Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ops/swat/safing/95008/daily.txt Дата изменения: Mon Jan 9 20:06:03 1995 Дата индексирования: Sun Mar 2 01:01:51 2014 Кодировка: Поисковые слова: южная атлантическая аномалия

Date: Mon, 9 Jan 95 11:47:55 EST
Comment: HST status and observations written by Joe Ryan of NASA/GSFC
Originator: hst-status@stsci.edu
Version: 5.5 -- Copyright (c) 1991/92, Anastasios Kotsikonas
From: TWELE@avion.stsci.edu
To: miller@stsci.edu
Subject: HST Status Report, 01/06 - 01/09

HUBBLE SPACE TELESCOPE
DAILY REPORT #1301

PERIOD COVERED: 0000Z (UTC) 01/06/95 - 0000Z (UTC) 01/09/95

Daily Status Report as of 009/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed WF/PC-2 5369 (Medium Deep Survey: Cycle 4 Medium High
Galactic Latitude)

The WF/PC-2 made a series of observations of high latitude objects
as part of a medium deep sky survey. The observations were taken in
parallel with other prime science observations. The observations were
completed as scheduled, and no anomalies were noted.

1.2 Completed WF/PC-2 5778 (Cycle 4 Lyman Alpha Throughput Verification)

The WF/PC-2 was used to make ultraviolet observations of standard
star BD+75D325 through filter F130LP as part of a Lyman Alpha
throughput verification test. The observations were completed as
scheduled, and no anomalies were reported.

1.3 Completed WF/PC-2 5354 (Imaging in the Crab Nebula)

The WF/PC-2 was used to make images of NGC-1952-BR (aka, M-1, the
Crab Nebula) to study ionization structure and to look for hot
spots. The observations were completed as planned, and no problems
were reported.

1.4 Completed WF/PC-2 5560 (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.

1.5 Completed FGS 5135 (Extragalactic Astrometry and Astrophysics)

The FGSs were used to make astrometric observations to obtain data
needed to measure the HIPPARCOS reference frame with respect to the
extragalactic reference frame. The observations were executed as
scheduled, and no anomalies were noted.

1.6 Completed WF/PC-2 5091 (GTO High Latitude Parallel Program - Cycle 4)

The WF/PC-2 was used in parallel with the prime science observations
to make high galactic latitude observations greater than +/-30
degrees. The observations were executed as scheduled, and no
problems were reported.

1.7 Completed WF/PC-2 5446 (The Nuclei of Nearby SO and Spiral Galaxies:
A PC Snapshot Imaging Survey)

The WF/PC-2 was used to make observations of the core region of
galaxy NGC-1527 to provide statistics on the nuclear cusps, stellar
condensations, and inner stellar disks and dust lanes. The
observations were executed as scheduled, and no anomalies were noted.

1.8 Completed FOS/BL 5711 (Black Hole Binaries in the LMC)

The Faint Object Spectrograph (Blue Side) was used to study the LMC
binary CAL 87, which is the known eclipsing black hole candidate.
The changes in the continuum will be compared with model predictions
to learn more about the accretion disk. The proposal completed with
no reported anomalies.

1.9 Completed WF/PC-2 5523 (Post-COSTAR FOC/96 Fine Aperture Location)

The WF/PC-2 was used to refine the location of the f/96 aperture in
the V2-V3 coordinate frame. There were no reported problems during
this observation.

1.10 Completed WF/PC-2 5092 (GTO Low Latitude Parallel Program - Cycle
4)

The WF/PC-2 was used to make observations taken in parallel with the
prime science observations. This is part of a survey to take
pictures of a large number of fields within 30 degrees of the
galactic plane. The observations were completed as planned, and no
problems were reported. A second set of planned observations were
lost because of the Safemode entry due to SADE Failure Flag Test at
008/0820Z. (See Note 2.4)

1.11 Completed WF/PC-2 5629 (Cycle 4 Photometric Calibration Monitor 1C:
4-Chip Standard in F170W)

The WF/PC-2 was used to make photometric calibration observations of
the ultraviolet standard star GRW+70D582. The observations were
executed as scheduled, and no anomalies were noted.

1.12 Completed WF/PC-2 5764 (Cycle 4 Calibration: Internal Flats -
Repeat)

The WF/PC-2 was used to make internal flat calibration images using
the VIS lamp and internal sources. The observations were executed as
scheduled, and no anomalies were noted. A second set of planned
observations were lost because of the Safemode entry due to SADE
Failure Flag Test at 008/0820Z. (See Note 2.4)


1.13 Completed FOS/RD 5753 (SINS: The Supernova Intensive Study)

This proposal is part of a continuing project to study the
development of supernovae and their circumstellar matter. In this
case, LMC-SN1987 was observed. The observation completed normally,
and there were no reported problems.

1.14 Completed WF/PC-2 5584 (Parallel High Resolution Imaging of Diffuse
Objects in the Magellanic Cloud)

The WF/PC-2 was used to observe diffuse object LMC-30DOR. Of
particular interest were H II regions, planetary nebulae, snares,
supershells, and proto-stellar and maser regions. The observations
were not completed as planned.

*** Safemode entry due to SADE Failure Flag Test at
008/0820Z. (See Note 2.4)


2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 6
Successful : 6

Scheduled Reacquisitions : 10
Successful : 10

2.2 FHST Updates:

Scheduled : 17
Successful : 17

2.3 Significant HSTARs:

HSTAR 5084: Safemode entry due to SADE Failure Flag Test at
008/082054Z. (See Note 2.4) Science recovery SMS will start at
010/1200Z.

2.4 Operations Notes:

The HST entered software sun point safemode at 008/082054Z due to
the failure of the SADE torque failure test. The SADE 1 R unit was
switched off and SADE 2 turned on by the flight software when the
problem was experienced. A health and safety load was uplinked at
008/1744Z, and was for the interval 008/1832Z - 010/0030Z. Another
health and safety load has been prepared for the interval 010/0030Z
- 010/1200Z.

A revised SMS that incorporates certain solar position restrictions
has been generated and is to begin execution on Tuesday, Jan. 10 at
7:00 A.M. local. These restrictions are temporary safety measures to
enable return to science operations while analysis of the SADE 1 R
failure continues.

The spacecraft onboard safing configurations have been modified to
use the SADE 2 in the event of another safemode entry.

Safemode Recovery Status meetings and telecons with ESA are being
held today (Monday).

Apart from the safing event, ESTR #2 experienced further bit slips.
A re-dump produced bit slips, but at different locations.

3.0 ANOMALY STATUS:

3.1 Significant New Anomalies: None

3.2 Significant Unresolved Anomalies: None

4.0 SIGNIFICANT FORTHCOMING EVENTS:

HST Science recovery SMS will start at 010/1200Z.

/DMH
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