Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_97/hst_status_06_19_97 Дата изменения: Thu Jun 19 14:24:26 1997 Дата индексирования: Sun Dec 23 10:50:16 2007 Кодировка: Поисковые слова: storm

HUBBLE SPACE TELESCOPE

DAILY REPORT #1902

PERIOD COVERED: 0000Z (UTC) 06/18/97 - 0000Z (UTC) 06/19/97

Daily Status Report as of 170/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed Two Sets of STIS/CCD 7700 (STIS Non-Scripted Parallel
Archive Proposal)

The Space Telescope Imaging Telescope (CCD) was used to obtain
slitless spectroscopy with the G750L grism 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. This suggests that star formation rates were higher than
at present,and that AGN may have been more frequent. The low background
and high resolution of HST separates these objects from the background.
The proposal completed as planned, and no problems were reported.

1.2 Completed Three Sets of NIC/2 7330 (The Fueling of Active Nucleii: A
NICMOS Snapshot Survey)

The Near Infrared Camera (Camera Two) was used to probe the dark
matter distribution of galaxies NGC-5739 and NGC-7744 far from their
centers by observing intervening absorption from the Mg II doublet (lambda
2800) in the spectrum of one background QSO located in a geometrically
optimal position. HST observations are required because this feature is in
a wavelength range not accessible from the ground, and the QSO magnitudes
and expected strength of absorption make IUE observations unfeasible. The
proposal completed as expected with no anomalies.

1.3 Completed Five Sets of WF/PC-2 6194 (WF/PC-2 Cycle 5: Polarization
Proposal)

The WF/PC-2 was used to make polarization observations of star
BD+64D106 at four different spacecraft roll angles. This should permit a
detailed and independent calibration of each polarizer quads. A visual
flat calibration image was also taken. The observations were executed as
scheduled, and no anomalies were noted.

1.4 Completed STIS/CCD 7063 (STIS SMOV CCD Contamination Monitor)

The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard star GD153 in order to measure flux and look for
any gross changes over time that might indicate contamination. The
observations were completed as scheduled, and no anomalies were reported.

1.5 Completed Seven Sets of NIC/1/2/3 7701 (NICMOS Short One Orbit Parallel)

The Near Infrared Camera (Cameras One, Two and Three) was used as
part of a short NICMOS one orbit parallel program, to obtain "JHK" imaging
of sky regions when another instrument is prime. The observations were
completed as scheduled, and no anomalies were reported.

1.6 Completed Four Sets of WF/PC-2 7553 (Pure Parallel Archive Survey II)

WF/PC-2 parallel observations were obtained in the ultraviolet in
search for interesting objects. This program is designed to find
extragalactic sources with near ultraviolet excesses (3000 A0) outside the
galactic plane and far ultraviolet sources (1600 A0) in the galactic plane.
The procedure was executed as scheduled, and no anomalies were reported.

1.7 Completed FOC/48 6304 (Long-Slit Spectroscopy of the Nuclear Region
of a Sample of Nearby Radio Galaxies)

The Faint Object Camera (f/48) was used to make long-slit
spectrographic observations of the optical counterpart of a nearby,
Seyfert, radio galaxy 3C321. These spectra will be used to investigate the
dynamics of this region and the interaction of the radio-jet with the
surrounding interstellar medium. An internal flat and a dark calibration
image were also taken. The observations were executed as scheduled, and no
anomalies were noted.

1.8 Completed Two 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 grism 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 Six Sets of NIC/1/2/3 7676 (NICMOS-One Orbit Parallel)

The Near Infrared Camera (Cameras One, Two and Three) was used to
conduct an on-orbit calibration procedure. This was none in parallel with
the prime science observations . The procedure was completed as scheduled,
and no anomalies were noted.

1.10 Completed STIS/CCD 7160 (CCD Performance Following Reconfiguration)

The Space Telescope Imaging Spectrograph (CCD) was used to evaluate
the CCD performance following reconfiguration. To avoid loss of science
data due to particle-induced CCD resets during passage through the SAA, the
CCD is reconfigured after each SAA passage. A dark and a bias calibration
observations were also taken. The observations were completed as
scheduled, and no problems were reported.

1.11 Completed Ten Sets STIS/MA2 7604 (Cycle 7 MAMA Dark Measurements)

The Space Telescope Imaging Spectrograph (MA2) was used to make MAMA
dark measurements. These darks will be used in later image reductions and
also trended over the instrument's life time as an indicator of the
detector's degradation or damage. The observations were completed as
scheduled, and no problems were reported.

1.12 Completed Two Sets of WF/PC-2 7588 (Measuring Q0 With Type IA
Supernovae)

The WF/PC-2 was used to make observations of supernova SN1997A4 in
order to measure the Q0 parameter. This is to produce a precise Hubble
diagram which can be used to measure the cosmic deceleration and global
curvature of the universe. HST can make an essential contribution by
providing photometry with substantially higher precision and better
temporal coverage than can be obtained from the ground. The observations
were executed as scheduled, and no anomalies were noted.

1.13 Completed Two Sets of STIS/MA1 7078 (STIS18M Spectroscopic Mode
Image Quality - MAMA)

The Space Telescope Imaging Spectrograph (MA1) was used to examine
the spectroscopic quality across the entire detector for the primary
spectroscopic modes and establish whether changes occurred during launch.
The observations were completed as scheduled, and no anomalies were
reported.

1.14 Completed Two Sets of WF/PC-2 6425 (UV-Visible Observations of Hot
Stars in Young Magellanic Cloud Star Clusters)

The WF/PC-2 was used to make far ultraviolet observations of
populous clusters NGC-1818 and NGC-2004 which are located in the Small
Magellanic Cloud. The HST is essential for this project since only it
provides both the far-UV sensitivity needed for excellent temperature
discrimination and the high spatial resolution needed for photometry in
these crowded cluster fields. The observations were completed as planned,
and no anomalies were noted

1.15 Completed NIC/2 7038 (NICMOS Target Acquisition Test)

This test will verify the ability of NICMOS and NSSC-1 flight
software to perform Mode-2 (onboard autonomous) target acquisitions in
support of coronographic imaging. The efficacy of target location, image
centrartion and coordinate transformation (field distortion an SI-to-FGS)
on-board software will be evaluated. Flight software data table updates
derived from the pre- and post-target acquisition images and FGS data may
follow the execution of this test. The test completed nominally with no
reported problems.

1.16 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 HD1326 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.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 8
Successful : 8

Scheduled Reacquisitions : 5
Successful : 5

2.2 FHST Updates:

Scheduled : 19
Successful : 19

2.3 Operations Notes:

Due to electrical storms in the GSFC area, approximately seven hours
of data (from 169/230901Z until 170/060312Z) was lost when the NASCOM
DOMSAT ground station was damaged. All data is recoverable via replay from
the SSR or from LOR recordings.

As documented in HSTAR 6096, there was a NSSC-1 Exec 101 error
during an uplink load opportunity. The load was subsequently uplinked
uneventfully.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science and SMOV operations.

/DMH