Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_98/hst_status_08_14_98 Дата изменения: Fri Aug 14 16:40:50 1998 Дата индексирования: Sun Dec 23 10:57:23 2007 Кодировка: Поисковые слова: m 31

HUBBLE SPACE TELESCOPE

DAILY REPORT #2187

PERIOD COVERED: 0000Z (UTC) 08/13/98 - 0000Z (UTC) 08/114/98

Daily Status Report as of 226/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed Two Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor --
Cont. to Dec. 98)

The Space Telescope Imaging Spectrograph (CCD) was used to measure
CCD dark current and bias rates for the two supported amplifier settings
{GAIN=1 and GAIN=4} in order to gather data for making superdarks and
superbiases. The data will be used to track the growth of hot pixels on
the CCD in general and within the various target acquisition apertures
specifically. The observations were executed as scheduled, and no
anomalies were noted.

1.2 Completed Two Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental
Darks pt2/3)

The WF/PC-2 was used to make a series of Cycle 7 supplemental
calibration darks. This dark calibration program obtains three dark frames
every day to provide data for monitoring and characterizing the evolution
of hot pixels. The observations were executed as scheduled, and no
anomalies were noted.

1.3 Completed WF/PC-2 7622 (WF/PC-2 Cycle 7 Internal Monitor)

The WF/PC-2 was used to make a set of Cycle 7 internal monitoring
calibration measurements. A variety of internal exposures are obtained in
order to provide a monitor of the integrity of the CCD camera electronics
in both bays {gain 7 and gain 15}, a test for quantum efficiency in the
CCDs, and a monitor for possible buildup of contaminants on the CCD
windows. A bias calibration and an internal flat calibration image were
also taken. The observations were executed as scheduled, and no anomalies
were noted.

1.4 Completed NIC/1/2/3 7831 (NICMOS Study of Nova Shells)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the nova shock shell around nova QV-Vul. The angular
expansion rates and spatial distribution of the ejecta in both the
continuum and emission lines of ionized gas will be determined. The
observations were executed as scheduled, and no anomalies were noted.

1.5 Completed FGS 7681 (FGS #3 Red Transfer Function Reference Calibration)

The Fine Guidance Sensors (FGS #3, the astrometer) were used to make
observations of SAO185689 in order to perform a red transfer function
reference calibration through the PUPIL, CLEAR and NEUTRAL DENSITY filters
at the center of the FGS #3 field of view (FOV). The observations were
completed as planned, and no anomalies were reported.

1.6 Completed Two Sets of WF/PC-2 7909 (POMS Test Proposal: WF II
Parallel Archive Proposal)

The WF/PC-2 was used to make parallel observations as part of the
POMS test proposal. This test proposal is designed to simulate scientific
plans. The observations were completed as planned, and no problems were
reported.

1.7 Completed Four Sets of STIS/CCD 8062 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

The Space Telescope Imaging Spectrograph (CCD) was used to make
high galactic latitude observations take in parallel with the prime science
observations. The observations were completed as planned, and no problems
were reported.

1.8 Completed NIC/2/3 7907 (NICMOS Pure Parallel Winter 97-98)

The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel spectrographic observations of sky regions when another
instrument is prime. The observations were completed as planned, and no
anomalies were reported.

1.9 Completed NIC/2/3 7453 (The SBF Hubble Diagram)

The Near Infrared Camera (Camera Two and Three) was used to make
deep NICMOS observations of galactic cluster Abell-3656 to determine its
distance using the surface brightness fluctuation {SBF} method. HST is
essential for its high spatial resolution which makes it possible to detect
and remove globular clusters and background galaxies that contaminate the
SBF measurement. The observations were executed as scheduled, and no
anomalies were noted.

1.10 Completed NIC/1/2/3 7826 (Near-IR Photometry of M-31's Metal-Rich
Globular Clusters)

The Near Infrared Camera (Cameras One, Two and Three) were used to
make observations of the metal-rich globular cluster G174 in galaxy
M-31-G174. The high metallicities of the program clusters will make these
observations of particular interest for furthering our understanding of the
evolution of metal rich stars, and for the population synthesis models
meant to study the stellar content of distant, unresolvable bulges and
elliptical galaxies. The observations were executed as scheduled, and no
anomalies were noted.

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

The WF/PC-2 was used to make observations in parallel with the prime
science observations. The parallel opportunities available with WF/PC-2 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. The observations were
completed as planned, and no anomalies were reported.

1.12 Completed STIS/CCD 8064 (POMS Test Proposal: STIS Non-Scripted
Parallel Proposal - Backup)

The Space Telescope Imaging Spectrograph (CCD) was used to conduct a
non-scripted parallel POMS test. The observations were completed as
scheduled, and no problems were reported.

1.13 Completed WF/PC-2/STIS/CCD/NIC/1/2/3 7307 (The Formation and
Evolution of Rich Star Clusters in the LMC)

The WF/PC-2, the Space Telescope Imaging Spectrograph (CCD), and the
Near Infrared Camera (Cameras One, Two and Three) were used to make
observations of the rich star clusters which are located within the Large
Magellanic Cloud in order to study their formation and evolution. These
observations will help us understand the origin and evolution of rich star
clusters in our own galaxy. The observations were completed as scheduled,
and no anomalies were reported.

1.14 Completed STIS/MA1 7298 (A Snapshot Survey for UV bright Quasars at
redshift below 3)

The Space Telescope Imaging Spectrograph (MA1) was used to make
ultraviolet snapshot observations of the bright quasar CS0609 which has a
redshift (Z) below 3.0. The goal is to find quasars bright enough in the
ultraviolet for spectroscopic follow-up in the range 900 -- 1200 Angstroms.
A wave length calibration image was also taken. The observation were
completed as scheduled, and no anomalies were reported.

1.15 Completed FOC/96 7923 (FOC F/96 Turnon)

The Faint Object Camera (f/96) was used to take an internal flat and
a dark to ensure that the 30-day limit for the FOC is not exceeded. The
observations were executed as scheduled, and no anomalies were noted.

1.16 Completed NIC/1/2/3 7875 (Searching for Old Stellar Populations in
Candidate Proto-Spheroidals)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations searching for old stellar populations in candidate
proto-spheroid SA57-3605. We have compelling evidence from WF/PC-2 images
that these galaxies have optical colors gradients. The near-infrared is
necessary, however, to reveal color gradients large enough to separate
young and old stellar populations. Only NICMOS imaging provides enough
spatial resolution and depth to resolve these gradients. The observations
were completed as planned, and no problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 9
Successful : 9

Scheduled Reacquisitions : 6
Successful : 6

2.2 FHST Updates:

Scheduled : 20
Successful : 20

2.3 Operations Notes:

No HSTARs were reported.

The IP Testing for TDRSS-West was successfully completed at 225/1401Z
through 1452Z (OR 13952). During the event, the STOCC received 4 kbps AN
format telemetry and transmitted 1 NOOP and 11 FIVEBLCK procedures in
COUNTCHECK Mode and 1 NOOP and 15 procedures in the NOVERIFY Mode for a
total of 3436 commands with no problems.

The PRS Release 11.3 Burn-in was started, and will continue though the
week-end.

The NICMOS Suspend RTCS (Multiple TPG reset commanding) patch was
uplinked at 226/1145Z. This included single word patch NICMOS Suspend
sequence from Sequence 8 through Sequence 25.

NASCOM VDS Y2K Compliance was started and continues through the weekend.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.

/DMH