Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_97/hst_status_08_04_97 Дата изменения: Mon Aug 4 18:10:48 1997 Дата индексирования: Sun Dec 23 10:51:10 2007 Кодировка: Поисковые слова: cygnus loop

HUBBLE SPACE TELESCOPE

DAILY REPORT #1933

PERIOD COVERED: 0000Z (UTC) 08/01/97 - 0000Z (UTC) 08/04/97

Daily Status Report as of 216/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed Nine Sets of WF/PC-2 7621 (WF/PC-2 Cycle 7 Supplemental
Darks PT1/3)

The WF/PC-2 was used to make supplemental dark calibration images.
This set of dark calibrations is intended to obtain three dark frames every
day to provide data for monitoring and characterizing the evolution of hot
pixels. The observations were executed as scheduled, and no anomalies were
noted.

1.2 Completed Eight Sets of STIS/CCD 7659 (Daily Darks to Update
Acquisition Bad Pixel Table)

The Space Telescope Imaging Spectrograph (CCD) was used to make dark
calibration images in order to update the acquisition bad pixel table.
Daily hot pixel lists can also be used for science data analysis. The
observations were executed as scheduled, and no anomalies were noted.

1.3 Completed NIC/2 7420 (A Near-Infrared Search for Very Low Mass
Companions to Stars Within 10 Parsecs of the Sun)

The Near Infrared Camera (Camera Two) was used to make searching
observations for very low mass companions to variable star BD+18D3421.
This star is known to be within 10 parsecs of the Sun. The observations
were executed as scheduled, and no anomalies were noted.

1.4 Completed FOC/96/WF/PC-2 7274 (Secular Changes in the Jet of M-87)

The Faint Object Camera (f/96) and the WF/PC-2 were both used to
make observations of the secular changes in the jet coming off of the
active galactic nuclei of galaxy M-87. Past observations with the FOC have
shown changes as small as 0.03", and provide a unique opportunity to study
proper motions and structural changes of the jet. An internal flat
calibration image was also taken. The observations were completed as
scheduled, and no anomalies were reported.

1.5 Completed Nineteen Sets of NIC/3 7780 (NICMOS Short One Orbit
Parallel - Camera 3 Focus Test)

The Near Infrared Camera (Camera Three) was used to conduct a short
one orbit focus test which was conducted in parallel with the prime science
observations. The observations were completed as scheduled, and no
anomalies were noted.

1.6 Completed Sixteen Sets of STIS/CCD 7727 (STIS Non-Scripted Parallel
Archive Proposal)

The Space Telescope Imaging Spectrograph (CCD) was used to obtain
parallel slitless spectroscopy with the G750L grating to search for
emission line galaxies at intermediate to high redshift. Field galaxy
surveys have shown that at high redshift most galaxies have strong emission
lines, and are compact and blue. The observations were completed as
planned, and no anomalies were reported.

1.7 Completed WF/PC-2 6657 (Resolving the Shocks in Powerful Radio Galaxies)

The WF/PC-2 was used to make observations of the powerful radio
galaxy 3C277.3 in order to try to find the optical counterpart of its jets.
It is clear that jet/cloud interactions play an important role in defining
the morphology, kinematics and ionization of the extended gas in active
galaxies. We are still far from understanding the physical mechanisms
involved. The observations were executed as scheduled, and no anomalies
were noted.

1.8 Completed Ten Sets of STIS /CCD 7675 (STIS Non-Scripted Parallel
Archive Proposal)

The Space Telescope Imaging Spectrograph (CCD) was used in the
parallel mode to obtain slitless spectroscopy with the G750L grating to
search for emission line galaxies at intermediate to high redshift. The
observations were completed as planned, and no anomalies were reported.

1.9 Completed WF/PC-2 6818 (The Atmosphere of Uranus: Vertical Aerosol
Structure and Horizontal Inhomogeneity)

The WF/PC-2 was used to make observations of the planet Uranus in
order to study the vertical aerosol structure and horizontal inhopmogeneity
of its atmosphere. Evidence is emerging that the atmosphere of this
distant gas giant may be beginning to undergo interesting changes as the
planet moves away from southern summer solstice in 1986 toward equinox in
2007. The observations were executed as scheduled, and no anomalies were
noted.

1.10 Completed Three Sets of NIC/1/2/3 7775 (NICMOS Earth Flats)

The Near Infrared Spectrograph Multi-Object Camera (NICMOS) was used
to make Earth flat calibration observations. This proposal obtains a
series of Earth flats for a subset of narrow-, medium-and broad-band NIC 1,
2 and 3 filters. These flats will be used to generate the master flats for
narrow-band filters and to determine the OTA illumination pattern as a
function of wavelength and camera. The observations were completed as
scheduled, and no problems were noted.

1.11 Completed Four Sets of WF/PC-2 6904 (WF/PC-2 Cycle 6 Cal.:Darks)

The WF/PC-2 was used to make a series of several dark calibration
images as part of a standard calibration within Cycle 6. This calibration
procedure is performed once per week as part of an on going CCD calibration
to be used to monitor and characterize hot pixels. The observations were
executed as scheduled, and no anomalies were noted.

1.12 Completed WF/PC-2 6578 (Optical Morphology of NGC 5128: X-Ray
Ridges and the Geometry of the Dust Lane)

The WF/PC-2 was used to make observations of the galaxy NGC-5128 in
order to study its optical morphology and the geometry of its dominate dust
lane and strong x-ray ridges. This should resolve the stellar associations
and determine the number, luminosities and spectral types of the sources
seen along the edge of the dust lane which were seen in earlier
observations with WF/PC-I. The observations were completed as planned, and
no anomalies were noted.

1.13 Completed Ten Sets of NIC/1/2/3 7779 (NICMOS One Orbit Parallel -
Camera 3 Focus)

The Near Infrared Multi-Object Spectrograph (Cameras One, Two and
Three) was used to conduct a one-orbit camera focus test taken in parallel
with the prime science observations. The tests were completed as
scheduled, and no anomalies were noted.

1.14 Completed STIS/CCD 7615 (Determination of the Mass Function of a
Globular Cluster Through Gravitational Microlensing)

The Space Telescope Imaging Spectrograph (CCD) was used to make
gravitational microlensing observations of the large globular cluster M-22
located in Sagittarius in order to study its mass function. Gravitational
microlensing offers a unique and direct method of determining the masses of
stars and other compact objects down to planetary masses. A bias and a
dark calibration observations were also taken. The observations were
completed as planned, and no problems were reported.

1.15 Completed STIS/CCD 7601 (CCD Dark and Bias Monitor)

The Space Telescope Imaging Spectrograph (CCD) was used to conduct
bias and dark monitoring. Also, observations were made to track the growth
of hot pixels on the CCD in general and within the various target
acquisition apertures specifically. The observations were completed as
planned, and no anomalies were reported.

1.16 Completed Three Sets of WF/PC-2 6364 (Snapshot Survey of
Proto-Planetary Nebulae and AGB Stars)

The WF/PC-2 was used to make some snapshot survey observations of
protoplanetary nebular systems IRAS16342, HH4049 and IRAS04296 to study
their circumstellar envelope. The purpose is to discern the evolutionary
sequence that produces axially-symmetric planetary nebulae. The
observations were executed as scheduled, and no anomalies were noted.

1.17 Completed WF/PC-2 6363 (The Environments and Host Galaxies of
BL-Lac Objects)

The WF/PC-2 was used to make snapshot survey observations of BL-Lac
object MS1256.3+0 in order to study its environment and its host galaxy.
The goal is to investigate systematic trends in host galaxy type, unusual
morphological features, nearby companion galaxies, etc. The observations
were executed as scheduled, and no anomalies were noted.

1.18 Completed WF/PC-2 6887 (A Photometric Search for Faint Companions
to Nearby Stars)

The WF/PC-2 was used to make a photometric search observations of
the nearby star HD173739 in order to look for possible companions. The
technique involves use of the Planetary Camera with wide band pass filters
to photometrically measure for the presence of resolved dark companions.
The observations were executed as scheduled, and no anomalies were noted.

1.19 Completed WF/PC-2 6159 (Giant H-II Regions in NGC-6822)

The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the H-II regions in galaxy NGC-6822. Giant H-II regions in
external galaxies represent centers of young massive star formation and
their structure may indicate the process of progressive star formation.
The observations were completed as scheduled, and no problems were
reported.

1.20 Completed WF/PC-2 6640 (A Stellar Population Survey of the Nuclear
Region of M-33)

The WF/PC-2 was used to make observations of a stellar population
(NGC-598) which is located in galaxy M-33. Analysis of archival HST images
of the nuclear region of M-33 reveal that the old, red stars are more
centrally concentrated to the nucleus than the young star forming disk.
The observation were executed as planned, and no anomalies were reported.

1.21 Completed STIS/CCD 7672 (STIS CCD Sensitivity Monitor)

The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard star AGK+81D266 in order to monitor the
sensitivity of each CCD grating mode to detect any change due to
contamination or other causes. The observations were completed as
scheduled, and n o anomalies were noted.

1.22 Completed WF/PC-2 6693 (Curcumstellar Nebulae as Fossil Records of
the Mass Loss History)

The WF/PC-2 was used to make images of the curcumstellar nebula
surrounding the luminous blue variable star HR-Carinae in order to study
the fossil records of its mass loss history. The observations were
completed as scheduled and no anomalies were reported.

1.23 Completed NIC/2 7331 (Near-IR Properties of the Bulges of Spiral
Galaxies)

The Near Infrared Camera (Camera Two) was used to make infrared
observations of the bulge in spiral galaxy NGC-4219. Near-IR data at HST
resolution are essential for correcting for the effect of dust and will
enable us to derive robust nuclear properties for the sample. The
observations were executed as scheduled, and no anomalies were noted.

1.24 Completed NIC/1 7344 (Witnessing the Birth of Radio Galaxies:
WF/PC-2 & NICMOS Observations of CSOs)

The Near Infrared Camera (Camera One) was used to make observational
images of the cores of bright, nearby galaxy (Compact Symmetric Objects)
CSO 1146+59 in order to try to witness the birth of a radio galaxy. Only
HST can image these galaxies at the same size scale of the CSO itself, also
allowing us to search for nuclear structures aligned with the radio source
in this formative stage. The observations were completed as planned, and
no anomalies were reported.

1.25 Completed WF/PC-2 7450 (The Formation of Bulges of Spiral Galaxies:
Central Visual-Infrared Color Gradients)

The WF/PC-2 was used to make observations of the bulge in spiral
galaxy NGC-5689 in order to obtain high-resolution optical and near
infrared images for a complete survey sample of bulges of spiral galaxies.
The observations were completed as scheduled, and no anomalies were
reported.

1.26 Completed Two Sets of WF/PC-2 6587 (Black Holes and Cores of
Early-Type Galaxies)

The WF/PC-2 was used to make observations of early-type galaxy
NGC-4709 and NGC-3585 in order to study its nuclear core region and its
possible black hole. The campaign to find black holes in the centers of
galaxies using HST has so far been highly successful. The observations
were completed as planned, and no problems were reported.

1.27 Completed WF/PC-2 5779 (Miscellaneous - HH7-11 and Cyg Loop - Cycle 4)

The WF/PC-2 was used to obtain images of HH7-11 and several regions
in the Cygnus Loop. These observations will be used to study the
morphology of the targets to look for motion in the bipolar outflow
(HH7-11) and the supernova shock (NGC6995). The observations were
completed with no reported anomalies.

1.28 Completed FGS 6486 (Orbits of Pre-Main Sequence Binaries)

The FGSs were used in the TRANS mode to make astrometric
observations of the per-main sequence, binary star system Elias-12 in order
to help compute its orbital parameters. The observations will be used to
make orbital maps of T-Tauri class stars. From these orbital parameters
they will be able to derive the first reliable mass measurements for low
mass pre-main sequence stars. The observations were completed as
scheduled, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 23
Successful : 23

Scheduled Reacquisitions : 20
Successful : 20

2.2 FHST Updates:

Scheduled : 61
Successful : 61

2.3 Operations Notes:

No anomalies to report.

PDB 52.A instellation on the OLS at 214/1550Z
SRR Interrupt Log dump at 214/2253Z
Uplinked Bad Pixel Table STIS) at 215/2108Z

The STIS FSW installation conducted Sunday,day 215 went according
to the script. The script execution started at 12:17 GMT and was completed
at 22:00 GMT. STIS FSW Versions 4.7 and 4.4 were loaded. The CCD anneal
started at 12:30 GMT and ended at 20:00 GMT for a total time of 7:30. The
TEC was turned back on in steps and was completely up to a set point of -83
degC by 22:00 GMT. A new bad pixel table was uplinked and the CCD was
returned to standby at 21:15.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.

/Written by Donovan Haxton