Hubble Space Telescope Daily Report #3026

HUBBLE SPACE TELESCOPE

DAILY REPORT #3026

PERIOD COVERED: 0000Z (UTC) 01/02/02 – 0000Z (UTC) 01/03/02

Daily Status Report as of 003/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 Completed Four Sets of STIS/CCD/MA1/MA2 8914 (Sensitivity Monitor C10)

The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was
used to monitor the sensitivity of each CCD grating mode to detect any
change due to contamination or other causes. The STIS focus is also
monitored in an imaging mode. There was no anomalous activity.

1.2 Completed Three Sets of 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. The proposal
completed without incident.

1.3 Completed STIS/CCD 9280 (X-Ray Imaging of GPS and CSS Quasars)

The Space Telescope Imaging Spectrograph (CCD) was used to conduct
a survey of GPS and CSS radio-loud quasars, by studying their arcsecond
structure in the X-rays, by searching for X-ray jets, and by searching for
signatures of intermittent AGN activity. The proposal completed nominally.

1.4 Completed Four Sets of STIS/CCD 9285 (POMS Test Proposal: STIS
Non-scripted Parallel Proposal Continuation III)

The Space Telescope Imaging Spectrograph (CCD) was used to make low
galactic latitude, non-scripted parallel observations as part of a POMS
test proposal. The observations were completed as planned, and no
anomalies were reported.

1.5 Completed Three Sets of STIS/CCD 8901 (Dark Monitor-Part 1)

The Space Telescope Imaging Spectrograph (CCD) was used to monitor
the darks. There was no anomalous activity.

1.6 Completed Two Sets of STIS/CCD 9088 (Next Generation Spectral
Library of Stars)

The Space Telescope Imaging Spectrograph (CCD) was used to produce
a “Next Generation” Spectral Library of 600 stars for use in modeling the
integrated light of galaxies and clusters by using the low dispersion UV
and optical gratings of STIS. The library will be roughly equally divided
among four metallicities, very low {Fe/H < -1.5}, low {-1.5 < Fe/H < -0.5}, near-solar {-0.5 < Fe/H < 0.1}, and super-solar {Fe/H > 0.1}, well-sampling
the entire HR-diagram in each bin. Such a library will surpass all extant
compilations and have lasting archival value, well into the Next Generation
Space Telescope era. No problems occurred.

1.7 Completed Seven Sets of 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. There were no reported problems.

1.8 Completed STIS/CCD 8903 (Bias Monitor – Part 1)

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 to build up high-S/N superbiases and track the evolution of hot
columns. There were no problems.

1.9 Completed FGS/1 9034 (The Masses and Luminosities of Population II
Stars)

Fine Guidance Sensor #1 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. The observations completed
nominally.

1.10 Completed Two Sets of WF/PC-2 8942 (Cycle 10 Intflat Sweeps and
Linearity Test)
!!!!!!70! The WF/PC-2 was used to monitor the pixel-to-pixel flatfield
response and provide a linearity check. These intflat sequences are done
once during the year and the images will provide a backup database in the
event of complete failure of the visflat lamp as well as allow monitoring
of the gain ratios. There were no reported problems.

1.11 Completed WF/PC-2 9124 (Mid-UV SNAPSHOT Survey of Nearby
Irregulars: Galaxy Structure and Evolution Benchmark)

The WF/PC-2 was used to investigate the relation between star
formation and the global physical characteristics of galaxies to interpret
the morphologies of distant galaxies in terms of their evolutionary
status. Distant galaxies are primarily observed in their rest frame
mid-ultraviolet. They resemble nearby late-type galaxies, but are they
really physically similar classes of objects? It is proposed to address
this question through a SNAPSHOT survey in the 2 mid-UV filter F300W of 98
nearby late-type, irregular and peculiar galaxies. No problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions: 5

Successful: 5

Scheduled Re-acquisitions: 9

Successful: 9

2.2 FHST Updates:

Scheduled: 12

Successful: 12

2.3 Operations Notes:

Real-time operations transferred to the ‘B” string during the day.

Per HSTAR 8452, at 002/174532Z, the OB Bulkhead 7 Temperature
(OOBBH7T) began flagging out-of-limits with a value of 30.7 degC. An
ongoing STIS thermal Anomaly Review Board is investigating this
problem. Per an operations note, the ground system limit was adjusted at
002/2122Z.

At 002/181524, telemetry parameter TB6AESB (the Bay 6 Aft ES
Bulkhead Temperature) flagged our-of-limits high with a value of 20.435
degC (the limit is 20.0 degC). HSTAR 8451 was written. Per an operations
note, the ground system limit was changed at 002/2123Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.