HUBBLE SPACE TELESCOPE

       DAILY REPORT #3042

PERIOD COVERED:  0000Z (UTC) 01/24/02 - 0000Z (UTC) 01/25/02

Daily Status Report as of 025/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 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.

    1.2 Completed 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.

    1.3 Completed Three Sets of WF/PC-2 8937 (Cycle 9 Supplemental Darks pt2/3)

        The WF/PC-2 was used obtain three dark frames every day to provide 
data for monitoring and characterizing the evolution of hot pixels.  No 
problems were encountered.

    1.4 Completed Two Sets of STIS/MA2 9573 (NUV-MAMA Daily Dark Monitor)

        The Space Telescope Imaging Spectrograph (MA2) was used to perform 
daily monitoring of the NUV MAMA detector dark noise in order to monitor 
the effects of thermal changes on the NUV dark rate.  No problems occurred.

    1.5 Completed Three Sets of STIS/CCD 9317 (Pure Parallel Imaging 
Program: Cycle 10)

        The Space Telescope Imaging Spectrograph (CCD) was used to perform 
the default archival pure parallel program for STIS during cycle 10.  There 
were no reported problems.

    1.6 Completed Four Sets of WF/PC-2 9318 (POMS Test Proposal: WFII 
Parallel Archive Proposal Continuation)

        The WF/PC-2 was used to perform the generic target version of the 
WFPC2 Archival Pure Parallel program.  The program was used to take 
parallel images of random areas of the sky, following the recommendations 
of the Parallels Working Group.  There were no reported problems.

    1.7 Completed Two Sets of FGS/1 9407 (Astrometry of a Star Hosting an 
Extrasolar Planet: The Mass of Upsilon Andromedae)

        Fine Guidance Sensor #1 was used to determine the astrometric 
elements {perturbation orbit semimajor axis and inclination} produced by 
the outermost extra-solar planet orbiting the F8V star Upsilon 
Andromedae.  These observations will permit us to determine the actual mass 
of the planet by providing the presently unknown sin i factor intrinsic to 
the radial velocity method which discovered this object.  An inclination, i 
= 30degrees, within the range of one very low precision determination using 
reanalyzed HIPPARCOS intermediate data products, would produce the observed 
radial velocity amplitude, K = 66 ms with a companion mass of ~8 M_Jupiter. 
Such a mass would induce in Upsilon Andromedae a perturbation semi-major 
axis, Alpha = 0arcs0012. The proposed observations will yield a planetary 
mass, rather than, as previous investigations have done, only suggest a 
planetary mass companion.  The proposal completed nominally.

    1.8 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.

    1.9 Completed STIS/CCD 8669 (Merger-Driven Evolution Of Galactic 
Nuclei: Observations Of The Toomre Sequence)

        The Space Telescope Imaging Spectrograph (CCD) was used to observe 
galaxy mergers that are believed responsible for triggering starburst and 
AGN activity in galaxies, and even perhaps transforming spiral galaxies 
into ellipticals.  The proposal completed nominally.

    1.10 Completed Two Sets of 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.

    1.11 Completed FGS/1 9034 (The Masses and Luminosities of Population II 
Stars)

        Fine Guidance Sensor #1 was used to observe the mass-luminosity 
relation {MLR} of Population II stars of which very little is currently 
known.  With the advent of the Hipparcos Catalogue, improved distances to 
many spectroscopic binaries known to be Pop II systems are now 
available.  After surveying the literature and making reasonable estimates 
of the secondary masses, we find 13 systems whose minimum separation should 
be larger than the resolution limit of FGS #1.  The observations completed 
nominally

    1.12 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.  The proposal completed uneventfully

    1.13 Completed STIS/MA1/MA2 9120 (Planetary Nebulae In The LMC: A Study 
On Stellar Evolution And Populations)

        The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to 
investigate the final phase of the evolution of low- and intermediate-mass 
stars, the Planetary Nebula {PN} ejection that is thought to provide the 
main source of carbon and nitrogen enrichment in galaxies.  The 
observations completed nominally with no reported problems.

    1.14 Completed WF/PC-2 8932 (Decontaminations and Associated 
Observations Pt. 1/3)

        The WF/PC-2 was used for the monthly WFPC2 decons.  Also included 
are instrument monitors tied to decons: photometric stability check, focus 
monitor, pre- and post-decon internals {bias, intflats, kspots, &and 
darks}, UV throughput check, VISFLAT sweep, and internal UV flat check.  No 
problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
            Scheduled Acquisitions:  7
    Successful:  7

      Scheduled Re-acquisitions:  8
    Successful:  8

    2.2 FHST Updates:
    Scheduled: 18
    Successful: 18

    2.3 Operations Notes:

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

        A TTR was written for a required re-transmit at 025/0738Z during a 
486 load.  The 486 engineering status buffer limit (SESBSLD=4) was adjusted 
at 025/0744Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW