HUBBLE SPACE TELESCOPE

       DAILY REPORT #2980

PERIOD COVERED:  0000Z (UTC) 10/18/01 - 0000Z (UTC) 10/19/01

Daily Status Report as of 292/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed STIS/CCD 9077 (Survey of the LMC Planetary Nebulae)

        The Space telescope Imaging Spectrograph (CCD) was used to perform 
a snapshot survey of all known LMC planetary nebulae {PNe} in order to 
study the co-evolution of the nebulae and their central stars, and to probe 
the chemical enrichment history of the LMC.  There were no reported problems.

    1.2 Completed STIS/CCD/MA2 9116 (Understanding High-Redshift and 
Starburst Galaxies: A UV Spectroscopic Survey of B- Stars in the SMC)

        The Space Telescope Imaging Spectrograph (CCD and MA2) was used to 
construct a high quality spectral library at low metallicity in order to 
synthesize the UV spectra of high redshift star-forming galaxies and nearby 
starbursts.  No problems were reported.

    1.3 Completed Two Sets of WF/PC-2 8059 (POMS Test Proposal: Targeted 
Parallel Archive Proposal)

        The WF/PC-2 was used to observe the parallel opportunities 
available in the neighborhood of bright galaxies are treated in a slightly 
different way from the normal pure parallels.  Local Group galaxies offer 
the opportunity for a closer look at young stellar 
populations.  Narrow-band images in F656N can be used both to identify 
young stars via their emission lines, and to map the gas distribution in 
star-forming regions.  The observations completed nominally.

    1.4 Completed Three Sets of WF/PC-2 9244 (POMS Test Proposal: WFII 
Parallel Archive Proposal Continuation)

        The WF/PC-2 was used to perform a generic target version of the 
Archival Pure Parallel program.  The program will be used to take parallel 
images of random areas of the sky, following the recommendations of the 
Parallels Working Group.  The observations completed with no anomalous 
activity.

    1.5 Completed STIS/MA2 8920 (Cycle 10 MAMA Dark Measurements)

        The Space Telescope Imaging Spectrograph (MA2) was used to perform 
the routine monitoring of the MAMA detector dark noise, and is the primary 
means of checking on health of the MAMA detectors systems through frequent 
monitoring of the background count rate.  The proposal completed with no 
reported anomalous activity.

    1.6 Completed Two Sets of WF/PC-2 9080 (Transition from Non-radiative 
to Radiative Shocks in the Cygnus Loop)

        The WF/PC-2 was used to obtain narrow band HAlpha and O III imaging 
of faint filaments in the northeastern Cygnus Loop that represent the 
location of the primary shock front as it first encounters the ISM.  There 
were no reported problems.

    1.7 Completed Three Sets of STIS/CCD 9285 (POMS Test Proposal: STIS 
Non-scripted Parallel Proposal Continuation III)

        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.

    1.8 Completed Three Sets of WF/PC-2 8941 (Cycle 10 UV Earthflats)

        The WF/PC-2 was used to monitor flat field stability by obtaining 
sequences of earth streak flats to improve the quality of pipeline flat 
fields for the WFPC2 UV filter set.  The proposal had no problems.

    1.9 Completed STIS/CCD 9088 (Next Generation Spectral Library of Stars)

        The Space Telescope Imaging Spectrograph (CCD) was used to produce 
a "Next Generation'' Spectral Library of 600 stars for use in modeling the 
integrated light of galaxies and clusters by using the low dispersion UV 
and optical gratings of STIS.  The library will be roughly equally divided 
among four metallicities, very low {Fe/H < -1.5}, low {-1.5 < Fe/H < -0.5}, 
near-solar {-0.5 < Fe/H < 0.1}, and super-solar {Fe/H > 0.1}, well-sampling 
the entire HR-diagram in each bin.  Such a library will surpass all extant 
compilations and have lasting archival value, well into the Next Generation 
Space Telescope era.  No problems occurred.

    1.10 Completed Two Sets of STIS/CCD 8901 (Dark Monitor-Part 1)

        The Space Telescope Imaging Spectrograph (CCD) was used to monitor 
the darks.  There was no anomalous activity.

