Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ftp/observing/status_reports/hst_status_05_19_02 Дата изменения: Mon May 20 16:12:48 2002 Дата индексирования: Sat Dec 22 19:31:18 2007 Кодировка: Поисковые слова: cone nebula

HUBBLE SPACE TELESCOPE

DAILY REPORT # 3119

PERIOD COVERED: 0000Z (UTC) 05/17/02 - 0000Z (UTC) 05/19/02

OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

ACS/HFC 9560

CCD Linearity Check.

The Advanced Camera for Surveys (HFC) was used to obtain several exposures with
both the to delineate linearity at both low and high signal levels. This is an
exploratory set of observations aimed at basic instrument characterization. It
is expected that positive results in some areas may serve to enable
particularly
demanding science observations: negative indications could lead to the need for
corrections to be developed for some signal regimes. Each gain setting can have
unique linearity issues, therefore exploratory observations with gains =1, 2, 4
e-/DN will be performed. Another specific goal is to obtain data that will
allow
accurate photometry to be extracted for point sources that saturate the

ACS/WFC 9584

ACS Default {Archival} Pure Parallel Program II.

The Advanced Camera for Surveys (WFC) was used to test ACS pure parallels.

ACS/WFC 9575

Default {Archival} Pure Parallel Program.

The Advanced Camera for Surveys (WFC) was used to test ACS pure parallels in

ACS/WFC/HRC 8947

Weekly Test.

The Advanced Camera for Surveys (WFC and HRC) was used to perform basic
tests to
monitor, the read noise, the development of hot pixels and test for any source
of noise in ACS CCD detectors. This program will be executed at least once
a day
for the entire lifetime of ACS.

GTO/ACS 9290

The Nature of Galaxies at z > 4.

The Morphological, Photometric, and Spectroscopic Properties of Intermediate
Redshift Cluster.New and fundamental constraints on the evolutionary state of
high redshift clusters will be made by obtaining deep, multiband images
{SDSS g,
r, i, z} over the central 1.5 Mpc regions of seven distant clusters in the
range
0.76 < z < 1.27. In addition, slitless spectroscopy, using the WFC GRISM, will
be performed over the central 750 kpc region of each system galaxy.

NICMOS 8993

NICMOS Imaging of NGC 1241 {the Cone nebulae} and IRAS19297-0406

The purpose of this program is to obtain images that display the panchromatic
capability of HST with refurbishment of NICMOS. We will obtain images of two
targets using NICMOS, and if possible, ACS as well. Images will be obtained
in J
and H and Paschen alpha. If ACS is unavailable images will be taken in K as
well. Two targets will be imaged. The ULIRG IRAS19297-0406 will be observed
under all circumstance. And one object from the list of the Cone Nebula {NGC
2264} and NGC 1241 will be observed. The latter will depend upon the result of

NICMOS 8790

NICMOS Post-SAA calibration - CR Persistence Part 1.

A new procedure proposed to alleviate the CR-persistence problem of NICMOS.
Dark frames will be obtained immediately upon exiting the SAA contour 23, and
every time a NICMOS exposure is scheduled within 50 minutes of coming out
of the
SAA. The darks will be obtained in parallel in all three NICMOS Cameras. The
POST-SAA darks will be non-standard reference files available to users with a

NICMOS 9316

SM3B NICMOS Early Release Observations

The purpose of this program is to obtain images that display the panchromatic
capability of HST with the refurbished NICMOS. We will obtain images of two
targets using NICMOS. Images will be obtained in J, H, and Paschen alpha. Two
targets will be imaged: 1. Eta Carinae, which will also be imaged in WFPC2 to
account for its variability; and 2. the edge-on galaxy NGC4013, for which
NICMOS
K-band images will be also obtained, and, in addition, Hubble Heritage WFPC2

NICMOS 1/2 8985

NICMOS Internal Flats.

