HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1787

PERIOD COVERED:  0000Z (UTC) 12/30/96 - 0000Z (UTC) 01/03/97

Daily Status Report as of 003/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of WF/PC-2 6361 (High Resolution Imaging of =
X-Ray Selected AGNs)

       The WF/PC-2 was used to make high resolution  observations of the =
known low, red-shifted x-ray active galactic nuclei (AGN) MS1200.0-0 and =
MS2210.2+1.  These data will allow a study of the optical properties of =
an unbiased sample of AGN host galaxies.  The observations were completed =
as scheduled, and no problems were reported.

   1.2 Completed S/C 5582 (FOC/48 Monthly Activation (Camera Section =
Only): Cycle 4) 

        This proposal was executed as scheduled, and no anomalies were =
noted. 

   1.3 Completed WF/PC-2 6904 (WF/PC-2 Cycle 6 Cal.:Darks)

       The WF/PC-2 was used to make a series of 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.

   1.4 Completed WF/PC-2 6741 (Synoptic Monitoring of Seasonal Phenomena =
on Mars)

       The WF/PC-2 was used to make observations of the surface and =
meteorological changes on the planet Mars in order to do synoptic =
monitoring of its seasonal phenomena.  Special attention will be given to =
the Ares Valley region, which is intended as a landing site for the Mars =
Pathfinder mission.  The observations were completed as planned, and no =
problems were reported.

   1.5 Completed FOS/RD 6910 (FOS Cycle 6: Focus, X-Pitch, and Y-Pitch)

       The Faint Object Spectrograph (Red Side) was used to make focus =
calibration observations of the X and Y pitch values to test the system's =
focus.  This will allow for optimal focus determination of the =
spectrograph.  A wavelength calibration image was also taken.  The observa=
tions were executed as scheduled, and no anomalies were noted.

   1.6 Completed Two Sets of 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 galaxies 3C172.0 and 3C175.0.  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.  A wavelength calibration image was also taken.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.7 Completed WF/PC-2 6125 (Imaging and Spectroscopy of SN 1885 in =
M-31)

       The WF/PC-2 was used to make observations of Super Nova SN 1885 =
(aka, S Andromeda) which is located in M-31 (aka, NGC-224, the Andromeda =
Galaxy).  The subsequent plan is to have the Faint Object Spectrograph =
obtain spectra of both the supernova remnant (SNR) and the bulge of M-31. =
 The observations were completed as planned, and no anomalies were noted.

   1.8 Completed Eight 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.

   1.9 Completed 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 object S4-1823+56 in order to study its environment and its 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.

   1.10 Completed FGS 6468 (HD98800, An Extraordinary K Star: Completion =
of the Astrometry in Cycle 6)

       The FGSs were used to make astrometric observations of the =
extraordinary, known binary system, K class star HD98800.  These data =
will be used for orbit determination of this binary star system.  The =
basic geometry of this system indicates that material around these stars =
must form a very thick disk, yet such a disk should collapse very =
quickly.  How then is this systems disk maintained?  The observations =
were completed as planned, and no problems were reported. 

   1.11 Completed GHRS/2 6504 (Cepheid Masses)

       The High Resolution Spectrograph (Side Two) was used to make =
observations of the binary Cepheid variable star HD72660 in order to =
measure its mass.  The luminosity of a Cepheid with a given mass depends =
sensitively on the amount of excess mixing above the core of the main =
sequence progenitor star.  A wavelength calibration image was also taken. =
 The observations were executed as scheduled, and no anomalies were =
noted. 

   1.12 Completed FOS/RD 6636 (The Stellar Population of M-32: Dual =
Approch)

       The Faint Object Spectrograph (Red Side) was used to make =
spectrographic observations of the Andromeda Galaxy AKA, M-32 and =
NGC-441) in order to study its stellar populations.  The observations =
were carried out as scheduled, and no anomalies were rreported. 

   1.13 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.

   1.14 Completed GHRS/1 6457 (The Abundance of Interstellar Nitrogen)

       The High Resolution Spectrograph (Side One) was used to make high =
signal-to-noise ratio spectrographic observations of the background, OB =
class star HD37043 in order to obtain absorption spectra from the =
foreground interstellar nitrogen.  The nitrogen abundance is important as =
previous determinations of carbon and oxygen abundances show the C and O =
abundances are sufficiently less than the solar values.  The observations =
were completed as planned, and no problems were reported.

   1.15 Completed GHRS/1 6783 (Activity On The Edge of Convection: The =
Atmosphere of Canopus (F0 Ib-II))

       The High Resolution Spectrograph (Side One) was used to make =
spectrographic observations of the F0 Ib-II class star Canopus (aka, Eta =
Car and HD45348) in order to study the activity at the edge of its outer =
convection zone.  Canopus is the closest supergiant star at about 40 PC.  =
It is known to have a very thin convection zone, yet it shows a =
significant x-ray emission from its outer corona.  The observations were =
completed as planned, and no anomalies were reported.  

   1.16 Completed WF/PC-2 6352 (Dwarf Eliptical Galaxy Snapshots)

       The WF/PC-2 was used to survey FCC110, from a sample of 30 dwarf =
eliptical galaxies.  The observations were completed as planned, and no =
anomalies were reported.

   1.17 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 linear separation of 400 KPC.  The observations =
were completed as planned, and no problems were reported. 

   1.18 Completed WF/PC-2 6345 (Determining the Binary Frequency for =
Ultra-Cool, Nearby M Dwarf Stars)

       The WF/PC-2 was used to make observations of ultra-cool, nearby, M =
class dwarf star BRI1222-12 to determine the frequency for it being a =
binary system and to try to detect stellar and sub-stellar companions.  =
The observations were executed as scheduled, and no anomalies were noted.

