HUBBLE SPACE TELESCOPE

                              DAILY REPORT #1375

PERIOD COVERED:  0000Z (UTC) 04/21/95 - 0000Z (UTC) 04/24/95

Daily Status Report as of 114/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Set of WF/PC-2 5463 (Buried QSOs in IRAS-Selected Ultra
luminous AGNs)

       The WF/PC-2 was used to make observations of the luminous  IRAS active
galactic nuclei of galaxies IRAS0910+4 and IRAS2046+1 to try and resolve the
polarized scattering regions in their cores. The first set of observations
were completed as planned, and no anomalies were reported. However, during
the second set of observations the guide star acquisition failed to coarse
track at 113/1644Z due to  a scan step limit being exceeded. The following
reacquisitions also failed to coarse track. The total time spent in coarse
track was approximately five hours. The problem appeared to be a bad guide
star.

   1.2 Completed WF/PC-2 5560 (WF/PC-2 Cycle 4 Calibration: Internal Monitor.
1) 

       The WF/PC-2 was used to make several internal bias, K-Spot, and flat
calibration observations to monitor the CCD camera electronics, the optical
alignment, and to check for contamination. The observations were completed as
planned, and no anomalies were noted. 

   1.3 Completed WF/PC-2 5401 (Luminosities and Morphologies of a Complete
3CR Sample of Radio Galaxies)

       The WF/PC-2 was used to obtain images of radio galaxy 3C175.1, which
has a Z near 1.0, and also is a quasar. These observations will be used to
determine and compare luminosities, and morphologies in the optical and
infrared. The observations were executed as scheduled, and no anomalies were
noted. 

   1.4 Completed Three Sets of WF/PC-2 5562 (WF/PC-2 Cycle 4 Calibration:
Internal Monitor 3: Darks)

       The WF/PC-2 was used to obtain several 30-minute long, dark exposures
to provide ongoing calibration of the CCD dark current and to monitor and
characterize the evolution of hot pixels. The observations were executed as
scheduled, and no anomalies were noted. 

   1.5 Completed WF/PC-2 5393 (The Nature of the Host Galaxies of
High-Redshift, Radio-Loud Quasars)

       The WF/PC-2 was used to make observations of galaxy MRC0549-21 which
contains a high red-shifted, radio-loud quasar to study its morphology. This
data will be compared with low-Z QSOs and other radio galaxies. The
observations were executed as scheduled, and no anomalies were noted. 

   1.6 Completed WF/PC-2 5132 (A Photometric Search for Planets of Nearby
Stars) 

       The WF/PC-2 was used to make photometric observations of nearby star
BD+4D2561H to search for possible planets. The exposure time was calculated
so that area beyond 1.2 arcseconds from the central star is not saturated.
The observations were completed as planned, and no problems were reported. 

   1.7 Completed Two Sets of FOS/BL 6146 (FOS Location of Spectra and
Aperture - Part 2)

     The Faint Object Spectrograph (Blue Side) was used to conduct a test to
determine the repeatability of positioning the filter-grating wheel. All
observations were internal. A wave length calibration image, Taled
calibration and a Dark image were also taken. All observations were executed
as scheduled, and no anomalies were noted.

   1.8 Completed WF/PC-2 5106 (Planetary Nebular Structure (WC03): Cycle 4)

       The WF/PC-2 was used to make images of the planetary nebula NGC-7293
to study long lived condensations that appear in this object. The
observations were executed as planned, and no problems were reported. 

   1.9 Completed WF/PC-2 5629 (WF/PC-2 Cycle 4 Photometric Calibration
Monitor 1C: 4-Chip STD in F170W)

       The WF/PC-2 was used to make photometric calibration observations of
the ultraviolet standard star GRW+70D582. The guide star acquisition at
112/2005Z failed  during ZOE (HSTAR 5187). The search radius limit was
exceeded, and the following update roll delay indicated a V3 error of 86
arcseconds. There was no time to schedule an ARU/PRT corrective maneuver, and
this effected the next set of observations (See Note 1.10).

   1.10 Completed FOS/BL 5459 (Ultraviolet Interstellar Polarization: Cycle 4
High)

       The Faint Object Spectrograph (Blue Side) was used to make ultraviolet
spectrographic observations of the bright star HD207538 to study interstellar
polarization along the line of sight to the star. This is to study
interstellar grains that are responsible for the extinction and polarization
of the star light. The previous observations encountered a guide star
acquisition failure (See Note 1.9), and there was no time to unlink a
corrective ARU/PRT maneuver. Therefore, the acquisition at 112/2101Z failed
(HSTAR 5187). The ARU was successfully uplinked to the spacecraft at
112/2246Z and the subsequent acquisition at 112/2350Z was successful.

   1.11 Completed WF/PC-2 5371 (HST Medium Deep Survey: Cycle 4 Medium Low
Galactic Latitude)

       The WF/PC-2 was used in parallel with the prime science observations
to make low galactic latitude deep multicolor images of objects such as
galaxies, and stars in our galaxy. The observations were completed as
planned, and no problems were reported. 

   1.12 Completed WF/PC-2 5450 (Host Galaxies and Cluster Environments of
Quasars)

       The WF/PC-2 was used to make observations of Quasar Q1222+1010 to
study the properties of its host galaxy and surrounding environment. The
observations were executed as scheduled, and no anomalies were noted. 

   1.13 Completed WF/PC-2 5479 (Subarcsecond Structure in Nearby AGNs)

       The WF/PC-2 was used to make snapshot observations of the nearby
active galactic nuclei of F294 to study the interactions between the central 
engine, the stars, and the interstellar matter in 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 : 16
                                        Successful : 15

       There was a guide star acquisition failure at 112/2005Z (During a
ZOE).

                          Scheduled Reacquisitions : 19
                                        Successful : 19

   2.2 FHST Updates: 

                              Scheduled : 48
                             Successful : 48

   2.3 Significant HSTARs: None

   2.4 Operations Notes: 

       Last week, the bit slips while dumping ESTR #2 continued, but at a
greatly reduced rate.  Also, there were data inversions while operating from
STGT, but only on three occasions on Sunday.

       FSW 9.5 was installed completely by 113/1228Z.  There were no reported
problems.  The CoP status is being monitored by  TALOS.

3.0 ANOMALY STATUS:

   3.1 Significant New Anomalies: None

   3.2 Significant Unresolved Anomalies: None

4.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH
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