This proposal obtains sequences of NICMOS camera 1 & 2 medium and wide band
filter flat fields, plus one orbit for selected Camera 3 filters. The
observations will be used to build high S/N NICMOS flat fields to enable the

STIS/CCD 9110

A Search for Kuiper Belt Object Satellites. The Space Telescope Imaging
Spectrograph (CCD) was used to investigate whether the large number of
collisions thought to have taken place in the primordial Kuiper belt suggest
that many Kuiper belt objects {KBOs} could have suffered binary-forming
collisions similar to that which formed the Pluto -- Charon binary.
Detection of
such KBO satellites would allow measurement of KBO masses, would help to
understand the past collisional environment of the Kuiper belt, and would
give a
context to the otherwise unique-seeming formation of the

STIS/CCD 8904

Bias Monitor-Part 2.

The Space Telescope Imaging Spectrograph (CCD) was used to monitor the bias in
the 1x1, 1x2, 2x1, and 2x2 bin settings at gain=1, and 1x1 at gain = 4 in order
to build up high-S/N superbiases and track the evolution of hot columns.

STIS/CCD 9066

Closing in on the Hydrogen Reionization Edge of the Universe.

The Space Telescope Imaging Spectrograph (CCD) was used in parallel constrain
the Hydrogen reionization edge in emission that marks the transition from a
neutral to a fully ionized IGM at a predicted redshifts.

STIS/CCD 8902

Dark Monitor-Part 2.

The Space Telescope Imaging Spectrograph (CCD) was used to monitor the darks.

STIS/CCD 9317

Pure Parallel Imaging Program: Cycle 10.

The Space Telescope Imaging Spectrograph (CCD) was used to perform the default
archival pure parallel program for STIS during cycle 10.

STIS/CCD 9077

Survey of the LMC Planetary Nebulae.

The Space Telescope Imaging Spectrograph (CCD) was used to perform a snapshot
survey of all known LMC planetary nebulae {PNe} in order to study the
co-evolution of the nebulae and their central stars, and to probe the chemical

STIS/CCD/MA1 8919

MAMA Sensitivity and Focus Monitor C10. The Space Telescope Imaging
Spectrograph
(CCD and MA1) was used to monitor the sensitivity of each MAMA grating mode to
detect any change due to contamination or other causes, and also to monitor the
STIS focus in a spectroscopic and an imaging mode.

STIS/CCD/MA1 9067

UV Detectability of Bright Quasars in the Sloan Fields.

The Space Telescope Imaging Spectrograph (CCD and MA1) was used to take MAMA
spectra of approximately 30 new, bright, high-redshift quasars in each of the
next three cycles.

STIS/MA1 8922

FUV-MAMA Cycle 10 Flats.

The Space Telescope Imaging Spectrograph (MA1) was used to obtain FUV-MAMA
observations of the STIS internal Krypton lamp to construct an FUV flat
applicable to all FUV modes.

STIS/MA1/MA2 9151

UV Snapshot Observation of Nearby Star Forming Galaxies.

The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to obtain FUV
and NUV images of nearby emission- line galaxies with existing star-formation
rate {SFR} measurements from their HAlpha flux. Recently, the use of the UV
flux
as a measure of SFR has gained much popularity for estimating SFRs at different
cosmic epochs. However, the SFR estimated from UV flux could be greatly biased
due to dust extinction. The KPNO International Spectroscopic Survey {KISS}
provides a large sample of nearby HAlpha-selected starforming galaxies for
which
rich optical spectra are available for measuring metallicity and dust
extinction
through line ratios. By observing a subset of nearby emission-line galaxies in
the KISS sample with the STIS FUV and NUV MAMA, a direct comparison between UV
and Halpha SFR estimates will be possible. This will allow us to understand the
effect of dust extinction on UV flux for star- forming galaxies over a wide
range of HAlpha luminosity, metallicity absolute magnitude, and B-V color . A
rough dust extinction curve will be constructed for such objects, making it
possible to test plausible dust extinction curves used in previous SFR studies
of the distant universe. Also, high-resolution UV images will allow us to
search
for plausible local counterparts to high redshift galaxies whose rest-frame UV
morphology is available from existing optical HST

WF/PC-2 9043

Cepheid Distances to Early-type Galaxies.

