Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_95/hst_status_06_06_95 Дата изменения: Tue Jun 6 18:16:42 1995 Дата индексирования: Sun Dec 23 10:38:23 2007 Кодировка: Поисковые слова: coma

HUBBLE SPACE TELESCOPE

DAILY REPORT #1405

PERIOD COVERED: 0000Z (UTC) 06/05/95 - 0000Z (UTC) 06/06/95

Daily Status Report as of 157/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed Four Sets of WF/PC-2 5562 (WF/PC-2 Cycle 4 Calibration:
Internal Monitor 3: Darks)

The WF/PC-2 was used to obtain several 30-minute long, dark exposures
to provide ongoing calibration of the CCD dark current and to monitor and
characterize the evolution of hot pixels. The observations were executed as
scheduled, and no anomalies were noted.

1.2 Completed WF/PC-2 4819 (Point Spread Function Characterization)

The WF/PC-2 was used to make multiple exposures of the open cluster
M-67 in Cancer (aka NGC-2682) during coarse and fine dwell scans to study the
point spread function. A dark calibration image was also taken. The
observations were executed as scheduled, and no anomalies were noted.

1.3 Completed FOS/BL 6146 (FOS Location of Spectra and Aperture - Part 2)

The Faint Object Spectrograph (Blue Side) was used to conduct a test to
determine the repeatability of positioning the filter-grating wheel. All
observations were internal. A wave length calibration and a dark image were
also taken. All observations were executed as scheduled, and no anomalies
were noted.

1.4 Completed WF/PC-2 5980 (The Jet of 3C273)

The Planetary Camera was used to image the jet of 3C273. The
objective is to study the morphology of the jet at high resolution. The
investigators are particularly interested in comparing these data with
optical and radio maps to investigate the mechanism for particle
acceleration, which occurs all along the jet. The proposal completed with no
reported anomalies.

1.5 Completed WF/PC-2 5505 (Deep Probes of Gravitational Lens Systems)

The WF/PC-2 was used to make deep images of of the elliptical galaxy
MG11654+134 which is a member of the Coma Cluster. The intent is to improve
our understanding of the stellar populations in ellipticals and to determine
the distance to the Coma Cluster. Although the acquisition failure to coarse
track (described in section 2.1) occurred during this proposal, the
observations were completed as planned, and no problems were noted.

1.6 Completed WF/PC-2 5655 (WF/PC-2 Cycle 4 Calibration: Internal Monitor.
2: Flats Part 2)

The WF/PC-2 was used to make both dark and visual flats. The
observations were completed as planned, and no problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 4
Successful : 4

At 156/1235Z, an acquistion failed to Coarse Track on
Tracker 3 when presence was not achieved on Tracker 2.
The SMS magnitude was 9.498, and the estimated magnitude
was 9.61. The tracker remained in coarse track until
157/0038Z, with occultations. HSTAR 5215 was written to
document this event.

Scheduled Reacquisitions : 11
Successful : 11

2.2 FHST Updates:

Scheduled : 9
Successful : 8

One failure occurred at 157/0828Z. THe reason is currently
unknown, and analysis is ongoing.

2.3 Significant HSTARs: None

2.4 Operations Notes:

No significant operational problems were reported.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

The RMGA will be powered on and off today for the interval
157/1200Z - 1521Z.

/DMH
-END-