HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1501

PERIOD COVERED:  0000Z (UTC) 10/20/95 - 0000Z (UTC) 10/23/95

Daily Status Report as of 296/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of FOS/RD 6236 (FOS Cycle 5: Location of Spectra =
and Wavelength Calibration: Red Side Detector)

       The Faint Object Spectrograph (Red Side) was used to make =
calibration observations in order to determine the location of the spectra =
and to perform a wavelength calibration.  All observations were internal.  =
A Taled calibration was also completed.  The observations were completed =
as planned, and no anomalies were reported.

   1.2 Completed Four Sets of FOS/BL 5851 (Post Asymptotic Giant Branch =
Evolution in the Magellanic Clouds)

       The Faint Object Spectrograph (Blue Side) was used to make =
ultraviolet observations of the planetary nebulae LMC-SMP29, LMC-SMP32, =
LMC-SMP32 and LMC-SMP37 which are located in the Large Magellanic Cloud.  =
Extensive ground-based and HST observations and imaging work has already =
been done on these objects.  The observations were completed as planned, =
and no problems were reported.

   1.3 Completed Two Sets of WF/PC-2 5904 (Primordial Mass Segregation and =
Main Sequence Age Spreads in Young LMC Stars)

       The WF/PC-2 was used to make observations of young clusters =
NGC-1711 and NGC-2031 which are located in the Large Magellanic Cloud to =
study the primordial mass segregation and the main sequence age spread of =
its young stars.  During the first iteration, there was a guide star =
acquisition failure.  The subsequent re-acquisition was also unsucessful.  =
No anomalies were noted for the second iteration.. 

   1.4 Completed Two Sets of FGS 6040 (Ultra-High Angular Resolution of O3 =
Stars in the Carina Nebula)

       The FGSs were used in the TRANS Mode to make ultra-high resolution =
astrometric observations of the O-3 class stars LMC-045659 and HDE269810 =
which are located in the Carina Nebula.  This is to determine if these =
objects are single stars or multiple star systems.  The observations were =
completed as scheduled, and no anomalies were reported. 

   1.5 Completed Three 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.

   1.6 Completed WF/PC-2 5972 (Determination of the Extragalactic Distance =
Scale)

       The WF/PC-2 was used to make observations of the galaxy NGC-1651 =
looking for standard candle Cepheid variable stars.  The purpose of these =
observations is to help estimate the Hubble constant with an accuracy of =
10%.  The observations were executed as scheduled, and no anomalies were =
noted.

   1.7 Completed GHRS/1 6088 (Ultraviolet Tomography of the Chromosphere =
of the K2 Dwarf in V471 Tau)

       The High Resolution Spectrograph (Side One) was used to make Rapid =
Mode ultraviolet tomographic observations of a K2 class binary dwarf star =
and its eclipsing binary white dwarf companion which are located in the =
cluster V471-Tau in order to study its chromosphere.  During this proposal =
the on-board acquisition was interrupted by a guide star loss of lock.  =
HSTAR 5336 described this occurrence.  The loss of lock further caused a =
status buffer entry, and the take data flag to remain down for a period.  =
These events were described in HSTAR 5337.  There were no other anomalies.

   1.8 Completed FOS/BL 5781 (Emission Line Variability in the Lensed =
Quasar Q0957+561: Carryover)

   The Faint Object Spectrograph (Blue Side) was used to make observations =
of the lensed quasar Q0957+561(A and B) to study its emission line =
variability.  From IUE data it was found that the flux ratio, A/B, varies =
significantly on a time scale of two weeks.  The observations were =
executed as scheduled, and no anomalies were noted.

   1.9 Completed WF/PC-2 5916 (The Oldest Globular Clusters in the Large =
Magellanic Cloud)

       The WF/PC-2 was used to make observations of the metal-poor =
globular cluster NGC-1754 which is known to be one of the oldest globular =
clusters located in the Large Magellanic Cloud.  The observations were =
completed as planned, and no anomalies were reported.

   1.10 Completed GHRS/2/1 6084 (The Rotation, Masses and Chemical =
Abundances of the White Dwarf in WZ-Sge)

       The High Resolution Spectrograph (Both Sides One and Two) were used =
in the Rapid Mode to make observations of the white dwarf star in the =
variable star system VW-Hyi in order to study its mass, rotation, and =
chemical abundances.  This dwarf novae system consists of a white dwarf, =
an accretion disk, which surrounds the white dwarf, a secondary star and a =
mass stream.  The observations were executed as scheduled, and no =
anomalies were noted.

