HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1689

PERIOD COVERED:  0000Z (UTC) 08/02/96 - 0000Z (UTC) 08/05/96

Daily Status Report as of 218/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 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.  =
The observations were completed as scheduled, and no problems were =
reported.

   1.2 Completed FOS/BL 6484 (Absorbing Outflows in Quasars and AGNs)

       The Faint Object Spectrograph (Blue Side) was used to make high =
signal-to-noise ratio spectrographic observations of the active galactic =
nuclei of MR2251-178 in order to study its absorbing outflows and =
physical conditions.  The observations were executed as scheduled, and no =
anomalies were noted.

   1.3 Completed FOS/BL/GHRS/1 6551 (Fishing the Coronal Graveyard)

       The Faint Object Spectrograph (Blue Side) and the High Resolution =
Spectrograph (Side One) were both used to make far ultraviolet, emission =
spectra observations of the K class giant star HD105707.  The objective =
is to obtain some insight into coronal activity among giants which ought =
to have quiet coronae.  The observations were executed as scheduled, and =
no anomalies were noted.

   1.4 Completed WF/PC-2 6888 (Scattered Emissions From the Active =
Nucleus Buried in NGC-4258)

       The WF/PC-2 was used to make observations of the buried active =
nuclear region and its surrounding disk of galaxy NGC-4258 to study its =
scattered ultraviolet emission lines.  The observations were completed as =
planned, and no anomalies were noted.

   1.5 Completed FOS/BL 6498 (Accretion Streams in Magnetic Variables: =
FOS Eclipse of 4 Rosa)

       The Faint Object Spectrograph (Blue Side) was used to make rapid =
mode spectrographic observations of the accretion streams in the magnetic =
variable star (i.e., Cataclysmic variable) 1F1752+081 (aka, 4 Rosa).  =
This is a binary system, and it contains a white dwarf star, an accretion =
disk, a mass stream, and hot spot where the mass stream hits the disk and =
a companion star.  The observations were completed as planned and no =
anomalies were reported.

   1.6 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 OB class star =
HD160578 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 these abundances are =
sufficiently less than the solar values.  The observations were completed =
as planned, and no problems were reported.

   1.7 Completed GHRS/2 6456 (The Photospheric Iron Abundance of the UV =
Bright Stars in a Globular Cluster)

       The High Resolution Spectrograph (Side Two) was used to make =
ultraviolet spectrographic observations of five ultraviolet bright stars =
located in the globular cluster NGC-5139 in order to study the stars' iron=
 abundances and the predictions given by stellar evolution theory.  These =
ultraviolet bright stars are in a post-AGB stage of evolution, and are on =
the way to becoming white dwarf stars.  The observations were completed =
as planned, and no problems were reported.

   1.8 Completed FOC/96 6775 (Secular Changes in the Jet of M87)

       The Faint Object Camera (F/96) was used to look for secular =
changes in the jet coming out of the active galactic nuclei of Galaxy =
M-87.  M-87 is a large (Ep Class) elliptical galaxy located in the Virgo =
galactic cluster.  Comparison with images taken in previous observing =
cycles will allow the investigators to measure changes in the jet, and =
the speed of various knots in the jet.  Polarization images and an =
internal flat calibration image were also taken.  The observations were =
executed as scheduled, and no anomalies were noted.

   1.9 Completed FOS/RD 6204 (FOS Cycle 5 Internal/External Offset)

       The Faint Object Spectrograph (Red Side) was used to make =
spectrographic calibration images of standard star HD207757 in order to =
measure the spectrograph's internal and external offsets.  The internal =
lamp was intermingled with the external observations.  The observations =
were completed as planned, and no problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 11
                                        Successful : 11

                          Scheduled Reacquisitions : 33
                                        Successful : 33

   2.2 FHST Updates: 

                              Scheduled : 30
                             Successful : 30

   2.3 Operations Notes: 

       A TTR was written when there was no GCMR update capability for =
nine minutes on day 217 due to problems at NCC.

       There were no other significant problems for the entire weekend =
period

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH