HUBBLE SPACE TELESCOPE

       DAILY REPORT #2528

PERIOD COVERED:  0000Z (UTC) 12/28/99 - 0000Z (UTC) 12/29/99

Daily Status Report as of 363/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed STIS/CCD 8502 (CCD Functional for SMOV3a)

        The Space Telescope Imaging Spectrograph (CCD) was used to measure 
the baseline
performance and commandability of the CCD subsystem.    The proposal 
completed normally

    1.2 Completed Two Sets of FGS 8532 (White Dwarf and M-Stars in the 
Solar Neighborhood;
Revealing Binarity)

        FGS-1 was used to conduct a high angular resolution survey with 
FGS1r to detect binarity
among nearby M dwarfs and white dwarfs.   The observations completed with 
no reported
problems.

    1.3 Completed S/C 8519 (Exercising the HST 486 Flight Software)

        The objective of this test is to exercise and verify the new 486 
computer and pointing control
system flight software with activities not utilized in other SMOV3A 
proposals.  This includes moving
target tracking while under FGS control, the gen-slew capability, guide 
star handoffs, handoffs
from FGS control to gyro control while tracking, onboard parallax 
correction and verification that
the 2047s tracking limit no longer applies.  No problems were encountered.

    1.4 Completed Two Sets of WF/PC-2 8491 (Transition to hold, Decon and 
Cool Down
Procedure)

        This program covers the transition from Protect Safe Mode to Hold 
Mode, then performs a
Protect Decontamination. This is followed by a series of UV monitors and 
focus checks at -43C,
then a special decon to take the instrument to -88C.

Proposal 8491/SU E5 may have potential impacts due to extended 
re-acquisition attempts.
Proposal 8491/25 may have potential impacts due to loss of lock.  These 
proposal impacts are
under investigation

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:

       Scheduled Acquisitions: 08
Successful: 07

  Scheduled Re-acquisitions: 06
Successful: 05

    2.2 FHST Updates:

Scheduled: 20
Successful: 20

    2.3 Operations Notes:
Loss of lock see HSTAR 7446 (326/23:13)


3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of SMOV and normal science observations and calibrations.

/CAW