Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_95/hst_status_10_10_95 Дата изменения: Tue Oct 10 16:47:21 1995 Дата индексирования: Sun Dec 23 10:40:26 2007 Кодировка: Поисковые слова: m 31

HUBBLE SPACE TELESCOPE

DAILY REPORT #1492

PERIOD COVERED: 0000Z (UTC) 10/06/95 - 0000Z (UTC) 10/10/95

Daily Status Report as of 283/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed FOC/96 6160 (FOC Cycle 5 UV Throughput Monitoring)

The Faint Object Camera (F/96) was used to make ultraviolet
observations of dwarf standard star BPM16254 and also with the internal
calibration lamp in order monitor the ultraviolet throughput of the
FOC/COSTAR/HST combination. The acquisition at 279/043438Z initially failed
due to the scan step limit being exceeded. The second attempt resulted in
the acquisition failing to fine lock back-up on FGS-1 only. HSTAR 5323 was
written. No other anomalies were noted.

1.2 Completed Two Sets of WF/PC-2 6187 (WF/PC-2 Cycle 5 Calibration: Earth
Flats)

The WF/PC-2 was used to make Earth streak flat calibration images.
These streak flats will be used to produce flat fields, to map the OTA
illumination pattern and, in combination with other data, to produce new
superflats. The observations were completed as planned, and no problems were
reported.

1.3 Completed WF/PC-2 5991 (The Fundamental Plane of Early-Type Galaxies
in X-Ray Clusters at Z=0.0)

The WF/PC-2 was used to make observations of X-Ray galactic cluster
GAL-CLUS-2 in order to measure the scale heights, surface brightness profile,
color distributions and morphology of the cluster. The observations were
completed as planned, and no anomalies were noted.

1.4 Completed FGS and WF/PC-2 6334 (1995 Fall Heptathlon)

The FGSs were used to make observations of standard stars F-SPECT1,
F-SPECT2 and FFGS3 in order to verify the alignments in the focal plane.
Dark calibration images were also taken. At 279/131859Z, SI C&DH status
buffer error 402 occurred, causing the WF/PC Science Data Interface to
disable. HSTAR 5324 was written for this occurrence. The interface was
successfully restored at 279/2026Z, but WF/PC science data was affected. No
other anomalies were reported.

1.5 Completed WF/PC-2 5991 (The Fundamental Plane of Early-Type Galaxies
in X-Ray Clusters at Z=0.0)

The WF/PC-2 was used to make observations of X-Ray galactic cluster
GAL-CLUS-0 in order to measure the scale heights, surface brightness profile,
color distributions and morphology of the cluster. The observations were
completed as planned, and no anomalies were noted.

1.6 Completed GHRS/1 6070 (Interstellar Tin: Probing Galactic S-Process
Element Enrichment)

The High Resolution Spectrograph (Side One) was used to make Echelle A
observations of star HD28771 in order to probe for interstellar tin and to
study the galactic S-process neutron capture of element enrichment. The take
data flag remained down when the FGS acquisition at 279/205600Z failed to
achieve either fine lock or coarse track. HSTAR 5325 was written to document
this event.

1.7 Completed WF/PC-2 5983 (Circumstellar Disks in Young Nebulous
Clusters)
=
The WF/PC-2 was used to make observations of the young nearby nebulous
cluster NGC-2264-3 looking for possible curcumstellar disks (solar nebula
analogs), like the type seen in the Orion Nebula. The observations were
completed as planned, and no problems were reported.

1.8 Completed Two Sets of WF/PC-2 6009 (Jovian Stratospheric and
Tropospheric Circulation and Structure)

The WF/PC-2 was used to make high resolution, multi-filter
observations of the planet Jupiter to study its stratospheric and
tropospheric circulation and structure. This study is being done several
months before and after the Galileo probe enters the atmosphere on Dec. 7,
1995. The observations were completed as scheduled, and no anomalies were
reported.

1.9 Completed FGS 6040 (Ultra-High Angular Resolution of O3 Stars in the
Carina Nebula)

The FGSs were used in the TRANS Mode to make ultra-high resolution
astrometric observations of the O3 class star HD93250 which is located in the
Carina Nebula. This is to determine if this object is a single star or a
multiple star system. The observations were completed as scheduled, and no
anomalies were reported.

1.10 Completed Two Sets of WF/P-2 6254 (GTO Pure Parallel Program - Cycle
5)

The WF/PC-2 was use to make random long exposures of high galactic
fields taken in parallel with the prime science observations to obtain a
random sample of galaxies. The observations were executed as scheduled, and
no anomalies were noted.

1.11 Completed WF/PC-2 6225 (Resolving Dust Around Shell Stars)

The WF/PC-2 was used to make deep image observations of A-class shell
star HR-6123 looking for protoplanetary disks, like that around Beta Pic.
The observations were executed as scheduled, and no anomalies were noted.

1.12 Completed FGS 6036 (Detection and Mass Determination of Low Mass
Companions to nearby M Dwarf)

The FGSs were used in both the POS and TRANS Modes to make astrometric
observations of low mass companions to M class dwarf star GL791 and four
reference stars. This will lead to a mass determination for the stars. The
observations were completed as planned, and no anomalies were noted.

1.13 Completed Two Sets of WF/PC-2 6295 (Imaging the Atmosphere of Titan
and Its Surface)

The WF/PC-2 was used to make ultraviolet and near infrared
observations of Saturn's Largest moon Titan to study its atmosphere and
surface. The observations were taken near Saturn's opposition. During the
first iteration, at 280/095357Z, the FGS acquisition failed to fine lock on
FGS-1 only. HSTAR 5326 covered this event. Otherwise, the observations were
executed as scheduled, and no other anomalies were noted.

1.14 Completed WF/PC-2 5957 (Snapshot of 3CR Radio Galaxies)

The WF/PC-2 was used to make observations for radio galaxy 3C234.0 to
study the morphology of the radio galaxy. The observations were executed as
scheduled, and no anomalies were noted.

1.15 Completed WF/PC-2 5900 (Spectroscopy and Imaging of Starburst Knots
in Wolf-Rayet Galaxies)

The WF/PC-2 was used to make observations of the starbursting regions
of Wolf-Rayet galaxy NGC-1741 using several different filters. These data
will provide constraints on the stellar population models for the
starbursting knot regions. The observations were completed as scheduled, and
no problems were reported.

1.16 Completed WF/PC-2 6311 (The Structure of Nova Shells)

The WF/PC-2 was used to make observations of the shell of recurrent
nova T-Pyxidis. The expansion of the shell, and the size distribution of the
knots in the shell, will be determined. The observations were executed as
scheduled, and no anomalies were noted.

1.17 Completed WF/PC-2 6126 (Evolution of Binary Neutron Stars and Their
White Dwarf Companions)

The WF/PC-2 was used to make observations of binary STAR-1640 (A
neutron star/pulsar and its white dwarf companion). The photometry will be
used to determine the cooling age of the dwarf star. The observations were
executed as scheduled, and no anomalies were reported.

1.18 Completed WF/PC-2 6114 (White Dwarf Distance and Precision Age for
the Globular Cluster 47 Tuc)

The WF/PC-2 was used to make observations of white dwarf star
WD1917-077 which is located in the globular cluster 47 Tuc in order to study
the clusters age and distance. This set of observations will be used to
determine the distance to 47 Tuc, hopefully to an accuracy of better than
10%. The observations were executed as scheduled, and no anomalies were
noted.

1.19 Completed Two Sets of WF/PC-2 5913 (Low Mass Binaries and the
Luminosity Function. )

The WF/PC-2 was used to make observations of the low mass binary star
systems SGP006 and MT004 (a late-type M class dwarf) to study their local
stellar luminosity functions. The observations were executed as scheduled,
and no anomalies were noted.

1.20 Completed GHRS/2 5857 (Is Mixing or Mass Loss the Cause of Decline in
12C/13C)

The High Resolution Spectrograph (Side Two) was used to make
spectrographic observations of the halo star HD211998 to study the ratio of
its 12C/13C Carbon and the abundance of its boron. The results will
influence models of evolution off of the main sequence. The observations
were completed as planned, and no problems were reported.

