Status Report

Hubble Space Telescope Daily Report #2723 10/06/00

By SpaceRef Editor
October 6, 2000
Filed under

PERIOD COVERED:  0000Z (UTC) 10/05/00 – 0000Z (UTC) 10/06/00
Daily Status Report as of 280/0000Z
    1.1 Completed STIS/CCD/MA1 8302 (Lyman-alpha emission in Starburst Galaxies)
        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to perform a deep study of Ly-alpha emission and destruction in 3 star-forming galaxies.  These objects have been already observed with the GHRS and exhibit a variety of situations, with Ly-alpha showing P Cyg profiles, secondary emissions or even a deep damped absorption line with no emission.  They also span a range of intrinsic properties: IZW18 (which is being examined in this iteration) is a gas-rich, metal deficient dust free dwarf galaxy, Haro 2 has a simple morphology while IRAS 08339+6517 is a luminous IRAS starburst galaxy with more dust and complex Ly- alpha profile.  The proposal completed with no reported problems.
    1.2 Completed Three 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.
    1.3 Completed Two Sets of STIS/MA1 8843 (Cycle 9 MAMA Dark Measurements)
        The Space Telescope Imaging Spectrograph (MA1) was used to perform the routine monitoring of the MAMA detector dark noise.  The proposal completed nominally.
    1.4 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.
    1.5 Completed Two Sets of 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.
    1.6 Completed Three Sets of STIS/CCD 8631 (Bright Quasar Close Lensing Search II)
        The Space Telescope Imaging Spectrograph (CCD) was used to expand the Cycle 8 second generation HST snapshot survey of bright quasars, optimized to find lenses with component image separations < 1".  The observations completed nominally.
    1.7 Completed STIS/CCD/MA2 8569 (A New Survey for Low-Redshift Damped Lyman-Alpha Lines in QSO MgII Systems)
        The Space Telescope Imaging Spectrograph (CCD and MA2) was used to support studies which have shown that most of the observable neutral gas mass in the Universe resides in QSO damped LyAlpha {DLA} systems.  However, at low redshift , DLA can only be found by searching in the UV with HST.  By boot-strapping from the MgII statistics, we will be able to further improve the determination of the low- redshift statistical properties of DLA {their incidence and cosmological mass density} and open up new opportunities for studies at low redshift.  The observations completed nominally.
    1.8 Completed USAFE01 (The Recovery of WF/PC-2)
    1.9 Completed STIS/CCD 8838 (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.  The proposal completed nominally.
    1.10 Completed STIS/CCD/MA1/MA2 8781 (NGC 2363 V1: A Rare Case Of Major LBV Eruption)
        The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was used to observe NGC 2363 which in January 1966, revealed the presence of a new bright, blue star.  It has been shown that this star is a Luminous Blue variable {LBV} undergoing a major outburst.  The observation completed nominally, with no reported problems.
The following scheduled WF/PC-2 proposals were not executed since the instrument was placed in safe at approximately 276/114752Z:
Two Sets of WF/PC-2 8826 (Cycle 9 Supplemental Darks pt 1)
WF/PC-2 8805 (POMS Test Proposal: WFII Parallel Archive Proposal Continuation) WF/PC-2 8544 (POMS Test Proposal: WFII Backup Parallel Archive Proposal II) WF/PC-2 8822 (Decontaminations and Associated Observations Pt. 1/4) WF/PC-2 8814 (Cycle 9 Redleak Check)
WF/PC-2 8598 (Snapshot Survey of Extended OIIl Lambda 5007Angstrom Emission in Seyfert Galaxies)
The following scheduled joint WF/PC-2 and STIS proposal was not executed since the WF/PC-2 instrument was placed in safe at approximately 276/114752Z.
WF/PC-2/STIS/CCD 8573 (Newborn Planets and Brown Dwarf Companions in IC 348)
    2.1 Guide Star Acquisitions:
      Scheduled Acquisitions: 7
Successful: 7
  Scheduled Re-acquisitions: 7
Successful: 7
    2.2 FHST Updates:
Scheduled: 17
Successful: 17
    2.3 Operations Notes:
        The operations team is utilizing the Science Institute Mission Operations Room.
        Using ROP SR-1A, the SSR EDAC error counter was cleared three times.
        Per ROP NS-3, the NSSC-1 status buffer was dumped three times.
        SI C&DH errors were reset four times per ROP NS-5.
        The WF/PC-2 was recovered at 279/2116Z via real-time commanding contained in an operations request.  The AFM was successfully turned on at 280/001756Z.  The RAM dump, downlinked previously, was verified.  The first mechanism move at 280/054328Z was successful.  Decontamination proposals are currently in progress.  The first WF/PC-2 shutter usage is scheduled for approximately 280/2341Z.
        Using ROP IC-2, SSA transmitter #1 was turned on at 280/0352Z and turned off at 280/0359Z.
        A target of opportunity proposal, utilizing both WF/PC-2 and STIS, will be executed during three visits this weekend.  The proposal is # 8867 (Gamma-Ray Bursts: Discovering The Progenitors And Understanding The Explosion – Visits A0-R0)
        Continuation of normal science observations and calibrations.

SpaceRef staff editor.