HUBBLE SPACE TELESCOPE - Continuing to collect World Class
Science
DAILY REPORT #
4503
PERIOD COVERED: UT December 7, 8 & 9, 2007 (DOY
341,342,343)
OBSERVATIONS SCHEDULED
NIC1/NIC2/NIC3 8795
NICMOS Post-SAA calibration -
CR Persistence Part 6
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
USEAFTER date/time mark. The
keyword 'USEAFTER=date/time' will also
be added to the header of each
POST-SAA DARK frame. The keyword must be populated
with the time, in
addition to the date, because HST
crosses the SAA ~8 times per day so
each POST-SAA DARK will need to have
the appropriate time specified, for
users to identify the ones they need.
Both the raw and processed images
will be archived as POST-SAA DARKSs. Generally we expect that all NICMOS
science/calibration observations started within 50
minutes of leaving an
SAA will need such maps to remove the CR persistence from
the science i
mages. Each observation will need its
own CRMAP, as different SAA
passages leave different imprints on the
NICMOS detectors.
NIC1/NIC2/NIC3 8794
NICMOS Post-SAA calibration - CR Persistence Part 5
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
USEAFTER date/time mark. The
keyword 'USEAFTER=date/time' will also
be added to the header of each
POST-SAA DARK frame. The keyword must be populated
with the time, in
addition to the date, because HST
crosses the SAA ~8 times per day so
each POST-SAA DARK will need to have
the appropriate time specified, for
users to identify the ones they need.
Both the raw and processed images
will be archived as POST-SAA DARKs. Generally we expect that all NICMOS
science/calibration observations started within 50
minutes of leaving an
SAA will need such maps to remove the CR persistence from
the science
images. Each observation will need its
own CRMAP, as different SAA
passages leave different imprints on the
NICMOS detectors.
WFPC2 11361
Hubble Heritage Observations of Mars at 2007 Opposition
We will obtain images of Mars at opposition in December
2007.
ACS/SBC 11309
Chemical Composition of an Exo-Neptune
The recent discovery that the
its host star has presented us the
first chance to observationally study
ice giant formation beyond our
solar system {Gillon et al. 2007}. Using
Directors Discretionary time, we propose
to obtain a high-precision
light curve of the GJ 436 b transit
with the FGS in order to improve the
current radius determination for this
planet. Measuring a precise radius
for GJ 436 b will allow us to
ascertain whether the planet has a pure
water vapor or H/He envelope like
Uranus and Neptune. Knowing this will
constrain its formation and evolution and
help place our own solar
system ice giants in a broader
context. Additionally, a precise radius
for GJ 436 b will be a necessity
for interpreting the certain follow-up
observations of this unique system.
FGS 11213
Distances to Eclipsing M Dwarf Binaries
We propose HST FGS observations to measure accurate
distances of 5
nearby M dwarf eclipsing binary
systems, from which model-independent
luminosities can be calculated. These
objects have either poor or no
existing parallax measurements. FGS
parallax determinations for these
systems, with their existing dynamic
masses determined to better than
0.5%, would serve as model-independent anchor points for
the low-mass
end of the mass-luminosity diagram.
FGS 11210
The Architecture of Exoplanetary
Systems
Are all planetary systems coplanar? Concordance cosmogony
makes that
prediction. It is, however, a prediction
of extrasolar planetary system
architecture as yet untested by direct
observation for main sequence
stars other than the Sun. To provide
such a test, we propose to carry
out FGS astrometric
studies on four stars hosting seven companions. Our
understanding of the planet formation process
will grow as we match not
only system architecture, but formed
planet mass and true distance from
the primary with host star
characteristics for a wide variety of host
stars and exoplanet
masses. We propose that a series of FGS astrometric
observations with demonstrated 1 millisecond
of arc per- observation
precision can establish the degree of coplanarity and component true
masses for four extrasolar
systems: HD 202206 {brown dwarf+planet}; HD
128311 {planet+planet}, HD
160691 = mu Arae {planet+planet}, and HD
222404AB = gamma Cephei {planet+star}. In each case the companion is
identified as such by assuming that the
minimum mass is the actual mass.
For the last target, a known stellar binary system, the
companion orbit
is stable only if coplanar with
the AB binary orbit.
