Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_00/hst_status_11_16_00 Дата изменения: Thu Nov 16 15:00:52 2000 Дата индексирования: Sun Dec 23 10:17:51 2007 Кодировка: Поисковые слова: uv

HUBBLE SPACE TELESCOPE

DAILY REPORT #2751

PERIOD COVERED: 0000Z (UTC) 11/15/00 - 0000Z (UTC) 11/16/00

Daily Status Report as of 321/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 Completed STIS/MA1 8721 (An UV Imaging Survey of IR-Bright Star-
Forming Galaxies)

The Space Telescope Imaging Spectrograph (MA1) was used to carry
out a UV {~1, 600 Angstrom} snapshot imaging survey of all the actively
star-forming galaxies detected by ISO at Lambda>170 Mum and closer than
cz=9000 km/s. The sample covers a large region in the parameter's space of
morphology, luminosity, metallicity, and star formation intensity. There
were no reported anomalies.

1.2 Completed Four Sets of WF/PC-2 8805 (POMS Test Proposal: WFII
Parallel Archive Proposal Continuation)

The WF/PC-2 was used to perform a generic target version of the
WFPC2 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 proposal completed with no reported
problems.

1.3 Completed Two 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.

1.4 Completed Two Sets of WF/PC-2/STIS/CCD 8641 (Testing the
Accelerating Universe)

The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) were
used to observe Type Ia supernovae which provide evidence for an
accelerating universe: an extraordinary result that needs to be rigorously
tested. The observations completed with no reported problems.

1.5 Completed Three Sets of WF/PC-2 8816 (Cycle 9 UV Earthflats)

The WF/PC-2 was used to obtain sequences of earth streak flats to
improve the quality of pipeline flat fields for the WFPC2 UV filter set and
in order to monitor flat field stability. There were no reported problems.

1.6 Completed Three Sets of 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. The
proposal completed nominally.

1.7 Completed WF/PC-2 8290 (Weather, Moons, and Orbit of the Brown
Dwarf Gl 229B)

The WF/PC-2 was used to make observations of the brown dwarf star
HD42581 (a.k.a., GI 229B). Gl 229B is the only unambiguous brown
dwarf. It can be imaged with high astrometric and photometric accuracy
only by HST. The observations were executed as scheduled, and no anomalies
were noted.

1.8 Completed Two Sets of STIS/CCD 8562 (Probing the Large Scale
Structure: Cosmic Shear Observations)

The Space Telescope Imaging Spectrograph (CCD) was used to probe
the distortion of light bundles from distant galaxies, looking at the
statistical properties of the intervening inhomogeneous {dark} matter
distribution. The proposal completed nominally.

1.9 Completed WF/PC-2 8701 (Multiplicity among Very-Low Mass Stars and
Brown Dwarfs in Alpha Persei and the Pleiades)

The WF/PC-2 was used to observe open clusters which provide
excellent hunting grounds for brown dwarf {BD} searches. The AlphaPer and
Pleiades clusters are young, nearby and have low extinction. They are
considered to be the best-suited places to study the Substellar Mass. A
dozen of cool faint AlphaPer and Pleiades members have been confirmed as
``bona-fide'' BDs with the lithium test. By comparison with those, about
60 very good cluster BD candidates are currently known. The Pleiades SMF
obtained using the most recent deep large CCD surveys indicates that BDs
are quite numerous but do not make a significant contribution to the total
cluster mass. The observations completed with no reported problems.

1.10 Completed STIS/CCD 8837 (CCD Dark Monitor-Part 1)

The Space Telescope Imaging Spectrograph (CCD) was used to monitor
the darks. The proposal completed with no reported problems.

1.11 Completed WF/PC-2 8826 (Cycle 9 Supplemental Darks pt 1)

The WF/PC-2 was used to perform a T dark calibration program that
obtains three dark frames every day in order to provide data for monitoring
and characterizing the evolution of hot pixels. There were no reported
anomalies.

2.0 FLIGHT OPERATIONS SUMMARY:

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

Scheduled Re-acquisitions: 7
Successful: 7

2.2 FHST Updates:
Scheduled: 16
Successful: 16

2.3 Operations Notes:

Using ROP SR-1A, the correctable SSR EDAC errors were cleared on
three occasions.

The engineering status buffer limits were adjusted twice, per ROP
DF-18A.

In support of today's flight software (FSW) 1.4A installation, a
RAM memory base line dump was performed at 320/1700Z. An EEPROM memory
baseline dump occurred at 320/2020Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

The FSW 1.4A RAM and EEPROM installation is scheduled today.

Continuation of normal science observations and calibrations.

/CAW