Status Report

Hubble Space Telescope Daily Report #3050 – 6 Feb 2002

By SpaceRef Editor
February 6, 2002
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PERIOD COVERED: 0000Z (UTC) 02/05/02 – 0000Z (UTC) 02/06/02

Daily Status Report as of 037/0000Z


1.1 Completed Six Sets of WF/PC-2 8937 (Cycle 9 Supplemental Darks pt2/3)

The WF/PC-2 was used obtain three dark frames every day to provide
data for monitoring and characterizing the evolution of hot pixels. No
problems were encountered.

1.2 Completed WF/PC-2 8941 (Cycle 10 UV Earthflats)

The WF/PC-2 was used to monitor flat field stability by obtaining
sequences of earth streak flats to improve the quality of pipeline flat
fields for the WFPC2 UV filter set. The proposal had no problems.

1.3 Completed Ten 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.

1.4 Completed Two 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.

1.5 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.

1.6 Completed STIS/CCD-2 8669 (Merger-Driven Evolution Of Galactic
Nuclei: Observations Of The Toomre Sequence)

The Space Telescope Imaging Spectrograph (CCD) was used to observe
galaxy mergers that are believed responsible for triggering starburst and
AGN activity in galaxies, and even perhaps transforming spiral galaxies
into ellipticals. The proposal completed nominally.

1.7 Completed Nine 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.

1.8 Completed Two Sets of 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. The proposal completed without incident.

1.7 Completed 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.

1.8 Completed STIS/CCD/MA1 8571 (Metallicity and D/H Abundance in Low-Z
LyAlpha Absorbers towards PG 1211+143)

The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
continue previous observations along the sightline toward PG 1211+143 that
reveal numerous LyAlpha absorption lines including two very strong LyAlpha
absorbers {cz = 15, 300 and 19, 550 km s^- 1} with associated Si III
absorption. These are the first definite detections of metals in a low-z
LyAlpha forest cloud. Simple photoionization models suggest metallicities
in the range 1–10 sim10^17 cm^-2 in each system. The proposers should be
able to detect deuterium LyAlpha at 10–20 mAngstrom equivalent width,
thereby testing models of D/H astration as a function of IGM metallicity,
an issue of cosmological significance. There were no problems.

1.9 Completed STIS/MA2 9573 (NUV-MAMA Daily Dark Monitor)

The Space Telescope Imaging Spectrograph (MA2) was used to perform
daily monitoring of the NUV MAMA detector dark noise in order to monitor
the effects of thermal changes on the NUV dark rate. No problems occurred.

1.10 Completed STIS/MA1 8572 (Identifying Normal Galaxies at 1.3 < z < 2.5)

The Space Telescope Imaging Spectrograph (MA1) was used to perform
studies of faint, distant galaxies. It is now possible to observe hundreds
of galaxies out to z=1 and in the range 3 < z < 4.5, yet the redshift range 1 < z <3 remains largely unexplored. No problems were noted.

1.12 Completed Two Sets of STIS/MA1 8920 (Cycle 10 MAMA Dark Measurements)

The Space Telescope Imaging Spectrograph (MA1) 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. The proposal completed with no
reported anomalous activity.


2.1 Guide Star Acquisitions:

Scheduled Acquisitions: 8

Successful: 8

Scheduled Re-acquisitions: 9

Successful: 9

2.2 FHST Updates:

Scheduled: 15

Successful: 15

2.3 Operations Notes:

Using ROP SR-1A, the SSR-1 EDAC error counter was cleared twice.


Continuation of normal science observations and calibrations.

SpaceRef staff editor.