WFPC2 11202
The Structure of Early-type Galaxies: 0.1-100 Effective
Radii
The structure, formation and evolution of early-type
galaxies is still
largely an open problem in cosmology:
how does the Universe evolve from
large linear scales dominated by dark
matter to the highly non-linear
scales of galaxies, where baryons and
dark matter both play important,
interacting, roles? To understand the
complex physical processes
involved in their formation scenario,
and why they have the tight
scaling relations that we observe today
{e.g. the Fundamental Plane}, it
is critically important not only
to understand their stellar structure,
but also their dark-matter
distribution from the smallest to the largest
scales. Over the last three years the
SLACS collaboration has developed
a toolbox to tackle these issues
in a unique and encompassing way by
combining new non-parametric strong lensing techniques, stellar
dynamics, and most recently weak
gravitational lensing, with
high-quality Hubble Space Telescope imaging
and VLT/Keck spectroscopic
data of early-type lens systems.
This allows us to break degeneracies
that are inherent to each of these
techniques separately and probe the
mass structure of early-type
galaxies from 0.1 to 100 effective radii.
The large dynamic range to which lensing
is sensitive allows us both to
probe the clumpy substructure of
these galaxies, as well as their
low-density outer haloes. These methods
have convincingly been
demonstrated, by our team, using smaller
pilot-samples of SLACS lens
systems with HST data. In this
proposal, we request observing time with
WFPC2 and NICMOS to observe 53 strong lens systems from
SLACS, to obtain
complete multi-color imaging for each
system. This would bring the total
number of SLACS lens systems to 87
with completed HST imaging and
effectively doubles the known number of
galaxy-scale strong lenses. The
deep HST images enable us to fully
exploit our new techniques, beat down
low-number statistics, and probe the structure
and evolution of
early-type galaxies, not only with a
uniform data-set an order of
magnitude larger than what is available
now, but also with a fully
coherent and self-consistent
methodological approach!
NIC2 11157
NICMOS Imaging Survey of Dusty Debris Around
Nearby Stars Across the
Stellar Mass Spectrum
Association of planetary systems with dusty debris disks
is now quite
secure, and advances in our
understanding of planet formation and
evolution can be achieved by the
identification and characterization of
an ensemble of debris disks
orbiting a range of central stars with
different masses and ages. Imaging debris
disks in starlight scattered
by dust grains remains technically
challenging so that only about a
dozen systems have thus far been
imaged. A further advance in this field
needs an increased number of imaged
debris disks. However, the technical
challenge of such observations, even with
the superb combination of HST
and NICMOS, requires the best
targets. Recent HST imaging investigations
of debris disks were
sample-limited not limited by the technology used.
We performed a search for debris disks from a IRAS/Hipparcos cross
correlation which involved an exhaustive
background contamination check
to weed out false excess stars.
Out of ~140 identified debris disks, we
selected 22 best targets in terms of
dust optical depth and disk angular
size. Our target sample represents
the best currently available target
set in terms of both disk
brightness and resolvability. For example, our
targets have higher dust optical depth,
in general, than newly
identified Spitzer disks. Also, our
targets cover a wider range of
central star ages and masses than
previous debris disk surveys. This
will help us to investigate planetary
system formation and evolution
across the stellar mass spectrum. The
technical feasibility of this
program in two-gyro mode guiding has
been proven with on- orbit
calibration and science observations during
HST cycles 13, 14, and 15.
NIC2 11142
Revealing the Physical Nature of Infrared Luminous
Galaxies at 0.3
We aim to determine physical properties of IR luminous
galaxies at
0.3<z<2.7 by requesting coordinated HST/NIC2 and
MIPS 70um observations
of a unique, 24um flux- limited
sample with complete Spitzer mid-IR
spectroscopy. The 150 sources investigated
in this program have S{24um}
> 0.8mJy and their mid-IR spectra have already provided
the majority
targets with spectroscopic redshifts {0.3<z<2.7}. The proposed
150~orbits of NIC2 and 66~hours of MIPS 70um will provide
the physical
measurements of the light distribution at
the rest-frame ~8000A and
better estimates of the bolometric
luminosity. Combining these
parameters together with the rich suite of
spectral diagnostics from the
mid-IR spectra, we will {1} measure
how common mergers are among LIRGs
and ULIRGs
at 0.3<z<2.7, and establish if major mergers are the drivers
of z>1 ULIRGs,
as in the local Universe. {2} study the co-evolution of
star formation and blackhole accretion by investigating the relations
between the fraction of starburst/AGN
measured from mid-IR spectra vs.
