Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_00/hst_status_08_17_00 Дата изменения: Thu Aug 17 14:31:51 2000 Дата индексирования: Sun Dec 23 10:16:05 2007 Кодировка: Поисковые слова: mercury surface

HUBBLE SPACE TELESCOPE

DAILY REPORT #2688

PERIOD COVERED: 0000Z (UTC) 08/16/00 - 0000Z (UTC) 08/17/00

Daily Status Report as of 230/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 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.

1.2 Completed Two Sets of STIS/CCD 8437 (Dark Monitor-Part 2 C8)

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

1.3 Completed Three Sets of STIS/CCD 8852 (Measurement of CCD Window
Ghost in Spectrographic Mode (Ghosties and Ghoulies That Go Bump in the Night))

The Space Telescope Imaging Spectrograph (CCD) was used to observe
the Orion Nebula at its brightest point in Balmer Alpha using the G750M
grating set at 6768A. We use the 0.2X0.2 aperture to define a small source
in the slit plane. Several deep short-slit wavecals to be carried out in
Earth occultation are also included in order to make an explicit comparison
of externals and internals. It has been determined that two sets of faint
ghosts are caused by a window in front of the CCD detector. The ghost
position and shape has been modeled for direct imagery and for
spectrographic mode. We are able to predict the amplitude and shapes of
the ghosts reasonably well for the G430L and G750L modes. The situation is
different with M mode ghosts. These appear significantly different from the
L mode ghosts in prelaunch laboratory data. The proposal completed nominallly.

1.4 Completed Two 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. The proposal completed with no reported problems.

1.5 Completed WF/PC-2/STIS/CCD 8642 (Completed Deep Imaging of the
Probable Einstein Ring 1517+656)

The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) was
used to obtain a deep STIS/CCD + F28X50LP image to map the detailed
structure of the arcs, and WFPC2 F555W and F814W images to measure their
colors. A short WFPC2 F702W snapshot image of the BL Lac object 1517+656,
taken earlier, has revealed three surrounding arcs, subsequently confirmed
by a longer NOT observation, making this a probable new Einstein ring. The
observations completed with no reported problems.

1.6 Completed WF/PC-2 8602 (A Snapshot Survey of the Sites of Recent,
Nearby Supernovae)

The WF/PC-2 was used to conduct a snapshot survey in V and I of the
sites of the nearby SNe, which have precisely known positions, to obtain
high-resolution information on their local environment. The proposal
completed with no reported problems.

1.7 Completed WF/PC-2 8632 (A UV Atlas of Nearby Galaxies)

The WF/PC-2 was used to perform a snapshot survey of local galaxies
at UV wavelengths with the F300W filter. The aim of the project is to
build a reference UV Atlas of normal galaxies, whose optical images are
well known, with the highest possible degree of information, covering all
the morphological types and luminosity classes. The proposal completed
normally.

1.8 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.

1.9 Completed STIS/CCD/MA1 8219 (A Definitive Census of the Cataclysmic
Variable Population in 47 Tuc)

The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
make deep, far-ultraviolet, time-resolved observations of the cataclysmic
variable population in the globular cluster 47 Tuc (a.k.a., NGC-104). A
wavelength calibration image was also taken. The observations were
executed as scheduled, and no anomalies were noted.

1.10 Completed WF/PC-2 8059 (POMS Test Proposal: Targeted Parallel
Archive Proposal)

The WF/PC-2 was used to observe the parallel opportunities
available in the neighborhood of bright galaxies are treated in a slightly
different way from the normal pure parallels. Local Group galaxies offer
the opportunity for a closer look at young stellar
populations. Narrow-band images in F656N can be used both to identify
young stars via their emission lines, and to map the gas distribution in
star-forming regions. The observations completed nominally.

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: 7
Successful: 7

Scheduled Re-acquisitions: 10
Successful: 10

2.2 FHST Updates:
Scheduled: 17
Successful: 17

2.3 Operations Notes:

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

While remaining on CCS string "B" for the entire time, the
operations team returned to the GSFC MOR at 229/1745Z and moved again to
the Science Institute at 230/0930Z.

The engineering status buffer limits were modified at 229/1758Z per
ROP DF-18A.

The SSA transmitter was turned on and off at 22=30/0301Z per ROP IC-2.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.

/CAW