Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_99/hst_status_03_22_99 Дата изменения: Mon Mar 22 15:30:36 1999 Дата индексирования: Sun Dec 23 11:01:18 2007 Кодировка: Поисковые слова: galaxy cluster

HUBBLE SPACE TELESCOPE

DAILY REPORT #2333

PERIOD COVERED: 0000Z (UTC) 03/18/99 - 0000Z (UTC) 03/22/99

Daily Status Report as of 081/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed Two Sets of STIS/CCD 8393 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation IV)

The Space Telescope Imaging Spectrograph (CCD) was used to make
POMS, non-scripted, low galactic latitude observations made in parallel
with the prime science observations. The observations were executed as
scheduled, and no anomalies were noted.

1.2 Completed Four Sets of WF/PC-2 7713 (WF/P-2 Cycle 7 Supplemental
Darks pt3/3)

The WF/PC-2 was used to make supplemental dark calibration images.
This dark calibration program obtains three dark frames every day to
provide data for monitoring and characterizing the evolution of hot pixels.
The observations were completed as planned, and no anomalies were noted.

1.3 Completed WF/PC-2 7339 (Sizes and Structures of Faint Blue Compact
Galaxies that are New Candidates for Proto-Spheroidal Galaxies)

The WF/PC-2 was used to obtain two-band WFPC-2 images the faint blue
compact galaxy LYN2-10083 at redshifts up to z ~ 0.7, that are excellent
new candidates for being spheroidal galaxies, caught in the act of
undergoing a major star-forming event. The observations completed with no
reported anomalies.

1.4 Completed Nine Sets of STIS/CCD 8091 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude, non-scripted, parallel observations. The observations
were completed as planned, and no anomalies were noted.

1.5 Completed WF/PC-2 7431 (Snapshot Survey of Microlensed Source Stars)

The WF/PC-2 was used to make snapshot survey images of microlensed
source star 97-BLG-15. Gravitational microlensing surveys have revealed an
excess of lensing events over theoretical predictions toward both the Large
Magellanic Cloud and the Galactic Bulge. The observations were completed
as planned, and no anomalies were reported.

1.6 Completed WF/PC-2 6554 (Extragalactic Globular Cluster Systems)

The WF/PC-2 was used to make observations of a extragalactic
globular cluster system which is located in galaxy NGC-3309. This is part
of a survey which will cover a range in galaxy luminosity, morphological
type, environment, galactic cluster specific frequency and galactic
cluster mean metallicity. The observations were executed as scheduled, and
no anomalies were noted.

1.7 Completed STIS/CCD/MA1 7432 (Morphological and Spectral Evolution of
Galaxies)

The Space Telescope Imaging Spectrograph (CCD and MA1) were used to
make observations to study the morphological and spectral evolution of the
galaxy 3C89-3. A library of ultraviolet images of normal galaxies at low
redshifts is essential to our understanding of the properties and evolution
of the high redshift universe. The observations were completed as planned,
and no problems were reported.

1.8 Completed Three Sets of WF/PC-2 8090 (POMS Test Proposal: WF-II
Parallel Archive Proposal Continuation)

The WF/PC-2 was used in the parallel mode to make some low galactic
latitude archive observations. The program will be used to take parallel
images of random areas of the sky. The observations were executed as
scheduled, and no anomalies were noted.

1.9 Completed WF/PC-2 6659 (A Search For Superplanets Around Weak T-
Tauri Stars)

The WF/PC-2 was used to make observations in the 1 micron band of
the T-Tauri class star HBC374 in order to search for superplanets. Weak
T-Tauri class stars are thought to have dissipated their circumstellar
disks recently, possibly by forming planetary systems. The observations
were completed as planned, and no anomalies were reported.

1.10 Completed Seven Sets of WF/PC-2 6357 (The Nuclear Morphology of
Elliptical Galaxies)

The WF/PC-2 was used to make images of the early type, large,
elliptical galaxies NGC-2634, NGC-5283, NGC-4125, NGC-3348, NGC-6278,
NGC-5903 and NGC-5576 (taken from a list of 150 galaxies) in order to study
its nuclear morphology. This survey will complement Illingworth's snapshot
study of later Hubble types. The observations were completed as scheduled,
and no anomalies were reported.

1.11 Completed WF/PC-2 7386 (A Snapshot Survey of Nova Shells)

The WF/PC-2 was used to make observational images of the super nova
shell V705-Cas in order to detect and measure its expanding gaseous shell.
These observations will trace the distribution of hot and cool gas in the
nova shells, and show their degree of inhomogeneity on both large and small
scales. The observations were completed as scheduled, and no problems were
noted.