HST morphologies, L{bol} and z. {3} obtain the current best estimates of
the far- IR emission, thus L{bol} for this sample, and establish if the
relative contribution of mid-to- far IR
dust emission is correlated with
morphology {resolved vs. unresolved}.
WFPC2 11134
WFPC2 Tidal Tail Survey: Probing Star Cluster Formation on
the Edge
The spectacular HST images of the interiors of merging
galaxies such as
the Antennae and NGC 7252 have
revealed rich and diverse populations of
star clusters created over the
course of the interaction. Intriguingly,
our WFPC2 study of tidal tails in
these and other interacting pairs has
shown that star cluster birth in the
tails does not follow a similarly
straightforward evolution. In fact, cluster
formation in these
relatively sparse environments is not
guaranteed -- only one of six
tails in our initial study showed
evidence for a significant population
of young star clusters. The tail
environment thus offers the opportunity
to probe star cluster formation on
the edge of the physical parameter
space {e.g., of stellar and gas mass,
density, and pressure} that
permits it to occur. We propose to
significantly extend our pilot sample
of optically bright, gas-rich
tidal tails by a factor of 4 in number to
include a more diverse population of
tails, encompassing major and minor
mergers, gas-rich and gas-poor tails, as
well as early, late, and merged
interaction stages. With 21 orbits of HST
WFPC2 imaging in the F606W and
F814W filters, we can identify, roughly age-date, and
measure sizes of
star clusters to determine what
physical parameters affect star cluster
formation. WFPC2 imaging has been used
effectively in our initial study
of four mergers, and it will be
possible in this program to reach
similar limits of Mv=-8.5
for each of 16 more tails. With the much
larger sample we expect to isolate
which factors, such as merger stage,
HI content, and merger mass ratio, drive the formation of
star clusters.
WFPC2 11130
AGNs with Intermediate-mass Black
Holes: Testing the Black Hole-Bulge
Paradigm, Part II
The recent progress in the study of central black holes in
galactic
nuclei has led to a general consensus
that supermassive {10^6-10^9 solar
mass} black holes are closely
connected with the formation and
evolutionary history of large galaxies,
especially their bulge
component. Two outstanding issues,
however, remain unresolved. Can
central black holes form in the absence
of a bulge? And does the mass
function of central black holes extend
below 10^6 solar masses?
Intermediate-mass black holes {<10^6 solar masses}, if
they exist, may
offer important clues to the nature
of the seeds of supermassive black
holes. Using the SDSS, our group has
successfully uncovered a new
population of AGNs
with intermediate-mass black holes that reside in
low-luminosity galaxies. However, very little
is known about the
detailed morphologies or structural
parameters of the host galaxies
themselves, including the crucial question
of whether they have bulges
or not. Surprisingly, the majority
of the targets of our Cycle 14 pilot
program have structural properties
similar to dwarf elliptical galaxies.
The statistics from this initial study, however, are
really too sparse
to reach definitive conclusions on
this important new class of black
holes. We wish to extend this study
to a larger sample, by using the
Snapshot mode to obtain WFPC2 F814W images from a parent
sample of 175
AGNs with intermediate-mass black
holes selected from our final SDSS
search. We are particularly keen to
determine whether the hosts contain
bulges, and if so, how the fundamental
plane properties of the host
depend on the mass of their central
black holes. We will also
investigate the environment of this unique
class of AGNs.
WFPC2 11124
The Origin of QSO Absorption Lines from QSOs
We propose using WFPC2 to image the fields of 10 redshift z ~ 0.7
foreground {FG} QSOs
which lie within ~29-151 kpc of the sightlines to
high-z background {BG} QSOs. A surprisingly high fraction of the BG QSO
spectra show strong MgII
{2796,2803} absorption lines at precisely the
same redshifts
as the FG QSOs. The high resolution capabilities of
WFPC2
are needed to understand the origin
of these absorption systems, in two
ways. First, we wish to explore the
FG QSO environment as close as
possible to the position of the BG QSO,
to search for interloping group
or cluster galaxies which might be
responsible for the absorption, or
irregularly shaped post-merger debris
between the FG and BG QSO which
may indicate the presence of large
amount of disrupted gas along a
sightline. Similarly, high resolution
images are needed to search for
signs of tidal interactions between
any galaxies which might be found
close to the FG QSO. Such features
might provide evidence of young
merging events causing the start of QSO
duty cycles and producing
outflows from the central AGN. Such
winds may be responsible for the
observed absorption lines. Second, we
seek to measure the intrinsic
parameters of the FG QSO host galaxy, such
as luminosity and morphology,
to correlate with the properties
of the MgII absorption lines. We wish
to observe each field through the
F814W filter, close to the rest-frame
B-band of the FG QSO. These blue data can reveal
enhanced star formation
regions close to the nucleus of the
host galaxy, which may be indicative
of galaxy mergers with the FG QSO
host. The FG QSO environment offers
quite a different set of phenomena
which might be responsible for MgII
absorption, providing an important
comparison to studies of MgII
absorption from regular field galaxies.