1.21 Completed GHRS/2 6178 (Composition of Gas in Individual Interstellar
Clouds: Cycle 5 GTO Observations)

The High Resolution Spectrograph (Side Two) was used to make
spectrographic observations of the interstellar gas clouds located in the
line of sight to star HD36486, which is located in the galactic disk. The
observations were executed as scheduled, and no anomalies were noted.

1.22 Completed Two Sets of WF/PC-2 5911 (Massive Star Formation in M-31)

The WF/PC-2 was used to make observations in the northeast spiral arm
of NGC-224 (aka, M-31, The Andromeda Galaxy) looking for indications of
massive star formation. The observations were made using several different
filters. The observations were completed as scheduled, and no anomalies were
reported.

1.23 Completed FOS/RD 6031 (UV Spectroscopy of Two Very C-Poor Halo
Planetary Nebulae)

The Faint Object Spectrograph (Red Side) was used to make ultraviolet
observations of the carbon-poor planetary nebula PK061+41.1. This will make
it possible to learn more about the evolution of low mass stars and the
relationship between the interstellar medium and these stars. The
observations were completed as planned, and no problems were reported.

1.24 Completed WF/PC-2 5971 (HST Medium Deep Survey)

The WF/PC-2 was used to make a long exposure medium deep sky survey
observations at latitudes larger than 10 degrees taken in parallel with the
prime science observations. The observations were executed as scheduled, and
no anomalies were noted

1.25 Completed Four Sets of WF/PC-2 6188 (WF/PC-2 Cycle 5 Calibration:
Dark)

The WF/PC-2 was used to make internal dark calibration images. The
observations were completed as scheduled, and no problems were reported.

1.26 Completed WF/PC-2 5899 (The Central Structure of the Collapsed-Core
Globular Cluster NGC-6283)

The WF/PC-2 was used to make deep image observations of the
collapsed-core region of globular cluster NGC-6293 to study its central
structure. The degree of concentration of the core and of different
components will test theories of dynamical evolution of dense stellar
systems. The observations were executed as scheduled, and no anomalies were
noted.

1.27 Completed S/C 5582 (FOC/48 Monthly Activation (Camera Section Only):
Cycle 4)

This proposal was executed as scheduled, and no anomalies were noted.

1.28 Completed FOS/BL 6316 (FUV Spectroscopy of Io's Atmosphere and
Surface: Cycle 4 Carryover)

The Faint Object Spectrograph (Blue Side) was used to make
spectrographic observations of Jupiter's moon Ganymede as it egresses from
the planet's shadow. The observations were completed as planned, and no
problems were noted.

1.29 Completed WF/PC-2 5996 (The Morphology of Field Galaxies at High
Redshifts)

The WF/PC-2 was used to make observations of several field galaxies
(Field-0431) in order to study their morphologies. The observations were
completed as planned, and no anomalies were reported.

1.30 Completed WF/PC-2 6276 (Peculiar and Interacting Galaxies (WC01):
Cycle 5)

The WF/PC-2 was used to make observations of galaxy APR148. The
spatial resolution afforded by the HST is expected to reveal important facts
concerning the nature of this object. The observations were executed as
scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 27
Successful : 24

The acquisition at 279/043438Z initially failed due to
the scan step limit being exceeded. The second attempt
resulted in the acquisition failing to fine lock back-
up on FGS-1 only. HSTAR 5323 was written.

The FGS acquisition at 279/205600Z failed to achieve
either fine lock or coarse track. HSTAR 5325 was
written to document this event.

At 280/095357Z, the FGS acquisition failed to fine
lock on FGS-1 only, HSTAR 5326 covered this event.


Scheduled Reacquisitions : 27
Successful : 27

2.2 FHST Updates:

Scheduled : 64
Successful : 64

2.3 Operations Notes:

There were some data inversions on day 279 during STGT
operations at STGT. A TTR was written.

At 279/131859Z, SI C&DH status buffer error 402
occurred, causing the WF/PC Science Data Interface
to disable. HSTAR 5324 was written for this
occurrence. The interface was successfully restored
at 279/2026Z, but some WF/PC science data was
affected.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Nothing at this time.

/DMH
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