were reported. 

   1.3 Completed GHRS/1 7208 (Spectroscopic Imaging of the Jovian Aurora)

       The High Resolution Spectrograph (Side One) was used to make =
emission spectrographic observations of Jupiter's Auroral region.  A =
wavelength calibration image was also taken.  Of primary interest is the =
spectral profile of the Lyman Alpha line, which may be used to determine =
the run of temperatures in the auroral atmosphere and the propoerties of =
the precipitating particles.  The observations were executed as =
scheduled, and no anomalies were noted.

   1.4 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 QDOTULIR16.  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.

   1.5 Completed GHRS/1 6800 (Dueterium in the Interstellar Medium Tword =
Hot Stars)

       The High Resolution Spectrograph (Side One) was used to make =
spectrographic absorption observations of the interstellar medium (ISM) =
along the line-of-sight toward the hot star HD48915.  A wavelength =
calibration observation was also taken.  The deuterium abundance in the =
local ISM toward Sirius A and B will be measured.  The observations were =
completed as scheduled, and no problems were reported. 

   1.6 Completed Two Sets of GHRS/1 6463 (The Origin of the Peculiar =
Hybrid PG 1159 Stars)

       The High Resolution Spectrograph (Side One) was used to make =
observations of NGC-70 and an Abell Cluster in order to study the origin =
of the peculiar hybrid PG-1159 Class of stars.  The data will be used to =
obtain an improved value of the effective temperature, and the spectra =
*^ll be compared to the latest model atmospheres to learn more about the =
evolution of  PG 1159 stars.  The observations were completed as =
scheduled, and no problems were noted. 

   1.7 Completed 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.

   1.8 Completed WF/PC-2/GHRS/1 6743 (HST Far UV Imaging and Spectra of =
Jupiter's Aurora)

       The WF/PC-2 and the High Resolution Spectrograph (Side One) were =
both used to make observations of the auroral zones  high latitude zones, =
and elliptical belt ovals on the planet Jupiter. A wavelength calibration =
image was alaso taken.  The observations were executed as scheduled, and =
no anomalies were noted. 

   1.9 Completed Two Sets of GHRS/2 6644 (Boron Isotope Ratios in Early B =
Stars From B III)

       The High Resolution Spectrograph (Side Two) was used to make =
observations of the early, B class stars HD886 and HD35299 in order to =
measure the ration of Boron isatopes from studing the B III spectral =
lines.  During the first iteration of this proposal, there was a loss of =
lock, and the take data flag went down for two minutes, 16 seconds.  =
HSTAR 5702 was written.  The exact effect on science is not currently =
known.  Otherwise, the observations were completed as scheduled, and no =
further anomlies were noted. 

   1.10 Completed Two Sets of WF/PC-2 6363 (The Environments and Host =
Galaxies of BL-Lac Objects)

       The WF/PC-2 was used to make snapshot survey observations of =
BL-Lac objects 1ES0647+25 and PG1553+113 in order to study their =
environment and their host galaxies.  The goal is to investigate =
systematic trends in host galaxy type, unusual morphological features, =
nearby companion galaxies, etc.  The observations were executed as =
scheduled, and no anomalies were noted.

   1.11 Completed WF/PC-2 6348 (Blue Continuum Snapshots of 3CR Radio =
Galaxies)

       The WF/PC-2 was used to make some snapshot images of the blue =
continuum in radio galaxy 3C244.1.  Combined with existing data, these =
exposures will provide high spatial resolution information on the color =
distribution within galaxies, redding due to dust, spacial indices of the =
optical synchrotron jets, and colors of the active nuclei and tidal jets. =
 The observations were executed as scheduled, and no anomalies were =
noted.

   1.12 Completed WF/PC-2 6902 (WF/PC-2 Cycle 6 Photometric Calibration =
Monitor UV/OPT STD)

       The WF/PC-2 was used to make both ultraviolet and optical =
photometric observations of the standard star GRW+70D582 as part of a =
Cycle 6 calibration procedure.  This observations was done immediately =
before and after decontamination procedures.  The observations were =
completed as planned, and no problems were reported. 

1.13 Completed GHRS/1/2 6594 (White Dwarf Companions of Barium and CH =
Peculiar Stars)

       The High Resolution Spectrograph (Sides One and Two ) was used to =
attempt to make spectrographic observations of the white dwarf of the =
Barium and CH Peculiar class star HD133208.  This will test the theory =
that abundance anomalies in this star caused by mass transfer from the =
precursor of the white dwarf.  The observations were executed as =
scheduled, and no anomalies were noted.

   1.14 Completed FOS/BL and GHRS/2 6612 (Damped Lyman-Alpha Absorption =
Lines From Moderate Redshifted Galaxies)

       The Faint Object Spectrograph (Blue Side) and the High Resolution =
Spectrograph (Side Two) were used to make observations of the moderate =
redshifted galaxy/QSO 3C95 in order to study the damped Lyman-Alpha absorp=
tion lines which are located in the line of sight to the object.  In =
addition, the neutral H column density will be determined.  During the =
latter portion of this proposal, while the GHRS was being operated, there =
were at least two losses of lock, resulting in the loss of most, if not =
all, of the GHRS data.  HSTAR 5704 was written.  Otherwise the FOS =
observations were completed as planned, and no further problems were =
reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 24
                                        Successful : 24

                          Scheduled Reacquisitions : 22
                                        Successful : 22

   2.2 FHST Updates: 

                              Scheduled : 48
                             Successful : 48

       As detailed in Sections 1.9 and 1.14 there were two periods of =
loss of lock at 251/221923Z and 252/233309Z.  HSTARs 5702 and 5704 were =
written.

   2.3 Operations Notes: 

       There were no significant operational problems reported.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH