Status Report

Hubble Space Telescope Daily Report #2751 11/16/00

By SpaceRef Editor
November 16, 2000
Filed under ,

HUBBLE SPACE TELESCOPE
 
  DAILY REPORT #2751
 
PERIOD COVERED:  0000Z (UTC) 11/15/00 – 0000Z (UTC) 11/16/00
 
Daily Status Report as of 321/0000Z
 
1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:
 
    1.1 Completed STIS/MA1 8721 (An UV Imaging Survey of IR-Bright Star- Forming Galaxies)
 
        The Space Telescope Imaging Spectrograph (MA1) was used to carry out a UV {~1, 600 Angstrom} snapshot imaging survey of all the actively star-forming galaxies detected by ISO at Lambda>170 Mum and closer than cz=9000 km/s.  The sample covers a large region in the parameter’s space of morphology, luminosity, metallicity, and star formation intensity.  There were no reported anomalies.
 
    1.2 Completed Four Sets of 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 Group.  The proposal completed with no reported problems.
 
    1.3 Completed Two Sets of STIS/MA1/MA2 8843 (Cycle 9 MAMA Dark Measurements)
 
        The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to perform the routine monitoring of the MAMA detector dark noise.  The proposal completed nominally.
 
    1.4 Completed Two Sets of WF/PC-2/STIS/CCD 8641 (Testing the Accelerating Universe)
 
        The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) were used to observe Type Ia supernovae which provide evidence for an accelerating universe: an extraordinary result that needs to be rigorously tested.  The observations completed with no reported problems.
 
    1.5 Completed Three Sets of WF/PC-2 8816 (Cycle 9 UV Earthflats)
 
        The WF/PC-2 was used to obtain sequences of earth streak flats to improve the quality of pipeline flat fields for the WFPC2 UV filter set and in order to monitor flat field stability.  There were no reported problems.
 
    1.6 Completed Three Sets of WF/PC-2 8815 (Cycle 9 Earth Flats)
 
        The WF/PC-2 was used to monitor flatfield stability.  This proposal obtains 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 nominally.
 
    1.7 Completed WF/PC-2 8290 (Weather, Moons, and Orbit of the Brown Dwarf Gl 229B)
 
        The WF/PC-2 was used to make observations of the brown dwarf star HD42581 (a.k.a., GI 229B).  Gl 229B is the only unambiguous brown dwarf.  It can be imaged with high astrometric and photometric accuracy only by HST.  The observations were executed as scheduled, and no anomalies were noted.
 
    1.8 Completed Two Sets of STIS/CCD 8562 (Probing the Large Scale Structure: Cosmic Shear Observations)
 
        The Space Telescope Imaging Spectrograph (CCD) was used to probe the distortion of light bundles from distant galaxies, looking at the statistical properties of the intervening inhomogeneous {dark} matter distribution.  The proposal completed nominally.
 
    1.9 Completed WF/PC-2 8701 (Multiplicity among Very-Low Mass Stars and Brown Dwarfs in Alpha Persei and the Pleiades)
 
        The WF/PC-2 was used to observe open clusters which provide excellent hunting grounds for brown dwarf {BD} searches.  The AlphaPer and Pleiades clusters are young, nearby and have low extinction.  They are considered to be the best-suited places to study the Substellar Mass.  A dozen of cool faint AlphaPer and Pleiades members have been confirmed as “bona-fide” BDs with the lithium test.  By comparison with those, about 60 very good cluster BD candidates are currently known.  The Pleiades SMF obtained using the most recent deep large CCD surveys indicates that BDs are quite numerous but do not make a significant contribution to the total cluster mass.  The observations completed with no reported problems.
 
    1.10 Completed STIS/CCD 8837 (CCD Dark Monitor-Part 1)
 
        The Space Telescope Imaging Spectrograph (CCD) was used to monitor the darks.  The proposal completed with no reported problems.
 
    1.11 Completed 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.
 
2.0 FLIGHT OPERATIONS SUMMARY:
 
    2.1 Guide Star Acquisitions:
      Scheduled Acquisitions: 9
                Successful: 9
 
    Scheduled Re-acquisitions: 7
                Successful: 7
 
    2.2 FHST Updates:
                  Scheduled: 16
                Successful: 16
 
    2.3 Operations Notes:
 
        Using ROP SR-1A, the correctable SSR EDAC errors were cleared on three occasions.
 
        The engineering status buffer limits were adjusted twice, per ROP DF-18A.
 
        In support of today’s flight software (FSW) 1.4A installation, a RAM memory base line dump was performed at 320/1700Z.  An EEPROM memory baseline dump occurred at 320/2020Z.
 
3.0 SIGNIFICANT FORTHCOMING EVENTS:
 
        The FSW 1.4A RAM and EEPROM installation is scheduled today.
 
        Continuation of normal science observations and calibrations.

SpaceRef staff editor.