Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_93/hst_status_03_19_93 Дата изменения: Tue Mar 23 07:09:08 1993 Дата индексирования: Sun Dec 23 10:25:46 2007 Кодировка: Поисковые слова: ultraviolet

HUBBLE SPACE TELESCOPE
DAILY REPORT #848

PERIOD COVERED: 0800 EST
Daily Status Report as of 081/1200Z.

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed GHRS/2 3496 (Ultraviolet Atlas of Sirius)

The High Resolution Spectrograph was used to obtain spectra of the
star Sirius in the WSCAN Mode to get accurate flux distribution and
line profiles at ultraviolet wavelenghts. Thirteen observations were
received and displayed. The onboard target acquisition found the
target, and the flux counts were 94,930. The following observations
were reported to look okay, but the wave length calibrations were
completely swamped by light from the target.

1.2 Completed Three Sets of FOC/96 4804 (UV Imaging of Nearby Galaxies
with FOC/96)

The Faint Object Camera (f/96) was used to make ultraviolet
snapshots of three different nearby galaxies UGC-5079, UGC-2154, and
UGC-2669. The first observation was received in real-time, and
displayed in the OSS. It was reported to look okay. The other two
observations were taken during LOS, and their observations still
remain of the science tape recorder. They will be analyzed later. No
telemetry problems were reported.

1.3 Completed PC 4769 (Structure of Quasars and Related Objects)

The Planetary camera was used to take one long exposures and several
short exposures of the classic quasi-stellar object 3C273 (which is
a strong radio source). A total of six observations were received
and displayed. They all were reported to look okay.

1.4 Completed WFC/PC 4109 (WF/PC Calibration: Rapid Internal Monitor)

Both the Planetary Camera and the Wide Field Camera were used to
make a series of four internal flat observations using filter F555W.
This is to check for new forms of contamination (i.e., measles and
daisies), and the return of quantum efficiency hysteresis. All four
observations were reported to look okay.

1.5 Completed GHRS/2 3468 (UV Molecular Band in HD44179)

The High Resolution Spectrograph was used to make five ultraviolet
of object HD44179 (aka, the Red rectangle). The Guide star
acquisition was made in course track. The onboard spiral target
acquisition was executed without problems. The return to brightest
object option was not used. The target was found in the first map,
and the final search flux was at 2399 counts.

1.6 Completed GHRS/2 3608 (12c-13c Isotope Ratio in Planetary Nebulae)

The High Resolution Spectrograph was used to make one observation of
the planetary nebula LMC-N122 which is located in the Large
Magellanic Cloud. The observations were received and displayed in
the OSS. They were reported to look okay.

1.7 Uplinked Updated Ephemeris Tables, Per MOSES 2871

1.8 Completed PC 3872 (Blue Stragglers in the Cores of Globular Clusters)

The Planetary Camera was used to take a series of sixteen images of
globular cluster NGC-5904 looking for blue straggler stars. All
sixteen observations were received and displayed in the OSS. They
all were reported to look okay.

1.9 Completed Two Sets of FOS/BL 4097 (FOS Locations of spectra: Y-Base
Maps)

The Y-Base Test was conducted using the Faint Object Spectrograph.
Images of the internal Pt-Ne lamp were made through the 0.3"
aperture for every grating. The blues side wave length calibrations
were executed without problems. They were received and displayed in
the OSS. Except for some data hits, the observations looked okay.
One wave length calibrations was received in real time on the red
side, and looked okay. The other observations were completed during
LOS, and still remain on the science tape recorder. No problems were
reported with the telemetry.

1.10 Completed WFC/PC 4207 (WF/PC Cycle 2 Calibration: Photometric
Calibration Monitor)

Ultraviolet flux calibrations observations were made using both the
Planetary Camera and the Wide Field Camera using standard star
BD+75D325. All observation were executed in fine lock. The first
six observations were received and displayed in real time. There
were some data dropouts noted during the transmission. The next six
observations occurred during LOS and still remain on the science
tape recorder. They will be analyzed later.

1.11 Complete PC 4593 (Positioning of the Geminga Optical Counterpart)

The Planetary Camera was used to make observations of the strong
gamma-ray source called Geminga to obtain an accurate position of
its optical counterpart. The observation were executed as
scheduled, and no problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 12
Successful : 12
Scheduled Reacquisitions : 30
Successful : 30
Losses of Lock : 0

2.2 FHST Updates:

Scheduled : 27
Successful : 27

2.3 Significant HSTARs: None

2.4 Operations Note:

The PCS subsystem was nominal the weekend. The gyros were placed in
high mode for two HGBU data takes. The first data take was at
078/2224Z to 079/0128Z. A second HGBU data take was done on
Day 080. The analysis of the data takes seems to indicated the
Gyro-5 (G5) has begun to settle down at a new value as seen from the
gyro bias in sensor space.

3.0 ACTIVITIES SCHEDULED FOR NEXT REPORTING PERIOD:

3.1 Complete FOS/BL 4222 (Mass Exchange Binaries- Cycle 1,Final Piece)

3.2 Complete WFC 1297 (GTO High Latitude Parallel Program)

3.3 Complete WFC 4658 (Determination of the Extragalactic Distance
Scale, M101)

3.4 Complete PC 3603 (Snapshot of Protoplanetary Nebulae)

3.5 Complete FOC/96 4804 (UV Imaging of Nearby Galaxies With FOC/96)

3.6 Complete GHRS/2 4066 (GHRS Echelle Spectral Lamp Mini-Functional
Test)

3.8 Complete PC 4140 (WF/PC Cycle 2 Calibration: Rapid Internal Monitor
Part 2)

4.0 ANOMALY STATUS:

4.1 Significant New Anomalies: None

4.2 Significant Unresolved Anomalies: None

5.0 SIGNIFICANT FORTHCOMING EVENTS: Nothing at this time.

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