HUBBLE SPACE TELESCOPE

   DAILY REPORT #2571

PERIOD COVERED:  0000Z (UTC) 03/01/00 - 0000Z (UTC) 03/02/00

Daily Status Report as of 062/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed STIS/CCD 8421 (Spectroscopic Sensitivity for (MAMA and) CCD)

        The Space Telescope Imaging Spectrograph (CCD) was used to perform 
basic sensitivity measurement for some supported (MAMA and) CCD 
spectroscopic modes.  Sensitivity measurements are done for a few primary 
tilts of the gratings.  The proposal completed nominally, with no reported 
problems.

    1.2 Completed Four 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.

    1.3 Completed Two Sets of WF/PC-2 8457 (UV Earth Flats)

        The WF/PC-2 was used to obtain a series of Ultraviolet Earth 
flats.  The observations were completed with no reported problems.

    1.4 Completed STIS/CCD/MA1 8435 (LSF Measure of the MAMA Echelle Modes)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
measure the LSF of the Echelle modes with an external target using a narrow 
slit.  The proposal completed nominally.

    1.5 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 HD192639 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.

    1.6 Completed WF/PC-2/STIS/CCD/MA1/MA2 8256 (Deep Helium-Mixing and the 
Ultraviolet Spectra of Hot Horizontal Branch Stars)

        The WF/PC-2 and The Space Telescope Imaging Spectrograph (CCD, MA1 
and MA2) was used to make observations of globular Cluster NGC-6752 in 
order to study the deep helium-mixing and the ultraviolet spectra of hot 
horizontal branch stars.  There is now good evidence that the luminosities 
and gravities of hot horizontal branch stars in globular clusters are not 
correctly described by canonical models of core helium- burning stars.  A 
wavelength calibration image was also taken.  The observations were 
executed as scheduled, and no anomalies were noted.

    1.7 Completed STIS/MA2 8426 (Cycle 8 MAMA Dark Measurements)

        The Space Telescope Imaging Spectrograph (MA2) 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.

    1.8 Completed STIS/MA1/MA2 8201 (Ultra-luminous Infrared Galaxies)

        The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to 
make ultraviolet observations of the ultra-luminous infrared galaxy 
IRAS08572.  Ultra-luminous Infrared Galaxies are the most luminous galaxies 
known in the local universe, and are predominantly powered by massive star 
formation.  The observations were executed as scheduled, and no anomalies 
were noted.

    1.9 Completed WF/PC-2 7447 (The Cosmological Evolution of Quasar Host 
Galaxies)

        The WF/PC-2 was used to make observations of the host galaxy which 
surrounds quasar 1400-024 in order to study its cosmological 
evolution.  The observations were executed as scheduled, and no anomalies 
were reported.

    1.10 Completed Three Sets of STIS/CCD 8549 (POMS Test Proposal: 
Non-Scripted Parallel Proposal Continuation I)

        The Space Telescope Imaging Spectrograph (CCD) was used to make low 
galactic latitude, non-scripted parallel observations as part of a POMS 
test proposal.  The observations were completed as planned, and no 
anomalies were reported.

    1.11 Completed STIS/CCD 8439 (Bias Monitor-Part 2 C8)

        The Space Telescope Imaging Spectrograph (CCD) was used 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 track the evolution of hot 
columns.  The proposal completed with no reported problems.

    1.12 Completed STIS/CCD 8437 (Dark Monitor-Part 2 C8)

        The Space Telescope Imaging Spectrograph (CCD) was used to monitor 
the darks.  The proposal completed nominally.

    1.13 Completed Two Sets of WF/PC-2 8175 (A Survey of Gravitational 
Lenses as Cosmological Tools III)

        The WF/PC-2 was used to make observations of the gravitational lens 
systems Q1838-342 and RXJ09114+0.  Gravitational lenses are powerful tools 
for studying cosmology, galactic structure, and galaxy evolution.  The 
observations were completed as planned, and no anomalies were reported.

    1.14 Completed Two Sets of WF/PC-2 8445 (WF/PC-2 Cycle 8 Earth Flats)

        The WF/PC-2 was used to make Cycle 8 Earth flat calibration 
observations.  This is to obtain sequences of earth streak flats to 
construct high quality flat fields for the WF/PC-2 filter set.  The 
observations were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions: 8
Successful: 8

  Scheduled Re-acquisitions: 8
Successful: 8

    2.2 FHST Updates:
Scheduled: 21
Successful: 21

    2.3 Operations Notes:

        Using ROP SR-1A, the SSR EDAC errors were cleared twice.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW