HUBBLE SPACE TELESCOPE

       DAILY REPORT #2520

PERIOD COVERED:  0000Z (UTC) 12/14/99 - 0000Z (UTC) 12/15/99

Daily Status Report as of 349/0000Z

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 in ZGSP.

        Using Operations Note #661, the time-based recharge ratio 
charge/discharge buffers were reset at 348/1436Z.

        The GCMR/ODM capability was transferred to CCS "G" string at 
348/2135Z in preparation for SM3A.

        As described in HSTAR 7404, the primary mirror figure control 
actuator position 20 (EACP20PM) flagged out-of-limits low at a value of 
-10/08 pounds for one seven-and-one-half second telemetry sample.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Servicing Mission 3A, currently scheduled for December 16, 
1999.  The launch window opens at 351/0218Z.

/CAW