WFPC2 11084
Probing the Least Luminous Galaxies in the Local Universe
We propose to obtain deep color-magnitude data of eight
new Local Group
galaxies which we recently discovered:
Andromeda XI, Andromeda XII, and
Andromeda XIII {satellites of M31}; Canes Venatici I, Canes Venatici II,
Hercules, and Leo IV {satellites of the Milky Way}; and
Leo T, a new
"free-floating" Local
Group dwarf spheroidal with evidence for recent
star formation and associated H I
gas. These represent the least
luminous galaxies known at *any* redshift, and are the only accessible
laboratories for studying this extreme
regime of galaxy formation. With
deep WFPC-2 F606W and F814W pointings at their centers, we will
determine whether these objects contain
single or multiple age stellar
populations, as well as whether these
objects display a range of
metallicities.
WFPC2 11029
WFPC2 CYCLE 15 Intflat Linearity
Check and Filter Rotation Anomaly
Monitor
Intflat observations will be taken to
provide a linearity check: the
linearity test consists of a series of intflats in F555W, in each gain
and each shutter. A combination of intflats, visflats, and earthflats
will be used to check the
repeatability of filter wheel motions.
{Intflat sequences tied to decons, visits 1-18 in prop 10363, have been
moved to the cycle 15 decon proposal xxxx for easier
scheduling.} Note:
long-exposure WFPC2 intflats
must be scheduled during ACS anneals to
prevent stray light from the WFPC2 lamps
from contaminating long ACS
external exposures.
WFPC2 11002
A Census of LIRGs in Clusters of
Galaxies in the First Half of the
Universe from the IRAC Shallow Survey
The incidence of LIRGs and ULIRGs is roughly two orders of magnitude
higher in the field at redshift z > 1, and at these redshifts
such
objects dominate the global star
formation activity. Mergers which fuel
such activity might be expected to
enhance the frequency of LIRGs in
dense environments. We propose to use
MIPS to obtain a census of LIRGs
in z > 1 galaxy clusters from a
well defined sample found in the IRAC
Shallow Survey. Supporting IRAC and HST ACS
data are also requested.
WFPC2 10915
ACS Nearby Galaxy Survey
Existing HST observations of nearby galaxies comprise a
sparse and
highly non-uniform archive, making
comprehensive comparative studies
among galaxies essentially
impossible. We propose to secure HST's
lasting impact on the study of nearby
galaxies by undertaking a
systematic, complete, and carefully
crafted imaging survey of ALL
galaxies in the Local Universe outside
the Local Group. The resulting
images will allow unprecedented
measurements of: {1} the star formation
history {SFH} of a >100 Mpc^3 volume
of the Universe with a time
resolution of Delta[log{t}]=0.25; {2}
correlations between spatially
resolved SFHs
and environment; {3} the structure and properties of thick
disks and stellar halos; and {4} the
color distributions, sizes, and
specific frequencies of globular and
disk clusters as a function of
galaxy mass and environment. To reach
these goals, we will use a
combination of wide-field tiling and
pointed deep imaging to obtain
uniform data on all 72 galaxies within
a volume-limited sample extending
to ~3.5 Mpc,
with an extension to the M81 group. For each galaxy, the
wide-field imaging will cover out to ~1.5
times the optical radius and
will reach photometric depths of at
least 2 magnitudes below the tip of
the red giant branch throughout the
limits of the survey volume. One
additional deep pointing per galaxy will
reach SNR~10 for red clump
stars, sufficient to recover the
ancient SFH from the color-magnitude
diagram. This proposal will produce
photometric information for ~100
million stars {comparable to the number
in the SDSS survey} and uniform
multi- color images of half a square
degree of sky. The resulting
archive will establish the fundamental
optical database for nearby
galaxies, in preparation for the shift
of high- resolution imaging to
the near-infrared.
WFPC2 10890
Morphologies of the Most Extreme High-Redshift
Mid-IR-Luminous Galaxies
The formative phase of the most massive galaxies may be
extremely
luminous, characterized by intense star-
and AGN-formation. Till now,
few such galaxies have been
unambiguously identified at high redshift,
restricting us to the study of low-redshift ultraluminous infrared
galaxies as possible analogs. We have
recently discovered a sample of
objects which may indeed represent this
early phase in galaxy formation,
and are undertaking an extensive multiwavelength study of this
population. These objects are bright at
mid-IR wavelengths
{F[24um]>0.8mJy}, but deep
ground based imaging suggests extremely faint
{and in some cases extended}
optical counterparts {R~24-27}. Deep K-band
images show barely resolved galaxies.
Mid-infrared spectroscopy with
Spitzer/IRS reveals that they have redshifts
z ~ 2-2.5, suggesting
bolometric luminosities ~10^{13-14}Lsun! We propose to obtain deep ACS
F814W and NIC2 F160W images of these sources and their
environs in order
to determine kpc-scale
morphologies and surface photometry for these
galaxies. The proposed observations will
help us determine whether these
extreme objects are merging systems,
massive obscured starbursts {with
obscuration on kpc
scales!} or very reddened {locally obscured} AGN
hosted by intrinsically low-luminosity
galaxies.
ACS/SBC 10815
The Blue Hook Populations of Massive Globular Clusters
Blue hook stars are a class of hot {~35,000 K} subluminous horizontal
branch stars that have been recently
discovered using HST ultraviolet
images of the globular clusters omega Cen and NGC 2808. These stars
occupy a region of the HR diagram that
is unexplained by canonical
stellar evolution theory. Using new
theoretical evolutionary and
atmospheric models, we have shown that the
blue hook stars are very
likely the progeny of stars that
undergo extensive internal mixing
during a late helium core flash on the
white dwarf cooling curve. This
"flash mixing" produces
an enormous enhancement of the surface helium
and carbon abundances, which
suppresses the flux in the far ultraviolet.
Although flash mixing is more likely to occur in stars
that are born
with high helium abundances, a high
helium abundance, by itself, does
not explain the presence of a blue
hook population - flash mixing of the
envelope is required. We propose ACS
ultraviolet {SBC/F150LP}
observations of the five additional globular
clusters for which the
presence of blue hook stars is suspected
from longer wavelength
observations. Like omega Cen
and NGC 2808, these five targets are also
among the most massive globular
clusters, because less massive clusters
show no evidence for blue hook
stars. Because our targets span 1.5 dex
in metallicity,
we will be able to test our prediction that flash-mixing
should be less drastic in metal-rich
blue hook stars. In addition, our
observations will test the hypothesis that
blue hook stars only form in
globular clusters massive enough to
retain the helium-enriched ejecta
from the first stellar generation.
If this hypothesis is correct, then
our observations will yield
important constraints on the chemical
evolution and early formation history in
globular clusters, as well as
the role of helium self-enrichment
in producing blue horizontal branch
morphologies and multiple main sequence
turnoffs. Finally, our
observations will provide new insight into
the formation of the hottest
horizontal branch stars, with implications
for the origin of the hot
helium-rich subdwarfs
in the Galactic field.
WFPC2 10798
Dark Halos and Substructure from Arcs & Einstein Rings
The surface brightness distribution of extended
gravitationally lensed
arcs and Einstein rings contains
super-resolved information about the
lensed object, and, more excitingly,
about the smooth and clumpy mass
distribution of the lens galaxies. The
source and lens information can
non-parametrically be separated, resulting in a
direct "gravitational
image" of the inner
mass-distribution of cosmologically-distant galaxies
{Koopmans 2005; Koopmans et
al. 2006 [astro-ph/0601628]}. With this goal
in mind, we propose deep HST
ACS-F555W/F814W and NICMOS-F160W WFC
imaging of 20 new gravitational-lens
systems with spatially resolved
lensed sources, of the 35 new lens
systems discovered by the Sloan Lens
ACS Survey {Bolton et al. 2005} so far, 15 of which are
being imaged in
Cycle-14. Each system has been selected
from the SDSS and confirmed in
two time- efficient HST-ACS
snapshot programs {cycle 13&14}.
High-fidelity multi-color HST images are required {not
delivered by the
420s snapshots} to isolate these lensed
images {properly cleaned,
dithered and extinction-corrected} from
the lens galaxy surface
brightness distribution, and apply our
"gravitational maging" technique.
Our sample of 35 early-type lens galaxies to date is by
far the largest,
still growing, and most uniformly
selected. This minimizes selection
biases and small-number statistics,
compared to smaller, often
serendipitously discovered, samples. Moreover,
using the WFC provides
information on the field around the lens,
higher S/N and a better
understood PSF, compared with the HRC, and
one retains high spatial
resolution through drizzling. The sample
of galaxy mass distributions -
determined through this method from the
arcs and Einstein ring HST
images - will be studied to: {i} measure the smooth mass distribution of
the lens galaxies {dark and
luminous mass are separated using the HST
images and the stellar M/L values
derived from a joint stellar-dynamical
analysis of each system}; {ii} quantify
statistically and individually
the incidence of mass-substructure
{with or without obvious luminous
counter- parts such as dwarf galaxies}.
Since dark-matter substructure
could be more prevalent at higher redshift, both results provide a
direct test of this prediction of the
CDM hierarchical
structure-formation model.
WFPC2 10787
Modes of Star Formation and Nuclear Activity in an Early
Universe
Laboratory
Nearby compact galaxy groups are uniquely suited to
exploring the
mechanisms of star formation amid repeated
and ongoing gravitational
encounters, conditions similar to those of
the high redshift universe.
These dense groups host a variety of modes of star
formation, and they
enable fresh insights into the role of
gas in galaxy evolution. With
Spitzer mid-IR observations in hand, we have begun to
obtain high
quality, multi-wavelength data for a
well- defined sample of 12 nearby
{<4500km/s} compact groups covering the full range of
evolutionary
stages. Here we propose to obtain
sensitive BVI images with the ACS/WFC,
deep enough to reach the turnover of
the globular cluster luminosity
function, and WFPC2 U-band and ACS
H-alpha images of Spitzer-identified
regions hosting the most recent star
formation. In total, we expect to
detect over 1000 young star clusters
forming inside and outside
galaxies, more than 4000 old globular
clusters in >40 giant galaxies
{including 16 early-type galaxies},
over 20 tidal features,
approximately 15 AGNs,
and intragroup gas in most of the 12 groups.
Combining the proposed ACS images with Chandra
observations, UV GALEX
observations, ground-based H-alpha imaging,
and HI data, we will conduct
a detailed study of stellar
nurseries, dust, gas kinematics, and AGN.
FLIGHT OPERATIONS SUMMARY:
Significant Spacecraft Anomalies: (The following are
preliminary reports
of potential non-nominal
performance that will be investigated.)
HSTARS:
11094 GSACQ(2,3,2) fails to RGA
control while LOS @ 341/23:09:43z
Upon
acquisition of signal at 341/23:55:19z, QF2STOPF (FGS 2 stop flag)
was set and #44 commands did not update from their values
prior to LOS,
indicating that GSACQ(2,3,2) at 23:09:43z did not succeed.
OBAD map at
23:17:47z had
RSS error of 7.08 arcseconds. Further information
after
engineering recorder dump.
11095 REacq(1,2,2) failed to RGA Hold @ 343/16:19z
During LOS, REacq(1,2,2)
scheduled at 343/16:19:06z failed to RGA Hold.
At AOS
343/17:28:40z flags indicated the REacq failed due to
receiving
stop flags QF1STOPF on FGS 1 and QF2STOPF on FGS 2.
COMPLETED OPS REQUEST: (None)
COMPLETED OPS NOTES: (None)
SCHEDULED
SUCCESSFUL
FGS GSacq 23 22
FGS REacq 19 18
OBAD with Maneuver
86 86
SIGNIFICANT EVENTS: (None)
-
____________________________________________________________
Lynn F. Bassford
Hubble Space Telescope
CHAMP
CHAMP Flight Operations Team Manager
Lockheed Martin
NASA GSFC PH#: 301-286-2876
"The Hubble Space Telescope is the
astronomical observatory and key to unlocking the most cosmic mysteries of the
past, present and future." - 7/26/6