Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_95/hst_status_07_07_95 Дата изменения: Fri Jul 7 19:00:40 1995 Дата индексирования: Sun Dec 23 10:38:53 2007 Кодировка: Поисковые слова: jupiter's moons

HUBBLE SPACE TELESCOPE

DAILY REPORT #1427

PERIOD COVERED: 0000Z (UTC) 07/06/95 - 0000Z (UTC) 07/07/95

Daily Status Report as of 188/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed WF/PC-2 5832 (Synoptic Monitoring of Seasonal Phenomena on
Mars)

The WF/PC-2 was used to make synoptic monitoring observations of the
Planet Mars looking for seasonal phenomena. A variety of filters were used.
The observations were executed as scheduled, and no anomalies were noted.

1.2 Completed WF/PC-2 6277 (Stellar Populations in the Magellanic Clouds)

The WF/PC-2 was used to make observations of the Magellanic Cloud
globular cluster NGC-1818 to study its stellar populations. This will study
the mass function within the globular cluster. The observations were
completed as planned, and no anomalies were noted.

1.3 Completed FOS/BL and GHRS/2 5837 (Ultraviolet Imaging and Spectroscopy
of the Icy Galilean Satellites)

The Faint Object Spectrograph (Blue Side) and the High Resolution
Spectrograph (Side 2) were used to make ultraviolet observations of Jupiter's
moon Ganymede to study the albedo features caused by SO2 absorption. These
observations will be coordinated with the IUE Spacecraft and other ground
based observations. During the observations, at 187/132322Z, there was an
HRS fine x-null balance failure, caused by the number of fine corrections
during balancing exceeding the maximum permitted. HSTAR 5230 documents this
event. This did not appear to affect any of the science. The observations
were completed as planned, and no further anomalies were reported.

1.4 Completed GHRS/2 6029 (Distribution of O2 on Ganymede)

The High Resolution Spectrograph (Side Two) was used to make
observations of Jupiter's moon Ganymede to study the distribution of O2 on
the moon. This is to study the distribution of O2 as a function of latitude
and terrain type. Again, during these observations at 187/164444Z, as
reported in HSTAR 5231 and as described in 1.3 above, a fine x-null balance
failure occurred. There was no reported affect on the scientific data. The
observations were completed as planned, and no further anomalies were
reported.

1.5 Completed WF/PC-2 5706 (Morphology of Distant Galaxies - Cycle 4
Carryover)

The WF/PC-2 was used to make observations of a field of view
designated as Field-0017. This is part of a study of the morphology of
distant galaxies. The observations were completed as planned, and no
problems were reported.

1.6 Completed Three Sets of WF/PC-2 6276 (Peculiar and Interacting
Galaxies (WC01): Cycle 5)

The WF/PC-2 was used to make observations of galaxies ARP230, UGC-6456
and NGC-7742. The spatial resolution afforded by the HST is expected to
reveal important facts concerning the nature of these objects. The
observations were executed as scheduled, and no anomalies were noted.

1.7 Completed GHRS/2 5466 (The Interaction Between Io and The Plasma
Torus)

The High Resolution Spectrograph (Side Two) was used to make Echelle
spectrographic observations of the plasma torus which is a result of the
interaction of the planet Jupiter and its moon Io. Of particular interest is
the O II emission line at 2471 A0. The observations were completed and
scheduled, and no anomalies were reported.

1.8 Completed WF/PC-2 5663 (WF/PC-2 Cycle 4: Photometric Calibration
Monitor: Fields Part 2)

The WF/PC-2 was used to make observations of globular cluster NGC-5136
with various filters in order to check the photometric calibration of the
WF/PC-2. The observations were completed as planned, and no anomalies were
reported.

1.9 Completed WF/PC-2 5984 (Absorption - Selected Galaxies)

The WF/PC-2 was used to study the morphology of galaxy Q1548+0917, at
redshifts from 0.4 to 1.0, that are absorbing light from background quasars.
The absorbing galaxies were discovered from ground-based surveys. The
observation was completed with no reported anomalies.

1.10 Completed Two Sets of WF/PC-2 6028 (Composition of Surface Units on
Io)

The WF/PC-2 was used to make observations of Jupiter's moon Io
(Longitude 340 and 160). The objective is to create a multi-spectral map of
the surface from 0.22 to 0.79 microns. The observations were completed as
planned, and no anomalies were noted.

1.11 Completed WF/PC-2 5560 (WF/PC-2 Cycle 4 Calibration: Internal
Monitor. 1)

The WF/PC-2 was used to make several internal bias, K-Spot, and flat
calibration observations to monitor the CCD camera electronics, the optical
alignment, and to check for contamination. The observations were completed
as planned, and no anomalies were noted.

1.12 Completed WF/PC-2 6284 (Stellar Populations in the Local Group)

The WF/PC-2 was used to make observations of NGC-206, which is a OB
association of local group galaxy M-31, to study its mass function and
stellar population. The observations were completed as planned, and no
problems were reported.

1.13 Completed WF/PC-2 6058 (Direct Imaging of a Circumstellar Disk: Beta
Pictoris)

The WF/PC-2 was used to make observations of the circumstellar disk on
the star Beta Pictoris (aka, HD50241) in order to study the brightness
profile of the disk. The observations were completed as scheduled, and no
anomalies were noted.

1.14 Completed WF/PC-2 5839 (Gamma Ray Burst Counterparts in the
Ultraviolet)

The WF/PC-2 was used to make ultraviolet observations of object
GRB79-613 which is thought to be an optical counterpart of a gamma ray
burster. Three filters from the blue to the ultraviolet were used. The
observations were completed as scheduled, and no anomalies were noted.

1.15 Completed FOS/RD/BL 5537 (Cycle 4 Superflat Spectral Flat Fields)

The Faint Object Spectrograph was used to make observations of
ultraviolet standard star BD+28D4211 which has a relatively featureless
spectra. The observations were completed as planned, and no anomalies were
reported.

1.16 Completed Two Sets of WF/PC-2 6251 (Medium Deep Survey - Crafting
Test)

The WF/PC-2 was used in this continuation of the medium deep survey.
The proposal is targeting rare objects (lenses, peculiar galaxies, faint
stars) and sources related to the faint blue galaxy problem. This
observation was completed with no reported problems.

1.17 Completed FOC/96 5941 (HST Medium Deep Survey - Crafting Test)

The Faint Object Camera was used to make observations of the jet in
the nuclear region of galaxy M-86 looking for changes in the jet since last
year. Proper motions in the jet should be detectable in this time span. A
dark and an internal flat calibration images were also taken. The
observations were executed as scheduled, and no anomalies were noted.

1.18 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-1713,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.

1.19 Completed GHRS/2/1 5733 (Dynamics and Energy Balance in Stellar
Transition Regions, Cycle 4 Augmentation)

The High Resolution Spectrograph (Sides One and Two) were used to make
observations of late-type spectroscopic binary star HD22468 (aka, HR1099) to
aid in a study of dynamic and energy balance in stellar transition regions.
The observations were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 8
Successful : 8

Scheduled Reacquisitions : 5
Successful : 5

2.2 FHST Updates:

Scheduled : 22
Successful : 22

2.3 Significant HSTARs: None

2.4 Operations Notes:

Data analysis performed yesterday revealed that at the end of a solar
array slew at 185/1755Z, the minus wing moved away from its commanded
destination position, resulting in a command profile error of slightly
greater than 3.5 degrees. Dornier has been notified. HSTAR 5232 was written
to document the event.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Nothing at this time.

/DMH
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