HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2428

PERIOD COVERED:  0000Z (UTC) 08/03/99 - 0000Z (UTC) 08/04/99

Daily Status Report as of 216/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three 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.  

   1.2 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.  

   1.3 Completed WF/PC-2 8447 (Cycle 8 WFPC2 CTE Monitor)

       The WF/PC-2 was used to make observations of the large globular cluster
NGC-5139 (a.k.a., Omega Centaurus) to monitor the CTE changes during Cycle-8. 
An internal flat calibration image was also taken.  The observations were
executed as scheduled, and no anomalies were noted.  

   1.4 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.  

   1.5 Completed Four 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 both
high and low 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.  The observations were completed as scheduled,
and no anomalies were reported.  

   1.6 Completed Two Sets of STIS/CCD 8470 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation V)

       The Space Telescope Imaging Spectrograph (CCD) was used to make both
high and low 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.  

   1.7 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.  

   1.8 Completed STIS/CCD 8202 (Bright Quasar Close Lensing Search)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of HCLQ1325-2 as part of a second generation survey to search for
bright lensing quasars.  With the restored PSF, new images will be considerably
more sensitive to the presence of both close separation and faint lens
components, and because STIS reaches two magnitudes fainter the PC, the new
snapshot images will have much greater dynamic range.  The observations were
executed as scheduled, and no anomalies were noted.  

   1.9 Completed WF/PC-2 8192 (A Snapshot Survey of Probable Nearby Galaxies)
       The WF/PC-2 was used to make a snapshot survey images of a probable
nearby galaxy KK165.  The census of galaxies in the Local Volume of space is
very incomplete, particularly at the faint end.  The observations were executed
as scheduled, and no anomalies were noted  

   1.10 Completed Four Sets of 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.  

   1.11 Completed STIS/MA1 8042 (UV Imaging and Spectroscopy of High Excitation
Herbig-Haro Objects)

       The Space Telescope Imaging Spectrograph (MA1) was used to make
ultraviolet images and spectrographic observations of the high excitation
Herbig-Haro HH-2.  A wavelength calibration image was also taken.  The
observations were executed as scheduled, and no anomalies were noted.  

   1.12 Completed Five Sets of WF/PC-2 8090 (POMS Test Proposal: WF-II Parallel
Archive Proposal Continuation)

       The WF/PC-2 was used in the parallel mode to make some low galactic
latitude archive observations.  The program will be used to take parallel
images of random areas of the sky.  The observations were executed as
scheduled, and no anomalies were noted.  

   1.13 Completed STIS/CCD/MA1/MA2 7389 (Chromospheres and Transition Layers in
Hyades and Pleiades F Stars)

       The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was used to
make observations of the F class star HD26784 which is located in the Hyades
star cluster.  This proposal seeks to obtain additional empirical constraints
on the heating mechanisms for stellar chromospheres, transition layers and
coronae.  A wavelength calibration observation was also taken.  The
observations were completed as planned, and no problems were reported.

   1.14 Completed four Sets of FGS 8102 (FGS Astrometry of the Extrasolar
Planet of GL876)

       The Fine Guidance Sensors were used to make astrometric observations of
a extrasolar planet which is orbiting the M4 class dwarf star GL876.  This will
help determine the planet’s mass.  The observations were completed as planned,
and no problems were reported.  

   1.15 Completed Three Sets of STIS/MA2 8430 (STIS MAMA Dipsersion Solution
Check)

       The Space Telescope Imaging Spectrograph (MA2) was used to perform a
wavelength dispersion observation which is determined on a yearly basis {2x in
Cycle 8} as part of a long-term monitoring program.  The observations were
completed as planned, and no anomalies were reported.  

   1.16 Completed STIS/MA1 8431 (Doppler Test of Far UV MAMA with Jenkins Slit)

       The Space Telescope Imaging Spectrograph (MA1) was used to execute a
Doppler test to measure the limiting resolving power of the far-ultraviolet
MAMA using the Jenkins 0.100x0.030 slit.  The observations were completed as
planned, and no anomalies were noted.  

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 11
                                        Successful : 11

                          Scheduled Reacquisitions : 5
                                        Successful : 5

   2.2 FHST Updates: 

                              Scheduled : 21
                             Successful : 21

   2.3 Operations Notes: 

       The SSR EDAC error counter was cleared twice, using ROP SR-1.

       Per ROP DF-7, the ephemeris tables were successfully uplinked, dumped,
and compared.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

       Continuation of normal science observations and calibrations.

/DMH