HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2414

PERIOD COVERED:  0000Z (UTC) 07/14/99 - 0000Z (UTC) 07/15/99

Daily Status Report as of 196/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 8441 (WF/PC-2 Decontaminations and Associated
Observations Pt. 1/2)

       The WF/PC-2 was used to make its monthly decontamination operations. 
Also, included are instrument monitors tied to decons: photometric stability
check, focus monitor, pre- and post-decon internals {bias, internal flats,
k-spots, and darks}, and ultraviolet throughput checks.  The observations were
executed as scheduled, and no anomalies were noted.  

   1.2 Completed Two Sets of WF/PC-2 8443 (WF/PC-2 CYCLE-8 Supplemental Darks
pt1/3)

       The WF/PC-2 was used to obtain three dark frames every day to provide
data for monitoring and characterizing the evolution of hot pixels.  The
observations were completed as planned, and no problems were reported.  

   1.3 Completed STIS/CCD/MA1 8241 (A Snapshot Survey of Interstellar
Absorption Lines)

       The Space Telescope Imaging Spectrograph (CCD and MA1) was used to make
high resolution Echelle spectrographic observations of the standard ultraviolet
star HD156110 as part of a snapshot survey of interstellar absorption lines.  A
wavelength calibration image was also taken.  The observations were executed as
scheduled, and no anomalies were noted.  

   1.4 Completed STIS/MA1 8426 (Cycle 8 MAMA Dark Measurements)

       The Space Telescope Imaging Spectrograph (MA1) was used to make a
routine Cycle-8 MAMA dark noise calibration measurement.  This proposal will
provide the primary means of checking on the health of the MAMA detectors. 
This is done through frequent monitoring of the background count rate.  The
observations were completed as planned, and no problems were reported.  

   1.5 Completed WF/PC-2 8195 (The Stellar Halo and the Metallicity
Distribution Function in the Giant Elliptical NGC 5128)

       The WF/PC-2 was used to make observations of the giant elliptical galaxy
NGC-5128 in order to study its stellar halo and the metallicity distribution
function.  Because this galaxy is 2 magnitudes closer than any other giant
elliptical galaxy, it gives us a unique opportunity to study the enrichment
history at a level of detail that is impossible for any other such galaxy.  The
observations were completed as planned, and no problems were reported.  

   1.6 Completed Four Sets of STIS/CCD 7912 (STIS Parallel Archive Proposal -
Nearby Galaxies - Imaging and Spectroscopy)

       The Space Telescope Imaging Spectrograph (CCD) was used to make parallel
observations of nearby galaxies.  This survey will be useful to study the star
formation histories, chemical evolution, and distances to these galaxies. 
These data will be placed immediately into the Hubble Data Archive.  The
observations were completed as scheduled, and no problems were reported.  

   1.7 Completed STIS/CCD 8409 (STIS CCD Bias Monitor C8)

       The Space Telescope Imaging Spectrograph (CCD) was used to make a CCD
bias calibration observation.  This is to monitor the bias in the 1x1, 1x2,
2x1, and 2x2 bin settings at gain=1, and 1x1 at gain = 4, to build up high-S/N
superbiases and to track the evolution of hot columns.  The observations were
executed as scheduled, and no anomalies were reported.  

   1.8 Completed Two Sets of STIS/CCD 8408 (STIS CCD Dark Monitor C8)

       The Space Telescope Imaging Spectrograph (CCD) was used to make a CCD
bias calibration observation. This is to monitor the darks for the STIS CCD. 
The observations were executed as scheduled, and no anomalies were reported.  

   1.9 Completed STIS/CCD 8470 (POMS Test Proposal: STIS Non-Scripted Parallel
Proposal Continuation V)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude observations taken in parallel with the prime science
observations as part of a POMS proposal.  This is a STIS non-scripted parallel
Condition VI proposal.  The observations were completed as scheduled, and no
anomalies were reported.  

   1.10 Completed STIS/CCD 7351 (Kinematics of the H-Alpha Nuclear Disk in
M-81: A Search for a MBH in the Nearest LINER)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the H-Alpha nuclear disk in galaxy NGC-3031 (a.k.a., M-81).  As
the nearest example of an Active Galactic Nucleus (AGN) with a directly
observable nucleus, M-81 is important and merits intense scrutiny.  A
wavelength calibration image was also taken.  The observations were executed as
scheduled, and no anomalies were noted.  

   1.11 Completed Two Sets of STIS/CCD 8406 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation V)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude observations taken in parallel with the prime science
observations as part of a POMS proposal.  This is a STIS non-scripted parallel
Condition V proposal.  As described in 2.1 and HSTAR 7193, the acquisition for
the final iteration of this proposal failed and the take data flag remained
down.  Otherwise, the observations were completed as scheduled, and no further
anomalies were reported.  

   1.12 Completed WF/PC-2 8345 (Multipolar Bubbles and Jets in Very Low
Excitation Planetary Nebulae - A WF/PC-2 H-Alpha Imaging Survey)

       The WF/PC-2 was to be used to make H-Alpha observations of the very low
excitation planetary nebula PK051-03D1 in order to study its multipolar bubbles
and jets.  As described in 2.1 and HSTAR 7193, the acquisition for this
proposal failed and the take data flag remained down.

   1.13 Completed STIS/CCD/MA1 7288 (High Resolution Ultraviolet Spectroscopy
of Hercules X-1/HZ Herculis)

       The Space Telescope Imaging Spectrograph (CCD and MA1) was used to make
ultraviolet spectrographic observations of the X-ray binary pulsar 4U1656+35
(a.k.a., Hercules X-1/HZ Herculis).  A wavelength calibration observation was
also taken.  The observations were executed as scheduled, and no anomalies were
noted.  

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 5
                                        Successful : 4

       Per HSTAR 7193, the acquisition at 195/223601Z failed when the scan step
limit was exceeded on FGS-3.  The proposals described in 1.11 and 1.12 were
affected.

                          Scheduled Reacquisitions : 10
                                        Successful : 10

   2.2 FHST Updates: 

                              Scheduled : 17
                             Successful : 17

   2.3 Operations Notes: 

       Using ROP SR-1, the SSR EDAC error counter was cleared twice.

       At real-time map was executed at 195/2243Z.

       An SM3A SMGT for the SSR and the SSAT will be conducted all day today.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

       Continuation of normal science observations and calibrations.

/DMH