Status Report

Hubble Space Telescope Daily Report #2666 07/18/00

By SpaceRef Editor
July 18, 2000
Filed under

HUBBLE SPACE TELESCOPE
 
  DAILY REPORT #2666
 
PERIOD COVERED:  0000Z (UTC) 07/17/00 – 0000Z (UTC) 07/18/00
 
Daily Status Report as of 200/0000Z
 
1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:
 
    1.1 Completed WF/PC-2 8683 (Imaging Of Brightest Cluster Galaxies: The High End Of The Black Hole Mass Distribution)
 
        The WF/PC-2 was used to make kinematic black hole detections in galaxies to decide whether they indicate that the mass correlates with both optical luminosity and radio power.  The observation completed with no reported problems.
 
    1.2 Completed 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.
 
    1.3 Completed Four 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.
 
    1.4 Completed Two Sets of 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.
 
    1.5 Completed Three Sets of WF/PC-2 8800 (Moving Observations of a Fixed Star Cluster)
 
        The WF/PC-2 was used for a proposal that will slew HST across a star cluster while making exposures.  The resulting trailed images will then be studied.  The proposal completed with no reported problems.
 
    1.6 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.
 
    1.7 Completed Three Sets of WF/PC-2 8811 (Cycle 9 Standard Darks)
 
        The WF/PC-2 was used to obtain dark frames every week in order to provide data for the ongoing calibration of the CCD dark current rate, and to monitor and characterize the evolution of hot pixels.  Over an extended period these data will also provide a monitor of radiation damage to the CCDs.  The proposal completed with no reported problems.
 
    1.8 Completed STIS/MA1/MA2 8426 (Cycle 8 MAMA Dark Measurements)
 
        The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to make a routine Cycle-8 MAMA dark noise calibration measurement.  This proposal will provide the primary means of checking on the health of the MAMA detectors.  This is done through frequent monitoring of the background count rate.  The observations were completed as planned, and no problems were reported.
 
    1.9 Completed WF/PC-2 8812 (Cycle 9 Internal Monitor)
 
        The WF/PC-2 was used to obtain routine internal monitors for WFPC2 in order to monitor the health of the cameras.  A variety of internal exposures are obtained in order to provide a monitor of the integrity of the CCD camera electronics in both bays {gain 7 and gain 15}, a test for quantum efficiency in the CCDs, and a monitor for possible buildup of contaminants on the CCD windows.  There were no reported problems.
 
    1.10 Completed STIS/CCD/MA2 8434 (Slitless Spectroscopy/MAMA)
 
        The Space Telescope Imaging Spectrograph (CCD and MA2) was used to calibrate the dispersion solution and the sensitivity as a function of the target-position in the MAMA first order and prism slitless
spectroscopy.  The observations completed with no reported problems.
 
    1.11 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.
 
    1.12 Completed WF/PC-2 8676 (Halo Microlens Source Systems and their Backgrounds and Reddening)
 
        The WF/PC-2 was used to investigate the existence of dark objects in the Galactic halo suggested by the MACHO project while is about to release 5.7 years of LMC data revealing ~ 20 candidate microlensing events.  The observer proposes to obtain medium-deep broadband images of eight of the new candidate source stars.  The observations completed with no reported anomalies.
 
    1.13 Completed STIS/CCD 7912 (STIS Parallel Archive Proposal – Nearby Galaxies – Imaging and Spectroscopy)
 
        The Space Telescope Imaging Spectrograph (CCD) was used to make parallel observations of nearby galaxies.  This survey will be useful to study the star formation histories, chemical evolution, and distances to these galaxies.  These data will be placed immediately into the Hubble Data Archive.  The observations were completed as scheduled, and no problems were reported.
 
2.0 FLIGHT OPERATIONS SUMMARY:
 
    2.1 Guide Star Acquisitions:
      Scheduled Acquisitions: 8
Successful: 8
 
  Scheduled Re-acquisitions: 7
Successful: 7
 
    2.2 FHST Updates:
Scheduled: 33
Successful: 33
 
    2.3 Operations Notes:
 
        The SSR error counter was cleared three times per ROP SR-1A.
 
        Using ROP DF-18A, the engineering status buffer was dumped at 199/1240Z.
 
        Real-time operations transferred to CCS string "C" at 199/1350Z in preparation for the CCS 3.2.0.7 patch which was made on string "B".  The patch was successfully tested.
 
        A TTR was written when there was an unsuccessful attempt to send a GCMR for Mode 2 at 199/1941Z.  The POCC had not been notified of a DIS ADPE failover, and the GCMR had not been processed.  As a result, there was a two-minute period of unrecoverable 32k engineering data.
 
        As documented in HSTAR 7730, the SSR was commanded for a science playback at 200/054748Z.  During the playback, the EDAC count flagged high with a value of 60.  Twelve seconds later the count increased to 101.  The HST was in an SAA interval at the time.  Per ROP SR-1A the Systems engineer was notified, the error counter was cleared, and the "problem" blocks were re-transmitted at 200/0729Z.  The same errors occurred again.  The TRI module was then reconfigured per ROP SR-1A.
 
3.0 SIGNIFICANT FORTHCOMING EVENTS:
 
        Continuation of normal science observations and calibrations.

SpaceRef staff editor.