Status Report

Hubble Space Telescope Daily Report 2669 21 July 2000

By SpaceRef Editor
July 21, 2000
Filed under

HUBBLE SPACE TELESCOPE
 
  DAILY REPORT #2669
 
PERIOD COVERED:  0000Z (UTC) 07/20/00 – 0000Z (UTC) 07/21/00
 
Daily Status Report as of 203/0000Z
 
1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:
 
    1.1 Completed STIS/CCD 8439 (Bias Monitor-Part 2 C8)
 
        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.  The proposal completed with no reported problems.
 
    1.2 Completed Two Sets of WF/PC-2 8826 (Cycle 9 Supplemental Darks pt 1)
 
        The WF/PC-2 was used to perform a T dark calibration program that obtains three dark frames every day in order to provide data for monitoring and characterizing the evolution of hot pixels.  There were no reported anomalies.
 
    1.3 Completed Nine Sets of STIS/CCD 8808 (POMS Test Proposal: STIS Non-Scripted Parallel Proposal Continuation III)
 
        The Space Telescope Imaging Spectrograph (CCD) was used to make non-scripted, parallel observations as part of a POMS test proposal.  The observations completed with no anomalous activity.
 
    1.4 Completed WF/PC-2 8601 (A Snapshot Survey of Probable Nearby Galaxies)
 
        The WF/PC-2 was used to continue the very successful snapshot survey in order to use the high spatial resolution of HST to determine whether selected galaxies are nearby on the basis of resolution into stars, and the magnitudes and colors of the brightest stars.  There were no reported problems.
 
    1.5 Completed Two Sets of STIS/CCD 8437 (Dark Monitor-Part 2 C8)
 
        The Space Telescope Imaging Spectrograph (CCD) was used to monitor the darks.  The proposal completed nominally.
 
    1.6 Completed WF/PC-2 8222 (An Emission Line Survey of the Crab Nebula)
 
        The WF/PC-2 was used to conduct an emission line survey of the Crab Nebula (a.k.a., M-1) in the light of emission from O I, S II, and O III, and in a single continuum band.  In addition to our specific scientific objectives, this survey will provide a data set that is essential to all future studies of the structure, dynamics, and evolution of the Crab.  The observations were executed as scheduled, and no anomalies were reported.
 
    1.7 Completed Four Sets of STIS/MA1/MA2 8859 (MAMA Dispersion Solution Check)
 
        The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to determine wavelength dispersion solutions on a yearly basis as part of a long-term monitoring program.  Deep engineering wavecals for each MAMA grating will be obtained.  The observations completed nominally.
 
    1.8 Completed STIS/CCD 8870 (POMS Test Proposal: STIS Non-Scripted Parallel Proposal Continuation IV)
 
        The Space Telescope Imaging Spectrograph (CCD) was used to make non-scripted, parallel observations as part of a POMS test proposal.  The observations completed with no anomalous activity.
 
    1.9 Completed STIS/CCD/MA1 8316 (The Lyman-Alpha Absorption Cross-Section of Nearby Galaxies)
 
        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to study the Lyman-Alpha absorption cross-section of nearby galaxy Q1831+731.  The high resolution of the spectra will allow us to accurately determine the velocity of the gas, which can be compared to the systemic velocity of the galaxy, and to the velocity field determined from 21 cm H-I emission measurements, when available.  This will enable us to determine if or how the gas is kinematically tied to the galaxy.  A wavelength calibration image was also taken.  The observations were executed as scheduled, and no anomalies were noted.
 
    1.10 Completed WF/PC-2 8805 (POMS Test Proposal: WFII Parallel Archive Proposal Continuation)
 
        The WF/PC-2 was used to perform a generic target version of the WFPC2 Archival Pure Parallel program.  The program will be used to take parallel images of random areas of the sky, following the recommendations of the Parallels Working.  The proposal completed with no reported problems.
 
    1.11 Completed WF/PC-2 8167 (WF/PC-2 Imaging of a Galaxy at z = 5.34 and its Field)
 
        The WF/PC-2 was used to make observations of the galaxy 0140+326RD which is at a distance of Z = 5.34.  This galaxy was the first
spectroscopically confirmed object at Z > 5 and among the few confirmed objects at z > 5 currently.  The observations were completed as planned, and no anomalies were reported.
 
2.0 FLIGHT OPERATIONS SUMMARY:
 
    2.1 Guide Star Acquisitions:
      Scheduled Acquisitions: 7
Successful: 7
 
  Scheduled Re-acquisitions: 8
Successful: 8
 
    2.2 FHST Updates:
Scheduled: 17
Successful: 17
 
    2.3 Operations Notes:
 
        Real-time operations transferred to the Building 23 back-up facility at 202/1453Z, utilizing CCS string "C".  "C" string was re-cycled at 202/1702Z.
 
        Using ROP SR-1A, the SSR EDAC error counter was cleared three times.
 
        Per HSTAR 7739, Battery #2 voltage flagged out-of-limits low (27.636 volts) for one sample at 203/080319Z and at 203/080337Z, and Battery #4 voltage flagged out-of-limits low (27.636 volts) for one sample at 203/080319Z and at 203/080331Z.  The low setting is 27.64 volts.  The flags occurred at the end of orbit night.
 
3.0 SIGNIFICANT FORTHCOMING EVENTS:
 
        Continuation of normal science observations and calibrations.

SpaceRef staff editor.