HUBBLE SPACE TELESCOPE

   DAILY REPORT #2582

PERIOD COVERED:  0000Z (UTC) 03/16/00 - 0000Z (UTC) 03/17/00

Daily Status Report as of 077/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed STIS/CCD/MA2 8197 (Detection of ^11B/^10B: Part II)

        The Space Telescope Imaging Spectrograph (CCD and MA2) was used to 
make spectrographic observations of star HD160617 to measure the boron 
isotope ratio (i.e., 11B/10B).  A wavelength calibration image was also 
taken.  The observations were completed as planned, and no anomalies were 
reported.

    1.2 Completed Six Sets of WF/PC-2 8436 (POMS Test Proposal: WFII Backup 
Parallel Archive Proposal II)

        The WF/PC-2 was used to make archive observations parallel to the 
prime science observations as part of a POMS test proposal.  This is a POMS 
test proposal designed to simulate scientific plans.  The observations were 
completed as planned, and no anomalies were reported.

    1.3 Completed Two Sets of WF/PC-2 8460 (Cycle 8 Supplemental Darks pt2/3)

        The WF/PC-2 was used to obtain three dark frames every day to 
provide data for monitoring and characterizing the evolution of hot 
pixels.  The observations completed with no reported problems.

    1.4  Completed WF/PC-2 8444 (WF/PC-2 CYCLE-8 Internal Monitor)

        The WF/PC-2 was used to make a bias, and an internal flat, 
observation as part of a Cycle-8 monitoring program 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.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.5 Completed STIS/MA1/MA2 8144 (UV Spectroscopic Snapshots of FUSE AGN 
Targets)

        The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was 
used to make far ultraviolet spectrographic snapshot observations of the 
FUSE AGN target 3C273.  This object is currently scheduled to be observed 
by the Far Ultraviolet Spectroscopic Explorer {FUSE}.  The observations 
were executed as scheduled, and no anomalies were noted.

    1.6 Completed STIS/CCD 8439 (Bias Monitor-Part 2 C8)

        The Space Telescope Imaging Spectrograph (CCD) was used to monitor 
the bias in the 1x1, 1x2, 2x1, and 2x2 bin settings at gain=1, and 1x1 at 
gain = 4, to build up high-S/N superbiases and track the evolution of hot 
columns.  The proposal completed with no reported problems.

    1.7 Completed WF/PC-2 8322 (The Distance to NGC 2841: Improving the TF 
Calibration and Definitively Testing MOND)

        The WF/PC-2 was used to measure a distance to the spiral galaxy NGC 
2841 using Cepheid variables.  NGC 2841 provides a unique opportunity to 
simultaneously probe three separate phenomenon in extragalactic astronomy: 
1} It will provide the highest rotational velocity data point for the 
Cepheid based calibration of the I-band Tully-Fisher relation and thus will 
firmly determine if this relation experiences curvature or remains linear 
all the way out to high rotational velocities. 2} It has hosted two SN Ia 
events; both of which have good photometry {1957A and 1972R}- this 
significantly adds to the number of calibrators for the SN Ia distance 
scale; 3} If its distance can be shown to be significantly less than 19.5 
MPC, then MOND can be definitively ruled out because NGC 2841 will require 
a value of a_o substantially in excess of the empirically determined 
"universal" value.   The observations completed nominally.

    1.8 Completed STIS/CCD 8437 (Dark Monitor-Part 2 C8)

        The Space Telescope Imaging Spectrograph (CCD) was used to monitor 
the darks.  The proposal completed nominally.

    1.9 Completed Three Sets of STIS/CCD 8796 (POMS Test Proposal: STIS 
Non-Scripted Parallel Proposal Continuation IV)

        The Space Telescope Imaging Spectrograph (CCD) was used in the 
parallel mode to make some low galactic latitude archive observations.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.10 Completed STIS/CCD 8187 (STIS Imaging of the Deep NICMOS Parallel 
Fields: Building on the NICMOS Legacy)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of field #1120 which was previously observed using deep images 
from the NICMOS camera.  The STIS images will yield visual morphologies to 
magnitudes of 24.5 and quantitative measures of image structure to 26.5 or 
fainter in two orbits.  The observations were completed as planned, and no 
problems were reported.

    1.11 Completed WF/PC-2 8454 (Linear Ramp Filters Calibraton)

        The WF/PC-2 was used to calibrate the Linear Ramp Filters.  The 
proposal completed with no reported anomalies.

    1.12 Completed STIS/CCD 8549 (POMS Test Proposal: Non-Scripted Parallel 
Proposal Continuation I)

        The Space Telescope Imaging Spectrograph (CCD) was used to make low 
galactic latitude, non-scripted parallel observations as part of a POMS 
test proposal.  The observations were completed as planned, and no 
anomalies were reported.

    1.13 Completed STIS/CCD/MA1 8421 (Spectroscopic Sensitivity for (MAMA 
and) CCD)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
perform basic sensitivity measurement for some supported (MAMA and) CCD 
spectroscopic modes.  Sensitivity measurements are done for a few primary 
tilts of the gratings.  The proposal completed nominally, with no reported 
problems.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions: 6
Successful: 6

  Scheduled Re-acquisitions: 9
Successful: 9

    2.2 FHST Updates:
Scheduled: 16
Successful: 16

    2.3 Operations Notes:

        Using ROP- SR1A, the SSR EDAC error counter was cleared once.

        An SI C&DH error was reset at 076/1138Z per ROP NS-5.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW