HUBBLE SPACE TELESCOPE

   DAILY REPORT #2568

PERIOD COVERED:  0000Z (UTC) 02/25/00 - 0000Z (UTC) 02/28/00

Daily Status Report as of 059/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed Seven 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.

    1.2 Completed Three Sets of 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.

    1.3 Completed STIS/CCD 8299 (Mapping the Dynamics of the Quasar 3C 48)

        The Space Telescope Imaging Spectrograph (CCD) was used to 
determine the relation between the properties of the radio source and those 
of the {optical} line-emitting gas in quasars and radio galaxies.  The 
observations completed with no reported problems.

     1.4  Completed Two Sets of STIS/CCD/MA1/MA2 8317 (Mass Accretion Rates 
for Pre-Main Sequence Intermediate Mass Stars)

        The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was 
used to obtain the first direct, accurate measurements of mass accretion 
rates for intermediate mass {1.5M{sun} to 3.5M{sun}} T Tauri stars}, 
precursors of the Beta Pic- type stars.  The observations completed nominally.

    1.5 Completed Six Sets of STIS/CCD 8437 (Dark Monitor-Part 2 C8)

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

    1.6 Completed Two Sets of 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 stars HD23873 andHD175156 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.

    1.7 Completed Four Sets of WF/PC-2 8459 (Decontaminations and 
Associated Observations Pt. 2/2)

        The WF/PC-2 was used to perform the monthly decons.  Also included 
are instrument monitors tied to decons: photometric stability check, focus 
monitor, pre- and post-decon internals {bias, intflats, kspots, & darks}, 
and UV throughput checks.  The observations were completed nominally.

    1.8 Completed STIS/CCD/MA1 8169 (HST-Galileo Io Campaign)

        The Space Telescope Imaging Spectrograph (CCDand MA1) was used to 
make observations of Jupiter's moon Io.  Io plays a central role in the 
Jovian system, yet the mechanisms that couple its volcanoes, the tenuous 
atmosphere, the escaping corona and the plasma torus remain elusive.  In 
1999 there is the unique opportunity to combine HST observations with the 
Galileo close flybys of Io.  The observations were completed as planned, 
and no problems were reported.

    1.9 Completed Six Sets of WF/PC-2 8460 (Cycle 8 Supplemental Darks pt2/3)

        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 completed with no reported problems.

    1.10 Completed Four 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.

    1.11 Completed Ten 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.

    1.12 Completed STIS/CCD/MA2 8435 (LSF Measure of the MAMA Echelle Modes)
        The Space Telescope Imaging Spectrograph (CCD and MA2) was used to 
measure the LSF of the Echelle modes with an external target using a narrow 
slit.  The proposal completed nominally.

    1.13 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 PSF-Star in order to study its cosmological 
evolution.  The observations were executed as scheduled, and no anomalies 
were reported.

    1.14 Completed WF/PC-2 8240 (Masses and Spins of Black Holes in Seyfert 
Galaxies)

        The WF/PC-2 was used to observe about 20 bright Seyfert 1 galaxies 
that are now known to have very broad {up to 100, 000 km s^-1} Fe KAlpha 
emission lines near 6.4 keV.  The observations completed nominally.

    1.15 Completed Two Sets of STIS/CCD 8202 (Bright Quasar Close Lensing 
Search)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of HCLQ0447-3 and HCLQ1118-0 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.

    1.16 Completed Three Sets of 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 used to make H-Alpha observations of the very low 
excitation planetary nebulae PK024+03D1, PK008-O7D2, and PK002-09D1 in 
order to study its multipolar bubbles and jets.  Comparison of the 
morphology of this young PNe sample with more evolved PNe populations will 
set new constraints on models for the production of jet-like outflows and 
nebular evolution.  The observations were completed as planned, and no 
problems were reported.

    1.17 Completed WF/PC-2 8552 (The Crab Synchrotron Nebula: Short Version)

        The WF/PC-2 was used to obtain observations to accompany Chandra 
observations of the inner Crab synchrotron nebula.  The proposal completed 
nominally.

    1.18 Completed STIS/CCD/MA1 8284 (Deep STIS Observations of BALQSO PG 
0946+301)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
study AGN outflows to determine of the ionization equilibrium and 
abundances(IEA) in broad absorption line {BAL} QSOs.  In the last few years 
it has become clear that partial coverage of the continuum source and 
saturation are common in BALs, and these frustrate attempts to determine 
the IEA from available HST data because of limitations imposed by the S/N 
ratio and spectral coverage. We will re-observe the most suitable BAL IEA 
target: PG 0946+301.  The observation completed with no reported problems.

    1.19 Completed Two Sets of WF/PC-2 8436 (POMS Test Proposal: WFII 
Backup Parallel Archive Proposal II)

        The WF/PC-2 was used to make archive observations parallel to the 
prime science observations as part of a POMS test proposal.  This is a POMS 
test proposal designed to simulate scientific plans.  The observations were 
completed as planned, and no anomalies were reported.

    1.20 Completed STIS/CCD/MA1 8287 (A Search For Transparent Lines of 
Sight With Intergalactic He-II Absorption Towards 26 Bright z > 2.9 Quasars)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
make He-II absorption line observations of quasar HS1244+314.  The aim is 
to identify more suitable bright objects for detailed studies of 
intergalactic He-II absorption at a redshift of Z <2.9 and >3.2 .  A 
wavelength calibration observation was also taken.  The observations were 
executed as scheduled, and no anomalies were noted.

    1.21 Completed STIS/CCD 8228 (The Black Hole Versus Bulge Mass 
Relationship in Spiral Galaxies)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of the galaxy NGC-4030 in order to study the black hole versus 
bulge mass relationship in spiral galaxies.  A wavelength calibration image 
was also taken.  The observations were executed as scheduled, and no 
anomalies were noted.

    1.22 Completed Two Sets of STIS/CCD 8176 (Confirmation and 
Characterization of Brown Dwarfs and Giant Planets from NICMOS 7226/7227)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
confirmation and characterization observations of object HD177996B.  This 
is a continuation of NICMOS 7226/7227 using the STIS.  A systematic search 
for giant planet and brown dwarf companions to stars in the solar 
neighborhood was the cornerstone of the NICMOS IDT's Environments of Nearby 
Stars {EONS} program.  The observations were completed as planned, and no 
anomalies were reported.

    1.23 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.

    1.24 Completed STIS/CCD/MA1/MA2 8029 (Intrinsic Absorption Lines in 
Seyfert 1 Galaxies)

        The Space Telescope Imaging Spectrograph (CCD, MA1, and MA2) was 
used to study the origin of the intrinsic absorption lines in the UV 
spectra of Seyfert 1 galaxies and their connection to the emission-line and 
X-ray absorption regions.  The observations completed nominally.

    1.25 Completed STIS/CCD 8065 (Comparison of Protoplanetary Disks)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of the protoplanetary disk around star HD31293.  Multiple roll 
angles were used to minimize systematic errors and image artifacts.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.26 Completed STIS/CCD/MA2 8423 (FASTEX --- Faint Standard Extension)

        The Space Telescope Imaging Spectrograph (CCD and MA2) was used to 
investigate fainter standard stars which are needed for the flux 
calibration of COS and for the prism modes on ACS.  The proposal completed 
with no noted anomalies.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions: 26
Successful: 26

  Scheduled Re-acquisitions: 21
Successful: 21

    2.2 FHST Updates:
Scheduled: 59
Successful: 57

        As documented in HSTAR 7524, two full maneuver updates scheduled 
for 057/0322Z and 057/0325Z failed due to tracker 1.  A subsequent map 
showed only minimal errors.

    2.3 Operations Notes:

        Servicing Mission Observatory Verification (SMOV) continues.

        Real-time operations returned to CCS string "A" at 056/1325Z.  That 
string was configured with the 3.1.2.10 patch.

        Per ROP SR-8A, the AER was configured at 058/2230Z to avoid 
possible engineering data loss.

        SSA transmitter #1 was turned on and off at 059/0441Z per ROP IC-2.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of SMOV and normal science observations and calibrations.

/CAW