HUBBLE SPACE TELESCOPE

       DAILY REPORT #2513

PERIOD COVERED:  0000Z (UTC) 12/03/99 - 0000Z (UTC) 12/6/99

Daily Status Report as of 340/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

Since HST remains in Zero Gyro Sun Point (ZGSP), no science observations 
were performed.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:

                                         No activity

    2.2 FHST Updates:

                                         No activity

    2.3 Operations Notes:

        The HST is still in ZGSP.

        Operations Note #661 was used three times over the weekend to 
re-set the time-based re-charge ratio charge/discharge buffers.

        The On-Orbit Test of the PSEA/RMGA/HWSP, which was run on the CCS 
"B" string, was begun at approximately 337/1230Z.  There were 30 iterations 
of the PSEA test mode prior to entry into PSEA control.  PSEA entry 
proceeded nominally.  The HST was commanded to HWSP at 
337/1452Z.  Acquisition of signal was delayed for about five minutes until 
a second set of MA transmitter commands could be issued.  When the 
temperature on RWA #2 exceeded the high limit, the transition back to ZGSP 
began at 337/1715Z.  Since the transition was performed at night, RWA #2 
cooled down and the ZGSP capture was nominal.  The test was successfully 
concluded at 337/1802Z.  Operations returned to the CCS "A string at 337/2240Z.

        The NSSC-1 was recovered and the WF/PC-2 Heat Pipe Heater was 
turned on at 337/1845Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Servicing Mission 3A, currently scheduled for December 11, 1999.

/CAW