Hubble Space Telecope Daily Report #3046 – 31 Jan 2002

HUBBLE SPACE TELESCOPE

DAILY REPORT #3046

PERIOD COVERED: 0000Z (UTC) 01/30/02 – 0000Z (UTC) 01/31/02

Daily Status Report as of 031/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 Completed Two Sets of STIS/CCD/MA1 9137 (Quasar Absorbers and Large
Scale Structure)

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.

1.2 Completed Four 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 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. The re-acquisition failure mentioned in
2.1 and HSTAR 8487 occurred for the fifth iteration of this proposal and
affected two observations when the take data flag remained
down. Otherwise, there were no further reported problems.

1.4 Completed 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 Two Sets of STIS/CCD 9164 (Helical Flows and Rotation in
Protostellar Jets)

The Space Telescope Imaging Spectrograph (CCD) was used to study
the velocity structure of protostellar jets transverse to the jet flow
axis. HST resolution would allow the search for rotation, e.g. a helical
flow pattern, around the axis of an optical jet. Such a detection would
provide strong evidence that jets act as outflowing channels for angular
momentum, thus allowing infalling material to fully accrete onto the
protostar. There were no problems.

1.6 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.

1.7 Completed Two Sets of 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.

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

The Space Telescope Imaging Spectrograph (CCD) was to be 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. The re-acquisition failure mentioned in 2.1 and HSTAR 8487
occurred for this proposal and affected the observation when the take data
flag remained down.

1.9 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.

1.10 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.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions: 4

Successful: 4

Scheduled Re-acquisitions: 11

Successful: 10

Per HSTAR 8485, a re-acquisition at 030/123153Z succeeded on the
second attempt following a scan step limit being exceeded on FGS-2 in the
first attempt. No observations were affected.

HSTAR 8486 was written when another re-acquisition at 030/172417Z
succeeded on the second attempt following a scan step limit being exceeded
on FGS-2 in the first attempt. Again, no observations were affected.

HSTAR 8487 describes an re-acquisition failure at 030/203701Z due
to the scan step limit being exceeded on FGS-2. The following acquisition
was successful. Proposals described in 1.3 and 1.8 were affected.

2.2 FHST Updates:

Scheduled: 10

Successful: 10

2.3 Operations Notes:

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

A TTR was written when a TDRS-W software update problem at
030/1759Z caused events and data to be lost. Accordingly, at 030/1734Z and
at 030/2000Z, the engineering recorder was commanded in order to recover
information. This exercise utilized ROP SR-8A.

Another TTR was generated when there was a required re-transmit at
031/0829Z during a 486 load. The engineering status buffer limit for
SESBSLD was updated at 031/0829Z as directed by ROP DF-18A.

A target-of-opportunity is being inserted into the current
SMS. The observations are scheduled to begin tomorrow morning. Processing
of a new SMS is now underway.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Continuation of normal science observations and calibrations.