1.12 Completed WF/PC-2/STIS/CCD 7615 (Determination of the Mass Function
of a Globular Cluster Through Gravitational Microlensing)

The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) were
used to make gravitational microlensing observations of the large globular
cluster NGC-6656 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 dark calibration observations were also taken. The
observations were completed as planned, and no problems were reported.

1.13 Completed WF/PC-2 6824 (PC Imaging of HH29: The Nearest
Interstellar Shock)

The WF/PC-2 was used to make observations of HH29 which is the
nearest interstellar shock front. High resolution imaging of HH objects
associated with stellar jets allows us to investigate the interaction zone
where the jet impacts the surrounding medium, the resulting shock
structures that are formed, and the temporal behavior of the jet itself.
The observations were executed as scheduled, and no anomalies were noted.

1.14 Completed STIS/MA1 7298 (A Snapshot Survey for UV bright Quasars at
redshift below 3)

The Space Telescope Imaging Spectrograph (MA1) was used to make
ultraviolet snapshot observations of the bright quasar CSO151 which has a
redshift (Z) below 3.0. The goal is to find quasars bright enough in the
ultraviolet for spectroscopic follow-up in the range of 900-1200 Angstroms.
A wave length calibration image was also taken. The observation were
completed as scheduled, and no anomalies were reported.

1.15 Completed Two Sets of STIS/CCD 7361 (The Nature of Nuclear Activity
in Nearby Galaxies)

The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the nuclear region of galaxies N5055 and N4143. The high
resolution spectra will be used to search for broad components in H-Alpha
and for velocity gradients, indicative of gas rotation or other ordered
motions. The observations were executed as scheduled, and no anomalies
were noted.

1.16 Completed WF/PC-2 7384 (Probing the Fine-Scale Structure and Colors
of Interstellar "Cirrus" Clouds)

The WF/PC-2 was used to make observations of the nebula NEB-162539
in order to probe the fine-scale structure and colors of interstellar
"cirrus" clouds. The ubiquitous nature of Galactic "cirrus" clouds make
them both: {1} accessible targets for the study of the properties of
interstellar dust grains, and {2} sources of confusion in investigations of
distant objects {e.g. galaxies, clusters of galaxies} at low surface
brightness levels. The observations were completed as planned, and no
problems were reported.

1.17 Completed WF/PC-2 6355 (A UV Atlas of Nearby Galaxies)

The WF/PC-2 was used to make ultraviolet observations of the nearby
galaxies NGC-3516 and NGC-1744. The aim of the project is to build a
reference ultraviolet atlas of galaxies whose optical images are well
known, with the highest possible degree of information, covering all the
morphological types and luminosity classes. The observations were executed
as scheduled, and no anomalies were noted.

1.18 Completed WF/PC-2 6815 (The Origin of the Polarization in the
Gravitationally Lensed "Cloverleaf" BAL QSO)

The WF/PC-2 was used to obtain polarimetry that will explore the
polarization mechanism operating in the gravitationally lensed "Cloverleaf"
broad absorption line {BAL} QSO G191B2B. The observations were completed,
and there were no reported anomalous activity.

1.19 Completed WF/PC-2 7377 (Dwarf Elliptical Galaxy Snapshot Survey II)

The WF/PC-2 was used to make observations of the dwarf elliptical
galaxy VCC2634 as part of Snapshot Survey II. This survey will provide
important information on the globular cluster systems of such galaxies and
the properties of their cores and nuclei. The observations were completed
as planned, and no anomalies were reported.

1.20 Completed WF/PC-2 6791 (The Collisional Debris of NGC 4438)

The WF/PC-2 was used to make observations of the collisional debris
in galaxy NGC-4438. This system is the nearest example of a recent and
close high-velocity collision between two large galaxies, and offers a
unique opportunity to learn about the physical processes in high-velocity
collisions which can transform cluster galaxies. The observations were
completed as planned, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 24
Successful : 24

Scheduled Reacquisitions : 25
Successful : 25

2.2 FHST Updates:

Scheduled : 50
Successful : 50

2.3 Operations Notes:

Using ROP SR-1, the SSR EDAC error counter was cleared five times.

SI C&DH errors were reset twice using ROP NS-5.

ROP RD-4 was used to manually record data on the engineering tape
recorder. The recorder was then manually stopped and subsequently played
back.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.

/DMH