Hubble Space Telescope Daily Report #3139 – 17 Jun 2002

HUBBLE SPACE TELESCOPE

DAILY REPORT # 3139

PERIOD COVERED: DOY 168

OBSERVATIONS SCHEDULED:(see HSTARS below for possible observation problems)

STIS/CCD/MA2 8614

NUV Extension of the Arcturus Project: Probing the Onset of Chromospheric
Heating.

The Space Telescope Imaging Spectrograph (CCD and MA2) was used to observe two
stars that have multi-wavelength atlases at resolutions high enough to resolve
dynamically interesting line structure: the Sun {G2 V} and Arcturus {K2 III}.

STIS 8672

Establishing the Gaseous Phases of Galaxies Following the Epoch of Star
Formation

We propose an ambitious program designed to: {1} establish if high ionization,
metal-rich halos/coronae were in place as early as z~1, which would imply that
extended, early-epoch, galactic halos result from reprocessed galactic gas and
that the kinematics are mechanically driven; {2} obtain the first comparison of
the relative kinematics of low and high ionization species in z~1 galaxies,
covering a wide range of N{HI} environments and MgII kinematic spreads up to
~400 km/s; {3} discriminate between single-phase and multi-phase
ionization, and
therefore spatial, absorbing structures {eg. MgII clouds embedded in diffuse
high ionization halos}; and {4} place constraints on the gas-phase metallicites
in early-epoch galaxies. We propose to obtain STIS R=30, 000 {Delta v = 10
km/s}
spectra of five bright quasars, for which the FOS/HST data are fully analyzed.
Our observational goal is to resolve the absorption profiles of several low,
intermediate, and high ionization species, including OVI, OI, NV, NIII, CIV,
CIII, CII, SiIV, SiIII, and SiII, in 18 MgII absorption systems covering
0.5<=z<=1.3. We incorporate our high signal-to-noise HIRES/Keck {Delta v=6.6 km/s} profiles of MgII, MgI, and FeII of the low ionization absorbing gas, and our database of the absorbing galaxy luminosities, colors, and impact parameters.

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 USEAFTER
date/time mark.

STIS/CCD 8902

Dark Monitor-Part 2.

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

STIS/CCD 8904

Bias Monitor-Part 2.

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

STIS/CCD/MA1/MA2 8916

Spectroscopic Sensitivity Workout: First-order Modes.

The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was used to measure
the basic sensitivity for all supported MAMA and CCD first-order spectroscopic
modes. Sensitivity measurements are done for all supported tilts of the
gratings, at a S/N suitable to any particular setting, in order to get all
measurements done in a reasonable number of orbits but still get a very
accurate
sensitivity measurement.

STIS/MA1/MA2 8920

Cycle 10 MAMA Dark Measurements.

The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to perform the
routine monitoring of the MAMA detector dark noise, and is the primary means of
checking on health of the MAMA detectors systems through frequent monitoring of
the background count rate.

WFPC2 8934

WFPC2 Decontaminations and Associated Observations Pt. 3/3

This proposal is for the monthly WFPC2 decons. Also included are 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 8935

Cycle 10 Standard Darks.

The WF/PC-2 was used to obtain 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. Over an extended period these data
will also provide a monitor of radiation damage to the CCDs.

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.

WF/PC-2 8939

Cycle 10 Internal Monitor.

The WF/PC-2 was used to calibrate the internal monitor, to be run weekly to
monitor the health of the cameras.

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.

NICMOS 9269

NICMOS Parallel Thermal Background

NICMOS Camera 3 pure parallel exposures in the F222M filter will be
obtained for
the entire duration of SMOV to establish the stability of the
HST+NCS+Instrument
thermal emission.

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.

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.

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.

ACS/CAL 9558

ACS weekly Test

This program consists of basic tests to monitor, the read noise, the
development
of hot pixels and test for any source of noise in ACS CCD detectors. This
programme will be executed once a day for the entire lifetime of ACS.

ACS/WFC 9575

Default {Archival} Pure Parallel Program.

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

ACS/WFC 9584

ACS Default {Archival} Pure Parallel Program II.

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

FLIGHT OPERATIONS SUMMARY:

HSTARS: (For details http://hst-sers.hst.nasa.gov/SERS/HST/HSTAR.nsf)

8705 – Equation Display Utility Does not show “<" symbol @ 168/1800z The Equation Display Utility does not show the "less than" symbol ("<") in equation descriptions. The attachments show an equation as displayed on the CCS-A EQUATION EDITOR (which includes the "<" symbols), and on the EQUATION DISPLAY UTILITY (which does not show the "<" symbol). Under investigation.

COMPLETED OPS REQs:

16788-0 – Gyro Motor Current Max Count Limit Change @ 168/1521z
Successfully patched Gyro 3 motor current timer limit from
90 seconds to 300 seconds (OR 16788). During a recent anomaly
Gyro 3 motor current indicated a value near the existing gyro
motor current maximum error count of 3600 counts. Project has
directed this increase to 12000 counts to avoid ZGSP entry.
The DMS configuration tracking table will be updated to reflect
this change.

OPS NOTES EXECUTED: None

                       SCHEDULED     SUCCESSFUL    FAILURE TIMES

FGS GSacq                 6                 6

FGS REacq                 9                 9

FHST Update               17              16                  168/2143z

LOSS of LOCK             None

Operations Notes:

SIGNIFICANT EVENTS:

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