HUBBLE SPACE TELESCOPE

       DAILY REPORT #2973

PERIOD COVERED:  0000Z (UTC) 10/09/01 - 0000Z (UTC) 10/10/01

Daily Status Report as of 283/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed Four 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.

    1.2 Completed Three 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.

    1.3 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.

    1.4 Completed FGS//1 9308 (Verifying FGS FSW on Faint Targets)

        Fine Guidance Sensor #1 was used to verify new FGS flight software 
that has been implemented to facilitate the reliable acquisition and 
tracking of faint stars in POS mode and for the reliable positioning of the 
scan path in Trans mode.  There were no problems.

    1.5 Completed STIS/CCD/MA1/MA2 8487 (High Resolution Observations of HD 
195965)

        The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was 
used to observe HD 195965 at high resolution to determine the velocity 
structure and abundances of the interstellar gas along the sight line.  The 
object has been observed with FUSE, and the investigators seek understand 
the detailed nature of the ISM to gain insight into the D/H ratio along the 
sight line.  No problems were noted.

    1.6 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.

    1.7 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.

    1.8 Completed Two Sets of 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.

    1.9 Completed 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.  As described in 2.1 and HSTAR 8363, the acquisition for this 
proposal defaulted to fine lock backup on one FGS only, possibly affecting 
the proposal.  Otherwise, the proposal completed uneventfully.

    1.10 Completed WF/PC-2 8882 (Chandra and HST Observations of the 
Brightest Cluster Lenses)

        The WF/PC-2 was used in conjunction with Chandra to perform 
observations of the four X-ray brightest, cooling-flow clusters with bright 
gravitational arcs, newly identified from the ROSAT XBACS/BCS lensing 
study.  As described in 2.1 and HSTAR 8363, the acquisition for this 
proposal defaulted to fine lock backup on one FGS only, possibly affecting 
the proposal.  Otherwise, the observations completed with no other reported 
problems.

    1.11 Completed WF/PC-2 8815 (Cycle 9 Earth Flats)

        The WF/PC-2 was used to monitor flatfield stability.  This proposal 
obtains sequences of Earth streak flats to construct high quality flat 
fields for the WF/PC-2 filter set.  These flat fields will allow mapping of 
the OTA illumination pattern and will be used in conjunction with previous 
internal and external flats to generate new pipeline superflats.  As 
described in 2.1 and HSTAR 8363, the acquisition for this proposal 
defaulted to fine lock backup on one FGS only, possibly affecting the 
proposal.  Otherwise, the proposal completed nominally.

    1.12 Completed WF/PC-2 9057 (Host Galaxies of Obscured QSOs Identified 
by 2MASS)

        The WF/PC-2 was used to perform a snapshot survey of red QSOs 
discovered in The Two Micron All Sky Survey {2MASS} to investigate the 
detailed properties of their host galaxies.  This large, possibly dominant, 
population of QSOs in the local universe has been previously overlooked 
because reddening by {intrinsic} obscuration along our line of sight causes 
their colors to be too red for identification by traditional "UV- excess" 
techniques.  Their near-IR colors are similar to PG- type {UV-excess} QSOs, 
but it is far from certain whether they are indeed from the same parent 
population or represent a completely new class of QSO.  There were no 
reported problems.

    1.13 Completed STIS/CCD 9186 (D/H in Lyman Limit Absorbers with Simple 
Velocity Structure)

        The Space Telescope Imaging Spectrograph (CCD) was used to observe 
the deuterium abundance in QSO absorbers that provides a direct measurement 
of the baryonic density of the Universe.  This proposal will obtain new 
high resolution data of two carefully selected, intermediate redshift 
absorption systems.  No problems were encountered.

    1.14 Completed WF/PC-2 8936 (Cycle 10 Supplemental Darks Pt1/3)

        The WF/PC-2 was used to perform a dark calibration program that 
obtains three dark frames every day to provide data for monitoring and 
characterizing the evolution of hot pixels.  The proposal completed with no 
reported problems.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions:  5
Successful:  5

        Per HSTAR 8363, the acquisition at 282/095014Z defaulted to fine 
lock backup on FGS-2 only when the scan step limit was exceeded on 
FGS-3.  The proposals detailed in 1.9, 1.10, and 1.11 may have been affected.
  Scheduled Re-acquisitions: 10
Successful: 10

    2.2 FHST Updates:
Scheduled: 11
Successful: 11

    2.3 Operations Notes:

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

        A TTR was written when there was a required re-transmit at 
282/2029Z during a NSSC-1 load.  Accordingly, the SI C&DH errors were reset 
at 282/2033Z using ROP NS-5.

        The STIS MCE-2 reset at 283/020944Z while the low voltage was on 
and while inside an SAA interval.  The SIS flight software error counter 
was reset at 283/0219Z as directed by ROP NS-12.  MAMA-2 was recovered at 
283/0441Z, the time of the next high voltage on commanding, via normal SMS 
commanding.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW