HUBBLE SPACE TELESCOPE

                         DAILY REPORT #1443

PERIOD COVERED:  0000Z (UTC) 07/28/95 - 0000Z (UTC) 07/31/95

Daily Status Report as of 212/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed FGS 6151 (Masses of Pre-main Sequence Stars: Cycle 4 GO/CAL)

       The FGSs were used to make observations of the pre-main sequence
binary star DF-Tau located in the Taurus star forming region.  The FGS data
will provide the apparent orbits needed to compute the total mass of the
system.  The observations were executed as scheduled, and no anomalies were
noted. 

   1.2 Completed Six Sets of WF/PC-2 6119 (Snapshot Survey for Companions of
Planetary Nebula Nuclei)

       The WF/PC-2 was used to make snapshot survey observations of planetary
nebulae NGC-2867, IC4406, PHL932, A39, A43, NGC-5307 and NGC-6894 to study
their nuclei and to look for possible companions.  The observations were
executed as scheduled, and no anomalies were noted.

   1.3 Completed Three Sets of GHRS/2 5348 (Spectrographic Observations of
Jupiter's Aurora: Cycle 4 Medium)

   The High Resolution Spectrograph (Side Two) was used to make observations
of Jupiter's Northern Auroral region.  The purpose is to observe emission
lines of oxygen, sulfur, and H2 in the bright, quasi-permanent regions of
Jupiter's northern aurora.  A wavelength calibration image was also taken. 
The observations were executed as scheduled, and no anomalies were noted.

   1.4 Completed Three Sets of FGS 6047 (Calibrating the Mass Luminosity
Relation at the End of the Main Sequence)

       The FGS were used to make astrometric observations of stars Gl473,
GL866, GJ1215 and GL748 as part of a study to determine its mass luminosity
relationship.  The purpose is to measure the precise parallax and relative
orbit of its faint companion.  The observations were completed as planned,
and no problems were reported.

   1.5 Completed WF/PC-2 6218 (Io's Surface, Atmosphere, and Plasma Torus)

       The WF/PC-2 was used to make observations of Jupiter's moon Io's
plasma torus to study structures which might not be visible in ground based
observations.   The observations were completed as planned, and no problems
were reported.

   1.6 Completed WF/PC-2 5732 (Imaging the Hot Stellar Content of Early Type
Galaxies)

   The WF/PC-2 was used to make far ultraviolet observations of early-type
elliptical galaxy NGC-5018 to study its hot stellar contents.  The
observations were completed as planned, and no anomalies were reported. 

   1.7 Completed Three Sets of WF/PC-2 6183 (WF/PC-2 Cycle 5 Calibration:
Decon)

   The WF/PC-2 was used to make some internal flat, K-Spot, and dark
calibration images.  The purpose is to define decontamination procedures to
be run during Cycle 5.  The calibration observations were completed as
scheduled, and no anomalies were reported.

   1.8 Completed WF/PC-2 6223 (The Disks Around Young Stellar Objects)

       The WF/PC-2 was used to study the disk around the young stellar object
GM-Aur which is located in the Taurus-Auriga molecular cloud.  This disk was
detected by a radio telescope, and is comparable to the estimated size of the
solar nebula about the time of planetary formation.  The observations were
completed as planned, and no problems were reported.

   1.9 Completed FOS/BL 5182 (UV Spectroscopy of Low Redshift Active Quasars:
Cycle 4)

       The Faint Object Spectrograph (Blue Side) made ultraviolet
observations of the low redshift active quasar AKN120 to obtain the profiles
of the emission lines, and the ratios of their fluxes.  The observations were
executed as scheduled, and no anomalies were noted. 

   1.10 Completed FGS 6238 (Companion to GL6230)

       The FGSs were used to make POS and TRANS mode astrometric observations
of star GL632 (aka, Gleise 623) looking for possible companions.  Five other
reference stars were also used.  From these data the precise parallax,
barycentic orbits, and accurate masses of the star and its companion will be
determined.  The observations were completed as schedule, and no anomalies
were reported.

   1.11 Completed Two Sets of GHRS/2/1 5884 (A White Dwarf Probe of
Interstellar Deuterium)

       The High Resolution Spectrograph (Sides One and Two) was used to make
spectrographic observations of the white dwarf star HZ43 to study the local
interstellar medium (i.e., the Hydrogen to Deuterium ratio).  HZ43 is the hot
white dwarf which provides a more predictable light source for this
measurement than other late-type stars.  The observations were completed as
planned, and no problems were reported

   1.12 Completed FOC/96 5955 (Direct Measurement of Galaxy Distances)

       The Faint Object Camera (f/96) was used to make polarized light
observations of super nova SN 1980K echoes.  These data will be used for a
distance determination technique.  The observations were completed as
planned, and no problems were reported.

   1.13 Completed WF/PC-2 6221 (Small Scale Structure in Axisymmetric 
Planetary and Protoplanetary Nebula)

       The WF/PC-2 was used to make observations of the nebula MYCN18 to
study its small scale structure.  The high resolution of the WF/PC-2 will
allow discrimination of rings, knots, neutral clumps, and shells.  The
observations were completed as planned and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 30
                                        Successful : 30

                          Scheduled Reacquisitions : 20
                                        Successful : 20

   2.2 FHST Updates: 

                              Scheduled : 44
                             Successful : 44

   2.3 Operations Notes: 

       The regular montly checkout of the SAMS backup
       facility was not successful.  The command and NCC
       interface configuration did not work.  Among other
       problems: graphics pages were not current, no 
       documentation of any sort available, and the slave
       monitors could not display the SAMS MVIP slots.

       A TTR was written to document a data drop-out of 
       one and one-half minutes of non-recoverable
       engineering data at STGT.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH
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