HUBBLE SPACE TELESCOPE

   DAILY REPORT #2557

PERIOD COVERED:  0000Z (UTC) 02/09/00 - 0000Z (UTC) 02/10/00

Daily Status Report as of 041/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed Two 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.

    1.2 Completed STIS/MA1/MA2 8144 (UV Spectroscopic Snapshots of FUSE AGN 
Targets)

        The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was 
used to make far ultraviolet spectrographic snapshot observations of the 
FUSE AGN target PG1259+593.  This object is currently scheduled to be 
observed by the Far Ultraviolet Spectroscopic Explorer {FUSE}.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.3 Completed WF/PC-2 8451 (Cycle 8 Photometric Characterization)

        The WF/PC-2 was used to determine if any changes in the zeropoint, 
the spatial dependence of the zeropoint, or contamination rates have 
occurred, by comparing the data with baseline measurements for 
GRW+70D5824.  The proposal completed with no anomalies.

    1.4 Completed 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.

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

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

    1.6 Completed WF/PC-2 8146 (A Search for Binary L-Dwarfs)

        The WF/PC-2 was used to search for close binaries amongst the 
sample of 37 low-temperature L dwarfs, identified primarily in the course 
of the DENIS and 2MASS near-infrared surveys.  The observations completed 
with no reported problems.

    1.7 Completed WF/PC-2/STIS/CCD 8255 (Stellar Populations in the Closest 
Large Low Surface Brightness Galaxy)

        The WF/PC-2 and the Space Telescope Imaging Telescope (CCD) were 
used to observe the closest known large low surface brightness galaxy, UGC 
2302, in order to resolve for the first time the massive stars and tip of 
the red giant branch in such a system.  The proposal completed nominally.

    1.8 Completed WF/PC-2 8325 (Galaxy Evolution in Low-Density 
Environments: WFPC2 Imaging of Poor X-Ray Clusters at z=0.2-0.3)

        The WF/PC-2 was used to obtain high quality morphological 
information on galaxies within 9 X-ray-selected poor clusters at z=0.2-0.3. 
These morphologies will be combined with information on the stellar 
populations of the galaxies from our on-going spectroscopic survey of these 
systems to provide a complete view of the morphological and spectral 
evolution of galaxies within these clusters.   The observations completed 
nominally.

    1.9 Completed Two 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.

    1.10 Completed WF/PC-2 8216 (T Tauri Star Snapshot Survey II. 
Completing the CTTs Sample)

        The WF/PC-2 was used to make observations of the T-Tauri class star 
known as MHO-5 as part of Snapshot Survey II.  This database will be of 
fundamental importance to understanding the nature of planet-forming 
environments and their frequency in the galaxy.  The observations were 
executed as scheduled, and no anomalies were noted.

    1.11 Completed STIS/CCD/MA1 8190 Luminous Infrared Galaxies- 
Superstarbursts or AGN)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
obtain high resolution spectroscopy of four of the nearest `warm' 
ultraluminous infrared galaxies (ULIGs) that were discovered in the IRAS 
database, and for which we have recently obtained WFPC2 images in B, I 
filters.  These objects are thought to represent a critical evolutionary 
link between ULIGs and optically selected QSOs.  The observations completed 
with no reported problems.

    1.12 Completed 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.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions:  6
Successful:  6

        Per HSTAR 7504, the acquisition at 041/001735Z defaulted to fine 
lock backup on FGS-1 only when the scan step limit was exceeded on 
FGS-3.  A subsequent map showed only small attitude errors.  Two proposals, 
both occurring during the period of the next report, may have been 
affected: WF/PC-2 8460 and STIS 8187.
  Scheduled Re-acquisitions: 10
Successful: 10

    2.2 FHST Updates:
Scheduled: 15
Successful: 15

    2.3 Operations Notes:

        Servicing Mission Observatory Verification (SMOV) continues.  The 
operations team is in the STOCC area and is using CCS string "G".  The "A" 
string SAC server "crashed" at 040/1122Z, and cannot return to service 
until ordered parts are received and installed.

        ROP SR-1A was used to clear the SSR EDAC errors once.

        The ESB was dumped and cleared at 040/1527Z per ROP DF-18A.

        The STIS shutter motor current (OSCMTRC) was out-of-limits for one 
telemetry sample at 040/172950Z.  The value of the parameter was 
1.327.  HSTAR 7502 was written.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of SMOV and normal science observations and calibrations.

/CAW