HUBBLE SPACE TELESCOPE

       DAILY REPORT #2527

PERIOD COVERED:  0000Z (UTC) 12/27/99 - 0000Z (UTC) 12/28/99

Daily Status Report as of 362/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed S/C 8521 (Guide Star Acquisition Verification for FGS1 
and FGS3)

        After the release of HST from the shuttle bay it is necessary to 
verify that the guide star
acquisitions can be performed successfully. Two pairs of guide stars will 
be acquired in FGS1 and
FGS3 and held in fine lock for 5 minutes.  The proposal completed nominally.

    1.2 Completed the Safemode Recovery of the FOC.

    1.3 Completed Two Sets of Safemode Recovery of STIS.

    1.4 Completed the Recovery of COSTAR to Hold Mode.

    1.5 Completed the Safemode Recovery of NICMOS.

    1.6 Four 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.   One astrometry observation at 
361/17:32 was lost due
to search radius limit exceeded, due to problem with proposal.

    1.7 Completed 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.  The program completed 
nominally.

    1.8 Completed Five Sets of 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.

    1.9 Completed FOC/96 7923 (FOC F/96 Turn-on)

        The Faint Object Camera (f/96) was used to take an internal flat 
and a dark to ensure that the 30-day
limit for the FOC is not exceeded.  The observations were executed as 
scheduled, and no anomalies were
noted.

    1.10 Completed S/C 5582 (FOC/48 Monthly Activation (Camera Section 
Only): Cycle 4)

         This proposal was executed as scheduled, and no anomalies were noted.

    1.11 Completed Two Sets of 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.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:

       Scheduled Acquisitions: 16
Successful: 16

  Scheduled Re-acquisitions: 00
Successful: 00

    2.2 FHST Updates:

Scheduled: 41
Successful: 40

    2.3 Operations Notes:



3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of SMOV and normal science observations and calibrations.

/CAW