HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1638

PERIOD COVERED:  0000Z (UTC) 05/20/96 - 0000Z (UTC) 05/21/96

Daily Status Report as of 142/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 6364 (Snapshot Survey of Proto-Planetary Nebulae =
and AGB Stars)

       The WF/PC-2 was used to make some snapshot survey observations of =
protoplanetary nebular system IRAS0629 to study its circumstellar =
envelope.  The purpose is to discern the evolutionary sequence that =
produces axially-symmetric planetary nebulae.  The observations were =
executed as scheduled, and no anomalies were noted.

   1.2 Completed Four Sets of WF/PC-2 6188 (WF/PC-2 Cycle 5 Calibration: =
Dark)

       The WF/PC-2 was used to make internal dark calibration images. .  =
During the last iteration of this proposal, the losses of lock mentioned =
in 2.1 occurred.  Otherwise, the observations were completed as =
scheduled, and no further problems were reported.

   1.3 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 PG1309+355.  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.

   1.4 Completed WF/PC-2 6187 (WF/PC-2 Cycle 5 Calibration: Earth Flat)

       The WF/PC-2 was used to make Earth streak flat calibration images. =
 These streak flats will be used to produce flat fields, to map the OTA =
illumination pattern and, in combination with other data, to produce new =
superflats.  The observations were completed as planned, and no problems =
were reported.

   1.5 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 object 1ES1028+51 in order to study its environment and its host =
galaxy.  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.

   1.6 Completed WF/PC-2 5844 (HST Investigation of a Bright, New Comet)

       The WF/PC-2 was used to make observations of the bright new comet =
Hale-Bopp (aka, Comet C/1995 O1).  The images will yield information of =
the nuclear size and coma near the nucleus.  During this proposal, the =
losses of lock mentioned in 2.1 occurred.  No other anomalous activity =
was noted.

   1.7 Completed FOS/RD/BL 6017 (Soft X-Ray Transients, Outburst in Black =
Hole Accretion Disks)

       The Faint Object Spectrograph (Both the Blue and Red Sides) were =
used to make target of opportunity observations of the cataclysmic =
contact-binary star J1655-40 which is known to show soft X-ray =
transients.  These outburst are believed to be caused by the accretion =
disk surrounding a black hole.  The observations were completed as =
scheduled, and no problems were reported. 

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 5
                                        Successful : 5

                          Scheduled Reacquisitions : 11
                                        Successful : 11

       As noted  in HSTAR 5616, there were repeated losses of lock =
beginning at 141/220211Z that continued throughtout the T3 slew.

   2.2 FHST Updates: 

                              Scheduled : 11
                             Successful : 11

   2.3 Operations Notes: 

       During the tape recorder dumps at 141/1616Z and 141/1747Z, there =
were three and seven poly errors respectively.  During the re-dump at =
142/031Z, there were three poly errors.  All dumps were performed on the =
707 line.  The effects of these errors on science data is currently =
unknown.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH