Status Report

Hubble Space Telescope Daily Report #3045 – 30 Jan 2002

By SpaceRef Editor
January 30, 2002
Filed under , ,



PERIOD COVERED: 0000Z (UTC) 01/29/02 – 0000Z (UTC) 01/30/02

Daily Status Report as of 030/0000Z


1.1 Completed STIS/CCD/MA2 9161 (The Ultraviolet Properties of Obscured

The Space Telescope Imaging Spectrograph (CCD and MA2) was used to
observe a subset of The Two Micron All-Sky Survey {2MASS} -discovered QSOs
to: 1} determine if UV absorption- line features are present as seen in
several other highly polarized AGN populations; 2} test relationships
between X-ray and UV/optical attenuation, AGN spectral type, optical
polarization, and detected UV absorption-line features; and 3} characterize
the spectral energy distributions and UV properties of obscured
QSOs. There were no problems.

1.2 Completed Three 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.

1.3 Completed Four 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 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.

1.5 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.

1.6 Completed WF/PC-2 9118 (Tracing the Cosmic Expansion to z>1 with
Type Ia Supernovae)

The WF/PC-2 was used to observe type Ia supernovae in order to
provide evidence for an accelerating universe. The case for cosmic
acceleration rests almost entirely on the observation that the observed SN
Ia at z~0.5 are 0.25 magnitudes fainter than expected for a
non-accelerating Universe. It is proposed to follow five SN Ia in the
range 0.95 0 cosmology, this experiment is a powerful and
straightforward way to assess the reliability of the SN Ia
measurements. In addition, if SN Ia are reliable standard candles, the
proposed observations will significantly increase the precision with which
Omega_Lambda and Omega_M are measured. There was no reported anomalous

1.7 Completed 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. There
were no reported problems.

1.8 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.

1.9 Completed STIS/CCD 9239 (Absolute Proper Motions of Nearby Dwarf
Spheroidal Galaxies-Cycle 10)

The Space Telescope Imaging Spectrograph (CCD) was used to measure
precise absolute proper motions for four dwarf spheroidal satellites of the
Milky Way using spectroscopically-confirmed background QSOs to define a
zero- velocity reference frame. The proposal completed with no reported

1.10 Completed Two Sets of STIS/CCD 9077 (Survey of the LMC Planetary

The Space Telescope Imaging Spectrograph (CCD) was used to perform
a snapshot survey of all known LMC planetary nebulae {PNe} in order to
study the co-evolution of the nebulae and their central stars, and to probe
the chemical enrichment history of the LMC. There were no reported problems.

1.11 Completed WF/PC-2 8059 (POMS Test Proposal: Targeted Parallel
Archive Proposal)

The WF/PC-2 was used to observe the parallel opportunities
available in the neighborhood of bright galaxies are treated in a slightly
different way from the normal pure parallels. Local Group galaxies offer
the opportunity for a closer look at young stellar
populations. Narrow-band images in F656N can be used both to identify
young stars via their emission lines, and to map the gas distribution in
star-forming regions. The observations completed nominally.

1.12 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.

1.13 Completed STIS/CCD 9187 (A Lyman Limit Snapshot Survey: The Search
for Candidate D/H Absorbers)

The Space Telescope Imaging Spectrograph (CCD) was used to measure
D/H in gas clouds seen against background QSOs. This provides a unique and
fundamental cosmological probe of the baryonic density parameter. To date,
most of the QSO absorption line D/H constraints have been derived at high
redshift. In this proposal the proposers investigate a lower redshift
range, because there are two potentially crucial advantages to be gained by
carrying out D/H measurements at intermediate redshift. First, the
background of HI forest lines is lower and contamination of the DI feature
is significantly reduced. Second, a far larger sample of very bright QSOs
exists. There were no reported problems.

1.14 Completed STIS/CCD/MA1 9137 (Quasar Absorbers and Large Scale

The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
perform spectroscopy of 15 bright quasars in a 22 square degree region that
has well-sampled galaxy redshifts. No problems were encountered.

1.15 Completed 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.


2.1 Guide Star Acquisitions:

Scheduled Acquisitions: 7

Successful: 7

Scheduled Re-acquisitions: 9

Successful: 9

2.2 FHST Updates:

Scheduled: 13

Successful: 13

2.3 Operations Notes:

The SSR-1 EDAC error counter was cleared twice per ROP SR-1A.

Using ROP NS-3, the NSSC-1 status buffer was dumped at 029/2000Z.

A TTR was generated when there was a required re-transmit at
030/0746Z during a 486 uplink. The engineering status buffer limit was
updated (SESBSLD=1) at 030/0752Z in accordance with ROP DF-18A.


Continuation of normal science observations and calibrations.

SpaceRef staff editor.