Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/old_reports_98/hst_status_01_20_98 Дата изменения: Tue Jan 20 16:42:28 1998 Дата индексирования: Sun Dec 23 10:54:09 2007 Кодировка: Поисковые слова: reflection nebula

HUBBLE SPACE TELESCOPE

DAILY REPORT #2042

PERIOD COVERED: 0000Z (UTC) 01/16/98 - 0000Z (UTC) 01/20/98

Daily Status Report as of 020/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed Four Sets of STIS/CCD 7802 (Daily Darks to Update
Acquisition Bad Pixel Table)

The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations to obtain daily darks to update the acquisition
bad pixel table. These darks are intended to identify hot pixels for
update to the acquisition on-board FSW hot 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.

1.2 Completed NIC/3 7815 (NICMOS Earth Flats)

The Near Infrared Camera (Camera Three) was used to make a Earth
flat field calibration image. This proposal obtains a series of earth
flats for a subset of narrow and medium band NIC/3 filters in advance of
the NIC/3 campaign. 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. The observations were completed as planned, and no
anomalies were reported.

1.3 Completed Eight Sets of NIC/1/2/3 7456 (Water in Protoplanetary Disks)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the protoplanetary disk around stars GL-806, GM-Aur,
HL-Tau, SVS-13, DS Tau GI-Tau, IP-Tau and DG-Tau to search for water in
their disks. This survey will be the first to take a detailed look at the
gas phase properties of pre-main-sequence disks at AU distances. The
seventh iteration of this proposal was scheduled while NICMOS was in
suspend. Then in the final iteration the acquisition default mentioned in
2.1 occurred. Otherwise, the observations were completed as scheduled, and
no further anomalies were reported.

1.4 Completed Ten Sets of NIC/1/3 7813 (NIC/3 HDF Darks)

The Near Infrared Camera (Cameras One and Three) was used to make
internal dark calibration images which will be used when processing the
Hubble Deep Field images during the first NICMOS Camera Three campaign.
The observations were executed as scheduled, and no anomalies were noted.

1.5 Completed Eight Sets of NIC/1/2/3 7322 (The IMF Below 1 Msun in
Young Clusters: 1.9micron Water Band Imaging of IC348)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of clusters GL-195A, GL-328, GL-213, GJ-1111, IC248,
BD+010D4774, GL-83.1 and IC348. This study will be the first to obtain
spectral types for a young cluster population complete to K=16, and thereby
quantify, to unprecedentedly high precision, the IMF below 1M{sun} in young
clusters. The third and fourth iterations of this proposal was scheduled
while NICMOS was in suspend. Otherwise, the observations were executed as
scheduled, and no further anomalies were reported.

1.6 Completed Ten Sets of NIC/1/3 7813 (NIC/3 HDF Darks)

The Near Infrared Camera (Cameras One and Three) was used to make
internal dark calibration images which will be used when processing the
Hubble Deep Field images during the first NICMOS Camera Three campaign.
The eighth iteration of this proposal was scheduled while NICMOS was in
suspend. Otherwise, the observations were executed as scheduled, and no
further anomalies were noted.

1.7 Completed NIC/1/2/3 7246 (Line Imaging of the L1448-Star Shock Region)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the star shock region of L1448-4. The bow shock
associated with the infrared source L1448-4 star is one of the best
examples of the interaction of an outflow from a recently formed star with
the surrounding medium. As mentioned in 2.1, one of the acquisitions for
the latter portion of this proposal succeeded on the third try. Otherwise,
the observations were executed as scheduled, and no further anomalies were
noted.

1.8 Completed NIC/1/2/3 7231 (Star Formation in Orion)

The Near Infrared Camera (Camera One, Two and Three) was used to
make observations of BN-IRC2 which is located in the Orion Nebula. Images
of H II, Fe II, and Paschen_alpha observations will be made to characterize
processes associated with star formation in the Orion Nebula. The
observations were completed as scheduled, and no anomalies were reported.

1.9 Completed STIS/CCD/NIC/1/2/3 7234 (Fe II AND Mg II Emission From
Redshift 4 QSOs)

The Space Telescope Imaging Spectrograph (CCD) and the Near Infrared
Camera (Cameras One, Two and Three) were used to make observations of the
redshift 4 QSO object Q0000-26. This QSO will be observed with both NICMOS
grisms A and B to measure the Fe II bump and both the Fe II and Mg II 2800
A0 features, as well as the 1909 A0 C III line. The sensitivity is
adequate to measure the broad Fe II bump in one orbit per source. While
operating this proposal, the NICMOS suspend described in 2.3 occurred. No
further anomalies were reported.

1.10 Completed Three Sets of NIC/1/2/3 7217 (GRISM Survey of Three Young
Clusters)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the young clusters called the NGC-2264 and NGC-2024.
Although photometric surveys have been used to great success in identifying
members of embedded star clusters, significant uncertainty surrounds the
mapping of broadband photometry with masses and ages of the stars. As
described in 2.1, the acquisition and re-acquisition for the first
iteration of this proposal failed, and the take data flag remained down for
42 observations. Ot herwise, the remaining observations were completed as
planned, and further no problems were reported.

1.11 Completed NIC/1/2/3 7368 (Infrared H_2 imaging of the highly
symmetric proto-stellar jets HH212 and HH111)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make infrared observations of the jets on the Herbig-Harow Object
HH212-Cent to determine the structure of faint reflection nebulae seen
around the jet driving sources. This is to determine whether these are
cavities excavated by the molecular outflows, or the upper surface of a
large-scale disk around the source. The observations were complete as
planned, and no anomalies were reported.

1.12 Completed NIC/2 7228 (Imaging and Polarimetry of YSO'S)

The Near Infrared Camera (Camera Two) was used to investigate the
young stellar object HH1-2-1 with coronagraphic imaging, polarimetry, and
line imaging. The observations were completed as planned, and no problems
were reported.

1.13 Completed NIC/1/2/3 7224 (Photometry of the 3C324 Cluster and
Line/Off Line of the Radio galaxy)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make photometric observations of the radio galaxy cluster 3C324P2.
Spatially-resolved IR photometry of this aligned radio galaxy and its
surrounding cluster of E class galaxies should be an important step in our
understanding of the alignment effect in powerful radio galaxies and in our
study of the passive evolution of the oldest systems. The observations
were completed as scheduled, and no problems were reported.

1.14 Completed STIS/CCD 7711 (STIS CCD G750L Fringing Flats.)

The Space Telescope Imaging Spectrograph (CCD) was used to
investigate and monitor the STIS CCD flat-field fringing in the G750L
grating at its nominal wavelength setting {7751A}. WAVECALs were also
taken at the same gain and wavelength setting. Typical S/N = 100 for each
integration, and gain = 4 on each. The observations were executed as
scheduled, and no anomalies were noted.

1.15 Completed STIS/CCD 7695 (NICMOS Grism Wavelength Calibration)

The Space Telescope Imaging Spectrograph (CCD) was used to perform a
grism wavelength calibration by making observations of standard object
HB12. A dark calibration image was also taken. The observations were
completed as scheduled, and no problems were reported.

1.16 Completed 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.

1.17 Completed Three Sets of WF/PC-2 7620 (WF/PC-2 Cycle 7 Standard Darks)

The WF/PC-2 was used to make a series of Cycle 7 standard dark
calibration images. This dark calibration program obtains dark frames
every week in order to provide data for the ongoing calibration of the CCD
dark current rate, and to monitor and characterize the evolution of hot
pixels. The observations were executed as scheduled, and no anomalies were
noted.

1.18 Completed NIC/3 7919 (NICMOS Camera 3 Campaign Snapshots)

The Near Infrared Camera (Camera Three) was used to make images of
galaxies NGC-4373, NGC-404, NGC-6946 and NGC-221 as part of the NICMOS
Camera 3 campaign snapshots. The proposal is to obtain wide field snapshot
images of nearby galaxies in Paschen Alpha which is inaccessible from the
ground. The observations were executed as planned, and no anomalies were
reported.

1.19 Completed Three Sets of NIC/1/2/3 7235 (Observations of the Hubble
Deep Field)

The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the Hubble Deep Field area HDF-123645. This program
observes a portion of the Hubble Deep Field with all three NICMOS cameras
in the F160W and F110W filters to produce infrared images equivalent in
depth to the existing WF/PC-2 HDF images. The observations were executed
as scheduled, and no anomalies were noted.

1.20 Completed Three Sets of STIS/CCD 7918 (STIS CCD Pure Parallels for
NIC/3 HDF Spec)

The Space Telescope Imaging Spectrograph (CCD) was used to make pure
parallel, ultraviolet, slitless, spectrographic observations with the prime
Hubble Deep Field (HDF) observations. This proposal will run during the
orbits devoted to NICMOS HDF prime proposal 7235. The observations were
completed as planned, and no problems were reported.

1.21 Completed STIS/CCD 7634 (CCD Flat-Field Stability and Cosmetic
Defect Fraction)

The Space Telescope Imaging Spectrograph (CCD) was used to
investigate and monitor the STIS CCD imaging flat-field stability and
cosmetic defects over monthly periods though out Cycle 7. A bias
calibration image was also taken. The observations were executed as
scheduled, and no anomalies were noted.

1.22 Completed STIS/CCD 7900 (STIS CCD Pure Parallels for NIC/3 HDF)

The Space Telescope Imaging Spectrograph (CCD) was used to make pure
parallel, ultraviolet, slitless, observations with the NIC/3 Camera. This
proposal will run during the orbits devoted to NICMOS HDF prime proposal
7235. The observations were completed as scheduled, and no anomalies were
reported.

1.23 Completed NIC/3 7816 (NIC/3 Photometric Zero Point)

The Near Infrared Camera (Camera Three) was used to make
observations of standard star CSKD12-Cal in order to study the zero point
flux for a set of filters. The NIC/3 intra-pixel sensitivity will also be
measured. The observations were executed as scheduled, and no anomalies
were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 38
Successful : 36

The acquisition at 016/151546Z lost fine lock twice before finally
achieving it on the third try. HSTAR 6315 was written. The proposal
described in 1.7 may have been affected.

Per HSTAR 6318, the guide star acquisition scheduled for 017/072521Z
failed when the search radius limit was exceeded. The re-acquisition
scheduled at 017/085942Z also failed. Maps obtained do not verify a
pointing error. The proposal detailed in 1.10 was affected.

The acquisition at 019/010502Z defaulted to fine lock on FGS-3 only.
HSTAR 6320 was written. The proposal described in 1.3 may have been
affected.

Scheduled Reacquisitions : 26
Successful : 25

2.2 FHST Updates:

Scheduled : 70
Successful : 69

As described in HSTAR 6317, the update scheduled at 017/015439Z
failed with no impact to science.

2.3 Operations Notes:

Database 53.B was installed on the back-up rail at 017/01Z and was
analyzed with the real time system throughout the midnight shift. No
problems were detected and the database was then installed on the prime
rail at 017/1230Z. It was then used throughout the long weekend with no
problems.

The STIS bad pixel table was uplinked at 017/0431Z.

At 017/011006Z, NICMOS suspended while in the observe mode during
the proposal described in 1.9. A status buffer message indicated that the
cause was an Intel exception. The appropriate personnel were notified and
a memory dump was performed. The event signature was similar to another
event which occurred on day 270 of last year. NICMOS was therefore
successfully recovered at 017/0701Z per Operation Request 13512. HSTAR
6316 was written. Proposals mentioned in 1.3, 1.5, and 1.6 were also
affected.

At 020/034023Z, the STIS EMC experienced a re-try. HSTAR 6323 was
written.

As described in HSTAR 6322, the STIS MAMA2 reset at 020/080052Z
while the high voltage was off. There was no impact to science. Recovery
will be via the SMS.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.

/DMH