Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_00/hst_status_10_05_00 Дата изменения: Thu Oct 5 15:04:05 2000 Дата индексирования: Sun Dec 23 10:17:06 2007 Кодировка: Поисковые слова: moon

HUBBLE SPACE TELESCOPE

DAILY REPORT #2722

PERIOD COVERED: 0000Z (UTC) 10/04/00 - 0000Z (UTC) 10/05/00

Daily Status Report as of 279/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 Completed STIS/CCD/MA2 7316 (Saturn's Satellites: Alteration of the
Surface by Ion Irradiation on Enceladus and Tethys)

The Space Telescope Imaging Spectrograph (CCD and MA2) was used to
make observations of Saturn's moon Tethys. Saturn's medium-sized icy
satellites display a diverse range of surface alteration caused by one or
more external processes. A wavelength calibration image was also
taken. The observations were completed as planned, and no anomalies were
noted.

1.2 Completed Two Sets of 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.

1.3 Completed STIS/CCD 8631 (Bright Quasar Close Lensing Search II)

The Space Telescope Imaging Spectrograph (CCD) was used to expand
the Cycle 8 second generation HST snapshot survey of bright quasars,
optimized to find lenses with component image separations < 1". The
observations completed nominally.

1.4 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.

1.5 Completed STIS/CCD 8838 (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. The proposal completed nominally.

1.6 Completed STIS/CCD 8870 (POMS Test Proposal: STIS Non-Scripted
Parallel Proposal Continuation IV)

The Space Telescope Imaging Spectrograph (CCD) was used to make
non-scripted, parallel observations as part of a POMS test proposal. The
observations completed with no anomalous activity.

1.7 Completed STIS/CCD 8228 (The Black Hole Versus Bulge Mass
Relationship in Spiral Galaxies)

The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the galaxy NGC-2964 in order to study the black hole versus
bulge mass relationship in spiral galaxies. A wavelength calibration image
was also taken. The observations were executed as scheduled, and no
anomalies were noted.

1.8 Completed STIS/CCD 8700 (A STIS Spectroscopic Snapshot Survey of
3CR Radio Galaxies : The Nature of the Unresolved Nuclei)

The Space Telescope Imaging Spectrograph (CCD) was used to perform
STIS snapshot long-slit spectroscopy of these nuclei over 2900- 10300 AA to
classify them {QSO, NLRG, BLRG, BL Lac, ldots} and establish their AGN
characteristics down to the lowest nuclear luminosities, while still within
powerful 3C radio galaxies. The primary goals are : {1} to test
unification schemes by identifying previously undetected signatures of
low-level AGN/QSO activity in their spectra in the form of weak, broad
emission lines, featureless continua, and UV excess, {2} to constrain the
FR I/BL Lac connection by measuring the relative contribution of thermal
{starburst}, non-thermal {optical synchrotron}, and line emission, and {3}
to perform line and continuum diagnostics to determine the dominant
ionization mechanisms in the circumnuclear regions {tenths of arcseconds}
and the role of dust extinction in the NLRGs and BLRGs in the form of
geometrically thick or thin tori and foreground dust. The proposal
completed as planned, with no reported anomalies.

1.9 Completed STIS/CCD/MA1 8695 (The Nature and Distribution of O VI
Absorbers in the Vicinity of Galaxies)

The Space Telescope Imaging Spectrograph (CCD and MA1) was to study
PG1259+593 with the E140M echelle mode to substantially improve the
statistical base of observed O VI absorbers {including weak lines} for
comparison with the cosmological models and to constrain the physical
conditions and abundances in these systems and their relationships with
galaxies. With these observations we will {1} measure the number of O VI
absorbers per unit redshift {dN/dz} with a limiting equivalent width of
W_Lambda ~25 mAngstrom , {2} examine whether the O VI absorption arises in
photoionized, collisionally ionized, or multiphase gas, {3} estimate the
absorber metallicities, and {4} study the dependence of the absorber
properties on the proximity of luminous galaxies. The observations
completed nominally.

1.10 Completed STIS/MA2 8843 (Cycle 9 MAMA Dark Measurements)

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

********************************************

The following scheduled WF/PC-2 proposals were not executed since the
instrument was placed in safe at approximately 276/114752Z.

Three Sets of WF/PC-2 8826 (Cycle 9 Supplemental Darks pt 1)
WF/PC-2 8816 (Cycle 9 UV Earthflats)
WF/PC-2 8656 (The Hydrogen-Burning Limit in the Globular Cluster NGC 6397)
WF/PC-2 8822 (Decontaminations and Associated Observations Pt. 1/4)
WF/PC-2 8544 (POMS Test Proposal: WFII Backup Parallel Archive Proposal II)

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:
Scheduled Acquisitions: 8
Successful: 8

Scheduled Re-acquisitions: 7
Successful: 7

2.2 FHST Updates:
Scheduled: 12
Successful: 12

2.3 Operations Notes:

HST operations are being conducted from the Science Institute
Mission Operations Room (SIMOR).

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

Per ROP NS-3, the NSSC-1 status buffer was dumped three times.

SI C&DH errors were reset on four occasions as directed by ROP NS-5.

A TTR was written when a command re-transmit was required at
278/1935Z while a NSSC-1 load was being uplinked.

The revised computer memory loads that included provisions for the
recovery of WF/PC-2 were received in the SIMOR at 278/2315Z, and
eventually approved by all parties. The loads were uplinked to the HST as
planned. WF/PC-2 recovery is scheduled to begin at 279/1800Z, with the
WF/PC-2 decontamination to run from approximately 280/0700Z until
approximately 280/2000Z. The first WF/PC-2 shutter usage is to begin at
approximately 280/2300Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations,
including those of WF/PC-2.

/CAW