    1.11 Completed Two Sets of STIS/CCD 9066 (Closing in on the Hydrogen 
Reionization Edge of the Universe)

        The Space Telescope Imaging Spectrograph (CCD) was used in parallel 
constrain the Hydrogen reionization edge in emission that marks the 
transition from a neutral to a fully ionized IGM at a predicted 
redshifts.  The proposal completed uneventfully.

    1.12 Completed WF/PC-2 9155 (The Cepheid Distance to NGC 1637: A Direct 
Comparison with the EPM Distance to SN 1999em)

        The WF/PC-2 was used to directly compare distances estimated by two 
primary extragalactic distance indicators. The appearance of supernova 
1999em, a bright, extremely well- observed type II plateau event in the 
nearby SBc galaxy NGC 1637 offers the best chance to test the consistency 
of the Expanding Photosphere Method {EPM} of supernova distance 
determination with that derived from Cepheid variable stars.  Although EPM 
distances have been measured to 18 type II supernovae out to 180 Mpc and 
used to determine Hubble's constant independent of the Cepheid distance, 
there have never been any measurements of Cepheids in a galaxy that has 
hosted a normal type II-P supernova, the classic variety of core-collapse 
event to which EPM-derived distances are most robust.  The proposal 
completed nominally.

    1.13 Completed WF/PC-2 8886 (Hubble Heritage Observations of DEM 106)

        The WF/PC-2 was used to perform Hubble Heritage observations of DEM 
L106 in the Large Magellanic Cloud.  There were no reported problems.

    1.14 Completed 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.

    1.15 Completed STIS/CCD 8903 (Bias Monitor - Part 1)

        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.  There were no problems.

    1.16 Completed FGS/1 8897 (Long Term Monitoring of FGS1R in Position Mode)

        Fine Guidance Sensor #1R was used to monitor its long-term 
evolution, presumably due to disorption of water from the instrument's 
graphite epoxy composits.  This manifests principally as a change in the 
plate scale and secondarily as a change in the distortions.  These effects 
are well modeled by adjustments to the rhoA and kA parameters which are 
used to transform the star selector servo angles into FGS {x, y} detector 
space coordinates.  By observing the relative positions of stars in a 
standard cluster at a fixed telescope pointing and orientation, the 
evolution of rhoA and kA can be monitored and calibrated to preserve the 
astrometric integrity of the FGS.  There were no reported problems.

    1.17 Completed Three Sets of STIS/CCD 8906 (Hot Pixel Annealing)

        The Space Telescope Imaging Spectrograph (CCD) was used to measure 
the effectiveness of the CCD hot pixel annealing process by measuring the 
dark current behavior before and after annealing and by searching for any 
window contamination effects.  In addition, CTE performance is examined by 
looking for traps in a low signal level flat.  There were no reported problems.

    1.18 Completed WF/PC-2 9042 (An Archive To Detect The Progenitors Of 
Massive, Core-Collapse Supernovae)

         The WF/PC-2 was used to search for supernovae which have massive 
star progenitors.  The already extensive HST archive and high-resolution 
ground-based images of galaxies within ~20 Mpc enables us to resolve and 
quantify their individual bright stellar content.  As massive, evolved 
stars are the most luminous single objects in a galaxy, the progenitors of 
core-collapse supernovae should be directly detectable on pre-explosion 
images.  One Type II progenitor has been observed this year, and the 
investigators have proposed a short, companion WFPC2 proposal to confirm 
this candidate and identify a second.  The observations completed nominally.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions:  9
Successful:  9

  Scheduled Re-acquisitions:  6
Successful:  6

    2.2 FHST Updates:
Scheduled: 18
Successful: 18

    2.3 Operations Notes:

        The SSR EDAC error counter was cleared three times per ROP SR-1A.

        A TTR was written for a 25-second loss of 32k real-time engineering 
data.

        Using ROP DF-18A, an engineering status buffer limit (SESBSLD) was 
adjusted at 291/1453Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW