HUBBLE SPACE TELESCOPE

   DAILY REPORT #2935

PERIOD COVERED:  0000Z (UTC) 08/13/01 - 0000Z (UTC) 08/14/01

Daily Status Report as of 226/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed STIS/CCD 8907 (Spectroscopic Flats C10)

        The Space Telescope Imaging Spectrograph (CCD) was used to obtain 
CCD flats in the spectroscopic mode.  There were no reported problems.

    1.2 Completed Three Sets of WF/PC-2 8828 (Cycle 9 Supplemental Darks pt3/3)

        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 proposal completed with no reported problems.

    1.3 Completed Two Sets of 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.

    1.4 Completed Five 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 Two Sets of STIS/CCD 8864 (CCD Dark Monitor-Part 2)

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

    1.6 Completed Two Sets of WF/PC-2 8935 (Cycle 10 Standard Darks)

        The WF/PC-2 was used to obtain dark frames every week in order to 
provide data for the ongoing calibration of the CCD dark current rate, and 
to monitor and characterize the evolution of hot pixels.  Over an extended 
period these data will also provide a monitor of radiation damage to the 
CCDs.  The proposal completed with no reported problems.

    1.7 Completed Seven Sets of STIS/CCD 8808 (POMS Test Proposal: STIS 
Non-Scripted Parallel Proposal Continuation III)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
non-scripted, parallel observations as part of a POMS test proposal.  As 
described in 2.1 and HSTAR 8302, the acquisition for the final iteration of 
this proposal defaulted to fine lock backup on one FGS only, possibly 
affecting one observation.  Otherwise, the observations completed with no 
further anomalous activity.

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

         The WF/PC-s 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.

    1.9 Completed STIS/CCD 8865 (Bias Monitor-Part 2)

        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 anomalous activity.

    1.10 Completed STIS/CCD 8909 (CCD Dispersion Solutions)

        The Space Telescope Imaging Spectrograph (CCD) was used to perform 
wavelength dispersion solutions that are determined on a yearly basis as 
part of a long-term monitoring program and to obtain deep engineering 
wavecals for all CCD gratings at several wavelength centers.  The proposal 
completed with no reported problems.

    1.11 Completed Four Sets of WF/PC-2 8935 (Cycle 10 Standard Darks)

        The WF/PC-2 was used to obtain dark frames every week in order to 
provide data for the ongoing calibration of the CCD dark current rate, and 
to monitor and characterize the evolution of hot pixels.  Over an extended 
period these data will also provide a monitor of radiation damage to the 
CCDs.  As described in HSTAR 8301 and 2.1, the acquisition for the second 
iteration of this proposal defaulted to fine lock backup on one FGS only, 
possibly affecting one observation.  Otherwise, the proposal completed with 
no other reported problems.

    1.12 Completed STIS/CCD/MA1 8956 (Pre-SM Calibration)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used in 
an exercise to prepare for the SMOV-3B program.  Prior to SMOV3B, one 
iteration of proposal 8960 {Jitter Test} for WD 2126+734 will be 
performed.  Also one iteration of 8961 {End of BEA Test} for each new flux 
standard {WD 2126+734, WD 0320-539, WD 0710+741, and WD 0214+568} needed to 
completely cover all possible Bright Earth Avoidance {BEA} dates will be 
exercised.  Finally, one extra standard is added {WD 1407-475} to fill the 
gap around June when WD 0214+568 is too close to the Sun.  This iteration 
of the proposal completed with no reported problems.

    1.13 Completed Three Sets of STIS/MA1/MA2 8843 (Cycle 9 MAMA Dark 
Measurements)

        The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to 
perform the routine monitoring of the MAMA detector dark noise.  The 
proposal completed nominally.

    1.14 Completed WF/PC-2 8939 (Cycle 10 Internal Monitor)

        The WF/PC-2 was used to calibrate the internal monitor, to be run 
weekly to monitor the health of the cameras.  No problems were encountered.

    1.15 Completed Two Sets of WF/PC-2/STIS/MA1 8675 (The Massive Star 
Content of NGC 6822)

        The WF/PC-2 and the Space Telescope Imaging Spectrograph (MA1) were 
used to characterize the young, coeval stellar population discovered with 
WFPC2 multiband imaging in a NGC6822 star-forming region, with follow-up 
spectroscopy of the massive star candidates.  The proposal completed with 
no reported problems.

    1.16 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.

    1.17 Completed STIS/CCD/MA1 9051 (Identifying Damped Lyman-alpha 
Galaxies at z~1)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
look for samped Lyman-alpha absorption systems that contain the bulk of the 
neutral gas in the Universe in the redshift range z = 0.5 - 5 ,yet the 
nature of the galaxies responsible for the absorption is not well 
understood.  Only recently have observers found more than a handful of 
damped absorbers at redshifts z < 1.5.  Using the FIRST Bright Quasar 
Survey {FBQS}, with over a 1000 quasars, the proposers have undertaken a 
survey to build a complete picture of he nature of the galaxies responsible 
for damped Lyman-alpha absorption systems at z~1 and to double the sample 
size at this redshift.  No problems were encountered.

    1.18 Completed STIS/CCD 9165 (A Damped LyAlpha System in a Close 
Separation Lens)

        The Space Telescope Imaging Spectrograph (CCD) observed damped 
LyAlpha absorption systems that hold key information about galaxy formation 
and chemical evolution of the universe.  It is proposed to conduct 
spatially resolved absorption line spectroscopy in the only presently known 
DLA system with two independent lines of sight.  This object was discovered 
recently by us in the course of an ongoing HST snapshot survey as a double 
QSO at z=1.57 with an image separation of only 0.63 arcsec, almost 
certainly due to gravitational lensing.  The ground-based composite optical 
spectrum shows an exceptionally strong Mg II+ Fe II absorption system at 
z=0.93, which clearly indicates the presence of a damped LyAlpha absorber 
{DLA} in the line of sight.  The observations ended nominally.

    1.19 Completed FGS/1 9169 (An Interferometric Harvest of Double 
Degenerates)

        Fine Guidance Sensor #1R was used to observe the white dwarf mass 
and age distributions that hold clues to the star formation history of our 
Galaxy and the age of the disk.  No problems were reported.

    1.20 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.  As described in 2.1 
and HSTAR 8302, the acquisition for this proposal defaulted to fine lock 
backup on one FGS only, possibly affecting two observations.  Otherwise, 
there were no other reported problems.

    1.21 Completed 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.  As described in 2.1 and HSTAR 8302, the acquisition for 
this proposal defaulted to fine lock backup on one FGS only, possibly 
affecting one observation.  Otherwise, the observations were completed as 
planned, and no further anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions: 12
Successful: 12

        Per HSTAR 8301, the acquisition at 225/152216Z defaulted to fine 
lock backup on FGS-1 only.  The proposal detailed in 1.11 may have been 
affected.

        The acquisition at 225/223920Z also defaulted to fine lock backup, 
this time on FGS-2 when the scan step limit was exceeded on FGS-1.  The 
proposals described in 1.7, 1.20 and 1.21 may have been affected.
  Scheduled Re-acquisitions:  4
Successful:  4

    2.2 FHST Updates:
Scheduled: 33
Successful: 33

    2.3 Operations Notes:

        Using ROP SR-1A, the SSR EDAC error counter was cleared three times.

        The ephemeris table was uplinked at 226/0203Z per ROP DF-07A.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW