HUBBLE SPACE TELESCOPE

   DAILY REPORT #2505

PERIOD COVERED:  0000Z (UTC) 11/19/99 - 0000Z (UTC) 11/22/99

Daily Status Report as of 326/0000Z

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 remains in Zero Gyro Sun Point (ZGSP).

        Using ROP SR-1, the SSR EDAC error counter was cleared once.

        HST operations continued scheduling and utilizing the Deep Space 
Network sites, Canberra and Mila, for dumping 4k SSR engineering data to 
the ground.  Per HSTAR 7367, the dump at 323/130414Z resulted in thirteen 
EDACs in the block range 22300-24100, an area where errors are not normally 
experience.  This TSAR also described two previous occurrences of anomalous 
EDAC activity.

        Several HSTARs were written over the weekend for various limit 
violations.  7365 describes various parameters breaking the upper limits on 
day 323 due to the fact that the aperture door is closed.  7366 details OTA 
limit violations on day 323.  7369 is for safing temperature SMAELEXT being 
out-of-limit high on day 324.  Finally, 7372 was for a WF/PC-2 flagging 
out-of-limits low on day 326.

        An operations request was executed at 323/1838Z to safe SSAT for SM3A.

        At 323/2017Z, recording was stopped on SA1 and begun on SA2, per an 
operations request.

        The DF-224 time based recharge ratio was reset at 324/1405Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Servicing Mission 3A, currently scheduled for December 6, 1999.

/CAW