The WF/PC-2 was used to continue observations in the HST Key Project on the
Extragalactic Distance Scale and the HST project on the "Calibration of Nearby
Type Ia Supernovae'' that have greatly improved our knowledge of the Hubble
Constant by providing a solid zero point for the Tully- Fisher {TF}
relation and
Type Ia Supernovae {SNIa}. However, severe inconsistencies remain for distance
estimators to early-type galaxies such as surface brightness fluctuations
{SBF},
the planetary nebula luminosity function {PNLF}, the fundamental plane
{FP}, and
the globular cluster luminosity function {GCLF}. As a result, the distance to
the Virgo cluster core remains uncertain by as much as 20 determination is
directly affected by a lingering 0.1 mag {5 uncertainty in the photometric
calibration of the WFPC2. Resolving these issues is essential not only to firm
up the extragalactic distance scale, but also to understand the mass and
velocity structure of the local universe. SBF in particular is emerging as the
method of choice for mapping local velocity fields to 10, 000 kms because it
offers an order of magnitude less Malmquist bias than TF, and SNIa are too rare
to study large scale flows effectively. This project will tighten the
photometric calibration of the WFPC2, and provide a solid Cepheid

WF/PC-2 8940

Cycle 10 Earth Flats.

The WF/PC-2 was used to monitor flatfield stability by obtaining sequences of
Earth streak flats to construct high quality flat fields for the WF/PC-2 filter
set. These flat fields will allow mapping of the OTA illumination pattern and
will be used in conjunction with previous internal and external flats to

WF/PC-2 8933

Decontaminations and Associated Observations Pt. 2/3.

The WF/PC-2 was used for the monthly decons. Also included were instrument
monitors tied to decons: photometric stability check, focus monitor, pre- and
post-decon internals {bias, intflats, kspots, & darks}, UV throughput check,
VISFLAT sweep, and internal UV flat check.

WF/PC-2 9180

Gamma-ray Burst Progenitors: Probing Their Environment.

The WF/PC-2 was used to perform a target of opportunity observation of
gamma ray
burster (GRB), GRB-011121. GRB astronomy is a field maturing at a phenomenal
rate. Three important new observational and theoretical discoveries, formulated
over the last twelve months, allow the proposer to address new, and in many
cases, more sophisticated questions than could have been posed previously.
These
developments: the discovery of X-ray lines in GRB 991216; the observation that
N_H as deduced from X-ray afterglow are one to two orders of magnitude larger
than the dust extinction inferred from optical afterglow; and the growing
realization that the afterglow emission may exhibit features of dust echoes,
appear to offer unexpected and new diagnostics that will directly inform us
about the progenitor, the circum-progenitor material and the immediate

WF/PC-2 9318

POMS Test Proposal: WFII Parallel Archive Proposal Continuation.

The WF/PC-2 was used to perform the generic target version of the WFPC2
Archival
Pure Parallel program. The program was used to take parallel images of random
areas of the sky, following the recommendations of the Parallels Working
Group.

WFPC2 8938

WFPC2 CYCLE 9 SUPPLEMENTAL DARKS pt3/3.

This dark calibration program obtains 3 dark frames every day to provide data
for monitoring and characterizing the evolution of hot pixels.


FLIGHT OPERATIONS SUMMARY:

HSTARs:
8649 - 4 Forward Links outside Return Link SMS140
8650 - A string's AppServer lost connection @ 138/1005z
8651 - Battery 5 Temperature Out-of-limits @ 138/1705z
8652 - Unnecessary Gaps in SMS Scheduled TDRS Return Services @ 139/1709z
8653 - SMS Configures HST to the Wrong LGA @ 139/1706z

COMPLETED OPS REQs:
16770-0 - Adjust NICMOS PAM1 Tilts @ 137/1313z
16771-1 - Disabling of SMAC 21 @ 137/1750z
16774-0 - Clear ACS SBC MAMA HV inhibit flags @ 137/2141z

OPS NOTES EXECUTED:
1004-0 - Update Pressure-Based Battery Capacity Equations @ 137/1647z

SCHEDULED SUCCESSFUL
FGS GSacq 22 22
FGS REacq 20 20
FHST Update 54 54
LOSS of LOCK None

Operations Notes:

COMMENTS:
R/T OPS transferred to CCS-B string (HSTAR# 8650) @ 138/1026z
R/T OPS transferred back to CCS-A string @ 138/1344z

SIGNIFICANT FORTHCOMING EVENTS:

Continuation of Servicing Mission Orbital Verification and the gradual
resumption of normal science observations and calibrations.