   1.11 Competed WF/PC-2 5982 (Imaging of a Complete Sample of the Nearest =
Infrared Quasars)

       The WF/PC-2 was used to make two color observations of the nearby =
infrared quasar (IR QSO) IRAS01003.  It is believed that this IR QSO =
resulted from the merger of two gas-rich galaxies.  The observations were =
executed as planned, and no anomalies were reported.

   1.12 Completed FGS 6241 (Companion to W922 (GL831))

       The FGSs were used in both the POS and TRANS Mode to make =
astrometric observations of star W922 (aka, Gleise 831) to measure its =
parallax and looking for possible companions.  Several other reference =
stars were also observed.  The observations were completed as planned, and =
no problems were reported.

   1.13 Completed WF/P-2 6254 (GTO Pure Parallel Program - Cycle 5)

       The WF/PC-2 was use to make random long exposures of high galactic =
fields taken in parallel with the prime science observations to obtain a =
random sample of galaxies.  The observations were executed as scheduled, =
and no anomalies were noted.

   1.14 Completed GHRS/2 5869 (Chromospheric Activity in Quiet stars: Halo =
Subdwarfs)

       The High Resolution Spectrograph (Side Two) was used to make =
spectrographic observations of the quiet star HD194598 to study its =
chromospheric activity.  This is a search for Mg II emission in low =
metallicity solar temperature field stars in the galactic halo.  The =
observations were completed as planned, and no problems were reported.

   1.15 Completed GHRS/2 6085 (The Nature of the Canum Venaticorum =
Variables)

       The High Resolution Spectrograph (Side Two) was used to make =
spectrographic observations of the Canus Venaticorium class star AM-Cvn =
which is an interacting binary star.  The observers hope to answer many =
questions about this enigmatic object from these data.  The observations =
were executed as scheduled, and no anomalies were reported.

   1.16 Completed WF/PC-2 5897 (Ages For the Oldest Star Clusters in the =
Large Magellanic Cloud)

       The WF/PC-2 was used to make observations of star cluster NGC-1466 =
which is known to be one of the oldest clusters in the Large Magellanic =
Cloud.  From these data a color magnitude diagram will be constructed that =
extends below the main sequence turnoff.  The observations were completed =
as planned, and no anomalies were noted.

   1.17 Completed GHRS/2 5724 (Absorption Cloud Physics in Seyfert Galaxy =
Nuclei)

       The High Resolution Spectrograph (Side Two) was used to make =
observations of Seyfert Galaxy NGC-3516 to study absorption cloud physics =
in the nuclear region.  A wavelength calibration observations was also =
taken.  The observations were executed as scheduled, and no anomalies were =
noted.

   1.18 Completed WF/PC-2 5957 (Snapshot of 3CR Radio Galaxies)

       The WF/PC-2 was used to make observations for radio galaxy 3C83.1 =
to study the morphology of the radio galaxy.  The observations were =
executed as scheduled, and no anomalies were noted.

1.19 Completed 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 nebula NGC-6058 to study its nuclei and to look for possible =
companions.  The observations were executed as scheduled, and no anomalies =
were noted.

   1.20 Completed WF/PC-2 5992 (The Host Galaxies and Environments of BL =
Lacertae Objects)

       The WF/PC-2 was used to make short and deep observations of the BL =
Lacertae class object MS1407+595.  The short exposures will allow study of =
the inner regions of the host galaxy.  The longer exposures will allow a =
search for faint galaxy companions and any interaction between the faint =
companion and the AGN.  The observations were executed as scheduled, and =
no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 23
                                        Successful : 22

       At 293/131045Z, there was a loss of lock that affected
       the GHRS 6088 proposal (see 1.7 above).  HSTAR 5336
       described the loss of lock.

       At 293/192843Z, there was a guide star acquisition 
       failure.  HSTAR 5338 was written.  (see reacquisitions
       below).

                          Scheduled Reacquisitions : 20
                                        Successful : 19

       HSTAR 5338 also described, the reacquisition failure
       at 293/205953Z.  An attitude reference update was made 
       at 293/2332Z to correct the problem.

   2.2 FHST Updates: 

                              Scheduled : 37
                             Successful : 37

   2.3 Operations Notes: 

       At 294/080908Z, there was a 6-minute, 55-second loss of realtime =
engineering data due to a failure at STGT.  On day 295, there were several =
data inversions during STGT operations.  TTRs were written for these =
events.

       Early Monday morning, the DMS Flight Controllers and the DOC =
Operators carefully combined efforts to save all WFPC data for an =
observation, despite several tape recorder overflow messages (produced by =
the PASS ground software) and the unavailability of additional TDRSS =
services due to the on-going shuttle mission.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH
                     -END-