Hubble Space Telescope Daily Report #3114 -13 May 2002

HUBBLE SPACE TELESCOPE

DAILY REPORT # 3114

PERIOD COVERED: 0000Z (UTC) 05/10/02 – 0000Z (UTC) 05/12/02

OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

NICMOS 8790

NICMOS Post-SAA calibration – CR Persistence Part 1.A new proceedure
proposed to alleviate the CR-persistence problem of NICMOS. Dark frames
will be obtained immediately upon exiting the SAA contour 23, and
everytime 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 8908

CCD Imaging Flats C10. The Space Telescope Imaging Spectrograph (CCD)
was used to investigate flat-field stability over a monthly period.

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.

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 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 generate new pipeline
superflats.

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.

NIC/1/2/3 8977

NICMOS Fine Optical Alignment.The Near Infrared Camera and Multi-Object
Camera (NIC1, NIC2 and NIC3) was used to perform a series of iterative
adjustments of the NICMOS pupil alignment mechanism to establish the
optical alignment in focus for cameras all three cameras and tilt for
camera 1. Specifically, this activity will be used to establish focus
monitoring techniques to accomplish the establishment {or
reconfirmation} of PAM focus and X/Y tilt.

NICMOS 8993

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
ground-based IR imaging of NGC 2264.

ACS/SBC 9008

MAMA Initial Turn-on and Anomalous Recovery Procedure.The Advance Camera
for Surveys SBC) was used for the initial turn-on of the ACS MAMA
detector and to permit recovery after an anomalous shutdown. Anomalous
shutdowns can occur as a result of bright object violations which
trigger the Bright Scene Detection or Software Global Monitors.
Anomalous shutdowns can also occur as a result of MAMA hardware
problems. The Initial MAMA turn-on/recovery from anomalous shutdown
consists of three tests: a signal processing electronics check, high
voltage ramp-up to an intermediate voltage, and high voltage ramp-up to
the full operating voltage. During each of the two high voltage
ramp-ups, diagnostics are performed during a dark ACCUM.

ACS/SBC 9009

MAMA Fold Analysis.The Advanced Camera for Science (SBC) was used to
perform a MAMA fold analysis for initial turn-on or anomalous recovery
of the MAMA detector.

FGS/1 9034

The Masses and Luminosities of Population II Stars.Fine Guidance Sensor
11R was used to observe the mass-luminosity relation {MLR} of Population
II stars of which very little is currently known. With the advent of the
Hipparcos Catalogue, improved distances to many spectroscopic binaries
known to be Pop II systems are now available. After surveying the
literature and making reasonable estimates of the secondary masses, we
find 13 systems whose minimum separation should be larger than the
resolution limit of FGS #1.

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.

WF/PC-2 9072

Dynamical Masses of White Dwarfs from Resolved Sirius-Like Binaries.The
WF/PC-2 was used to observe resolved “Sirius-like” systems containing
hot white-dwarf companions of cooler main-sequence stars. It is proposed
to image them annually in the UV.

STIS/CCD/MA1/MA2 9081

Accretion in the Planet-Forming Disks of the TW Hya Association.The
Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was used to
obtain high signal-to-noise, low resolution ultraviolet spectra of the
only two stars in the ~ 10 Myr old TW Hya association that are still
accreting to measure the mass accretion rate through their disks. With
these measurements proposers will be able to assess the gas content in
these disks which show clear signs that dust is rapidly evolving towards
planetesimals and planets, and obtain crucial parameters to address the
problems of planet migration and survival at 10 Myr, the time-scale for
planet formation according to meteoritic and preliminary astronomical
evidence.

FGS/1 9089

Parallaxes of Cataclysmic Variables: Understanding Their Peculiar
Secondary Stars. Fine Guidance Sensor #1 was used to measure precise
parallaxes for three additional CVs {WZ Sge, RU Peg, and YZ Cnc}, whose
orbital periods span a much larger range than explored in previous
observations, allowing examination of how the accretion luminosity and
secondary star change with orbital period.

STIS/CCD 9114

SINS: The Supernova Intensive Study– Cycle 10.The Space Telescope
Imaging Spectrograph (CCD) was used to perform closer observations of
supernovae that will create the chemical history of the Universe,
energize the interstellar gas, stiffen the spine of the extragalactic
distance scale and provide the only evidence for an accelerating
universe. A violent encounter is underway between the fast-moving debris
and the stationary inner ring. Monitoring this interaction will help
solve the riddles of stellar evolution posed by the enigmatic three-ring
system of SN 1987A. Our UV observations of Ly- Alpha emission reveal the
present location and velocity of a remarkable reverse shock that
provides a unique laboratory for studying fast shocks and a powerful
tool for dissecting the structure of the vanished star.

STIS/FUV-MAMA 9159

Test of a New Observational Method for Stellar Seismology. Proposal will
measure amplitude versus wavelength for the 20 known ell=1 and 9. known
ell=2 modes in PG1159-035 using the STIS FUV- MAMA.

ACS 9301

Take deep ACS images and grism exposures of fields with very deep
infrared imaging data. The combined optical – infrared data and grisms
will be uniquely suited to study galaxies at high redshift: very high
redshift galaxies from the grism data, and internally red galaxies from
the combined optical – IR imaging. The comparison of the grism redshifts
with groundbased spectroscopy will enable an evaluation of the
effectiveness of the grism for redshift studies. The 3 fields of
interest for this study are: 1} HDF North, 2} HDF South, 3} MS1054-03.

NICMOS 9316

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 images are available.

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.

WF/PC-2 9319

POMS Test Proposal: WFII Backup Parallel Archive Proposal II.The WF/PC-2
was used to execute a POMS test proposal, designed to simulate future
scientific plans.

ACS/WFC 9575

Default {Archival} Pure Parallel Program.The Advanced Camera for Surveys
(WFC) was used to test ACS pure parallels in POMS.

FLIGHT OPERATIONS SUMMARY:

HSTARs:

8645 FOT lost commandability of A string @ 130/22:08:00z

8646 Too Many Job Requests @ 131/11:30:00z

8647 FOT lost commandability of A string @ 133/04:45:00z

Ops Requests Executed:

16763-0 Clear ACS FSW Error Counter @ 130/1711z

Ops Notes executed:

0995-0 Adjust Recharge Ratio Limit for High Sun/Orbit Time (return yellow
limits)

0900-1 COMMAND PROBLEM (2x)

1002-1 Change Limits MAMA2 Threshold Voltage (2x)

0910-2 SI Console response to MCE Resets after FSW 4.8 is activated

0916-0 Tabulation of Slew Attitude Error (Miss-distance) (3x)

Guide Star Acquisitions:

Scheduled Acquisitions: 15

Successful: 15

Scheduled Re-acquisitions: 27

Successful: 27

FHST Updates:

Scheduled: 40

Successful: 40

No losss of locks.

Operations Notes:

1. Loads for SA133M02_F1 approved @ 130/1330z

2. CCS-C to monitor in TEST mode (GUI 3.5.0.0.71, PRD D06100R1) @ 130/1400z

3. CCS-C-CORE-TEST unable to log in after 130/2208z network problem. Log-in
attempt
at 132/0130z reported no ISP connection due to more than 140 clients.
CCS-C-CORE-TEST login problem persists on day 133. Users already logged in show
good data on CCS-C. (Reference HSTAR # 8645 network problems)

4. CCS-A full recycle (to correct no SAC connection & no job status data) @
131/1232z
(Reference HSTAR # 8646).

5. ESB code 103 is “Block load interrupted a block load” due to the command
dropout
on day 132 (TTR # 23045)

6. CCS-A full recycled to correct loss of command @ 133/0444z (Reference
HSTAR # 8647) Switched CMD and
NCC to CCS-B at 133/0445z. Switched CMD and NCC back to CCS-A @ 133/0555z.
Migration of real-time data from CCS-B to CCS-A may be required to cover period
of recycle activity.

SIGNIFICANT FORTHCOMING EVENTS:

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