   1.19 Completed GHRS/1 6886 (GHRS Observations of Eta UMa)

       The High Resolution Spectrograph (Side One) was used to make =
spectrographic observations of absorption features from the warm, =
interstellar cloud surrounding the solar system in the spectrum of the B3 =
V class star Eta UMa (aka, HD120315).  The abundances of C, N, O, Si, Zn, =
Fe, and Mg will be measured and the cloud's physical structure can be =
inferred.  A wavelength calibration image was also taken.  The guide star =
acquisition for the peakup defauled to finelock backup on FGS #2 only =
when FGS #3 exceeded the scan steps limit.  HSTAR 5862 was written.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.20 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 IR2121-175 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. 

   1.21 Completed Two Sets of 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 galaxies NGC-2397 and NGC-1688 in order to study their central =
bulges.  The aim is to investigate the core properties, correlations 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.

   1.22 Completed FOS/BL 6683 (Eclipsing Binaries in the Magellanic =
Clouds - Fundamental Properties A)

       The Faint Object Spectrograph (Blue Side) was used to make =
spectrographic observations of O/B Class, eclipsing binary system star =
LMC-HV1263 located in the Large Magellanic Cloud.  From these data and =
the latest Kurucz model atmospheres, accurate temperatures will be =
derived.  The observations were executed as scheduled, and no anomalies =
were noted. 

   1.23 Completed Two Sets of FOS/BL 6407 (Post Asymptotic Giant Branch =
Evolution in the Magellanic Clouds)

       The Faint Object Spectrograph (Blue Side) was used to make =
ultraviolet spectrographic observations of planetary nebulae LMC-SMP41 =
and LMC-SMP50 which are located in the Large Magellanic Cloud.  These =
data should give the spatial structure, size, ionized masses, and dynamic =
ages of these objects.  During the second session of this proposal, the =
guide star acquisition at 002/212100Z and the subsequent re-acquisition =
failed to SSM control (RGA only) when the search radius was exxceeded.  =
HSTAR 5864 was written.  As a result of these actions, the spacecraft was =
not stable at the beginning of the peakups, and FOS status buffer message =
290 was issued when the take data flag had not been raised.  The full =
effect on the science in this iteration of the proposal is not currently =
known.  Otherwise, the observations were executed as planned, and no =
further problems were reported. 

   1.24 Completed FOS/RD 6417 (Star Formation in the Prototype Super =
Cluster R136)

       The Faint Object Spectrograph (Red Side) was used to make =
spectrographic observations of the star formation in the prototype super =
star cluster R136-012 in order to study its intense star formation =
regions.  This, in fact, may be the young analogs of globular clusters.  =
The observations were completed as scheduled, and no problems were =
reported. 

   1.25 Completed Two Sets of WF/PC-2 6519 (Parallel High Resolution =
Imaging of Defuse Objects in the Magellanic Clouds)

       The WF/PC-2 was used to make high resolution observations of a =
defuse object located in the Large Magellanic Cloud.  These data will =
allow the detailed study of the morphology and spatial relationship of =
various interstellar processes.  These observations were taken in =
parallel with the prime science observations.  The observations were =
executed as scheduled, and no anomalies were noted.

   1.26 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.

   1.27 Completed FOS/RD 6592 (The Distribution and Evolution of =
Lyman-Alpha Forest Cloud Sizes)

       The Faint Object Spectrograph (Red Side) was used to make =
observations of quasi-stellar source Q0107-0232 in order to study the =
distribution and evolution of the foreground Lyman-Alpha Clouds.  =
Together with ground-based observations, these data will help study the =
evolution of the cloud's radii with redshift, with the characteristic =
size of the Lyman-Alpha absorbers decreasing with increasing redshift.   =
The observations were executed as scheduled, and no anomalies were noted. =


   1.28 Completed WF/PC-2 6609 (The WF/PC-2 B-Band Parallel Survey: A =
Systematic and Synoptic Study )

       The WF/PC-2 was used to make B-Band survey observations in =
parallel with the prime science observations.  A total of 216 exposures =
will be taken over a period of time to make a statistical study of the =
formation and evolution of the galaxies.  The observations were executed =
as scheduled, and no anomalies were noted. 

   1.29 Completed WF/PC-2 6194 (WF/PC-2 Cycle 5: Polarization Proposal)

       The WF/PC-2 was used to make polarization observations of star =
G191B2B at four different spacecraft role angles.  This should permit a =
detailed and independent calibration of each polarizer quad.  The =
observations were executed as scheduled, and no anomalies were noted. 

   1.30 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 ul=
traluminous IRAS galaxy QDOTULIR03.  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.

   1.31 Completed FOS/BL 6781 (Soft X-Rays and the UV Spectra of a =
Complete QSO Sample)

       The Faint Object Spectrograph (Blue Side) was used to obtain =
ultraviolet spectra of the low-Z quasi-stellar object PG1415+451.  The =
ionization continuum of this object has been studied using the ROSAT =
satellite.  The strengths and line profiles of strong and weak =
ultraviolet emission and absorption lines and the ultraviolet continuum =
were studied.  The observations were completed as planned and no =
anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 28
                                        Successful : 27
                          Scheduled Reacquisitions : 39
                                        Successful : 38

       As described more fully in 1.19, the acquisition at 366/202403Z =
defaulted to finelock backup on FGS #2 only.

       As described in HSTAR 5864 and in 1.23, the quide star acquisition =
at 002/212100Z and the following reacquisition both failed when the =
search radius was exceeded.

   2.2 FHST Updates: 

                              Scheduled : 47
                             Successful : 47

   2.3 Operations Notes: 

       There were no significant operational problems encountered over the=
 New Year holiday period.

       At 366/1850Z, the TTAC software was successfully upgraded from =
4.04 to 4.05.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH