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Дата изменения: Fri May 21 01:30:08 1993
Дата индексирования: Sun Dec 23 10:26:36 2007
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HUBBLE SPACE TELESCOPE
DAILY REPORT #891

PERIOD COVERED: 0800 EST
Daily Status Report as of 140/1200Z.

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed FGS 4031 (High Speed Astrometry - A Search for Planetary
Companions to Low Mass)

The FGSs were used to make astrometric observations of the star
Proxima Centauri to help determine if there is a Jupiter size planet
in orbit around the target star. Since the loss of the use of FGS #2
these observations were taken with one FGS plus gyro guiding. The
observations were executed as scheduled, and no problems were
reported.

1.2 Uplinked Updated Ephemeris Tables, Per MOSES 2871

1.3 Completed FOC/96 3801 (Search for QSOs Suitable for Subsequent
Observations of He II)

The Faint Object Camera (f/96) was used to make one image of
quasi-stellar object 2048+312 in order to measure the levels of its
ultraviolet flux. This is to determine if the flux levels are high
enough for subsequent observations with the GHRS and FOS. The
observations occurred without problems.

1.4 Completed GHRS/2 4104 (Ultraviolet Spectral Atlas of O Stars Cycle 2
Observations)

The High Resolution spectrograph was used to make 20 spectral
observations of sharp lined O class star HD18801. These observations
will be used to make determinations of its physical parameters by
comparing the spectra with the predicts of the NON-LTE model
atmospheres. The first four observations were reported to look
successful. A status buffer error message was received indicating
the presence of a carrousel reset problem. The next set of sixteen
observations were received and displayed. Two of these observations
did not occur. The previous observation extended three second too
far, had a subsequent effect on the following observations.

1.5 Completed PC 3603 (Snapshot Of Protoplanetary Nebula)

The Planetary Camera was used to take one snapshot image of the
protoplanetary system PK058-10D1. The OSS reported that the image
looked fine.

1.6 Completed PC 4714 (WF/PC Cycle 2 Calibration: Internal delta Flats)

The Planetary Camera was used to make one internal delta flat image
which will be used for the restoration of Earth flat image, which
were altered due to changes in quantum efficiency which occurred
after WFPC decontamination operations. The internal flat
observations were reported to look normal.

1.7 Completed GHRS 3608 (The 12C to 13C Isotope Ratio in Planetary
Nebulae)

The High Resolution Spectrograph was used to make spectral
observation of planetary nebula SMC-N2 which is located in the Small
Magellanic Cloud. The observations were executed as scheduled, and
no problems were reported.

1.8 Completed FOC/96 4804 (UV Imaging of Nearby Galaxies with FOC/96)

The Faint Object Camera (f/96) was used to make one ultraviolet
snapshot image of nearby galaxy UGC-8016. The observation was a ten
minute exposure, and used filter F220W. The OSS monitored the
observations, and assessed the data quality. No problems were
reported.

1.9 Completed FOS/BL 4054 (Probing the Nuclear Regions of Seyfert Galaxy
NGC-5548)

The Faint object Spectrograph was used to make spectral observations
of the nuclear region of Seyfert Galaxy NGC-5548 to look for time
variations in its continuum, and emission lines in Carbon IV and
Helium II. The observations were executed as scheduled, and no
problems were reported.

1.10 Completed WFC 4713 (WF/PC cycle 2 Calibration: WFC Internal Delta
Flats)

The Wide Field Camera was used to make a series of internal flat
observations. These internal flat observations were monitored in the
OSS, and the data quality was assessed. No problems were reported.

1.11 Completed WFC 4105 (HST Medium-Deep Survey: Cycle 1 High Latitude)

The Wide Field Camera was used to make one high latitude
medium-deep sky survey image which was taken in parallel with the
primary science observations. This is to help improve the
efficiency of the telescope throughput, while providing basic
survey data for a variety of projects. The OSS monitored the
observations. No problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 6
Successful : 6
Scheduled Reacquisitions : 7
Successful : 7
Losses of Lock : 0

2.2 FHST Updates:

Scheduled : 11
Successful : 11

2.3 Significant HSTARs: None

2.4 Operations Note: None

3.0 ACTIVITIES SCHEDULED FOR NEXT REPORTING PERIOD:

3.1 Complete HSP/UV1 4810 (Constraints on Continuum Models of Active
Nuclei: Fast Ultraviolet)

3.2 Complete WFC 4713 (WF/PC Cycle 2 Calibration: WFC Internal; Delta
Flats)

3.3 Complete HSP/POL 4888 (Remnant Stars in Supernova Remnants - AUG -
Cycle 3 High)

3.4 Complete GHRS/2 3614 (Boron as a Probe of Stellar Structures and
Mass Loss)

3.5 Complete GHRS/2 1206 (Sulfur Near IO Cycle 2)

3.6 Complete FOS/BL 4054 (Probing the Nuclear Regions of Seyfert Galaxy
NGC-5548)

4.0 ANOMALY STATUS:

4.1 Significant New Anomalies: None

4.2 Significant Unresolved Anomalies: None

5.0 SIGNIFICANT FORTHCOMING EVENTS:

A partial eclipse of the Sun will occur on Friday May 21
(141/1313-1327Z). A mini-FRR was held yesterday (Wednesday May 19,
1993) to review its effect on the HST. At the maximum coverage 10.7%
of the Sun will be obtained. The meeting reviewed the normal
operational procedures which will be used during the eclipse. The
status of the battery rate of charge procedures, as well as the
adjustments needed for the flight software to prevent the Course Sun
Sensors from giving a false indication were reviewed.

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