Earlier reports Convert Day of Year

The Hubble Space Telescope

Unlocking the Secrets of the Universe

Daily Report #5798

Period Covered:
08:00 pm May 28, 2012 - 07:59 pm May 29, 2012
(DOY 150/0000z - 150/2359z)

Flight Operations Summary

Significant Spacecraft Anomalies: (The following are preliminary reports
of potential non-nominal performance that will be investigated.)

13349 - SCI: Loss of Lock Caused Loss of STIS Science Data@145/0739z

19248-0 - Clear COS Event Flag 3 for prop 12810 visits 10-11@150/1946z


FGS GSAcq		9		9
FGS REAcq		6		6
OBAD with Maneuver	6		6

The COS FUV Special Recovery activities (proposal 12810 visits 8 - 9) successfully completed today 
without incident.  The FUV was ramped to HVLow (-4069V/-4069V (100/100)) with the QE grid on, no 
elevated counts or HV current transients were observed in the engineering telemetry during or after 
the ramp.  The STScI and MOSES2 Engineering Teams have examined the relevant telemetry and 
confirmed all voltages, currents and temperatures were as expected. The voltage and current 
monitors matched the signatures seen in SMOV.  The COS Science Team at STScI has examined the 
science data and DCE memory dumps and has found no anomalous behavior.  No HV current transients or 
unexpected elevated count rates were observed in the DCE memory dumps.  The science data consisted 
of a single 300 second dark exposure with the QE grid on at HVLOW. No comparison with SMOV data was 
possible, since no darks at HVLOW were taken at that time. Comparison with similar data taken with 
the QE grid off in 12810 shows similar behavior.   The Engineering and Science Teams have given a 
"Go" to proceed with visit 10 and 11. Visits 10 and 11 are scheduled for Wednesday May 30th (DOY 
151).  The COS event flag 3 was cleared @150/19:46 via OR 19248-0  -jb   

Program Principal Investigator Program Title
Science Observations Scheduled
12478 Jeffrey Cuzzi, NASA Ames Research Center The Mysterious Redness of Saturn's Rings
12534 Harry Teplitz, California Institute of Technology The Panchromatic Hubble Ultra Deep Field: Ultraviolet Coverage
12548 Jay Farihi, University of Leicester Constraining Planet Formation in the Unique Evolved Binary HR 637 {GJ 86}
12570 Sylvain Veilleux, University of Maryland Deep FUV Imaging of Cool Cores in Galaxy Clusters
12576 Paul Kalas, University of California - Berkeley Orbit determination for Fomalhaut b and the origin of the debris belt halo
12671 John Biretta, Space Telescope Science Institute High-Precision Proper Motions in the M87 Jet
Calibration Observations Scheduled
12351 Knox Long, Space Telescope Science Institute IR Persistence 18
12689 Tiffany Borders, Space Telescope Science Institute WFC3 UVIS CCD Daily Monitor
12693 Kai Noeske, Space Telescope Science Institute WFC3/UVIS Charge Injection
12710 Jennifer Mack, Space Telescope Science Institute UVIS Bright Earth Flats
12742 Justin Ely, Space Telescope Science Institute CCD Dark Monitor Part 2
12744 Justin Ely, Space Telescope Science Institute CCD Bias and Read Noise Monitor-Part 2
12784 Elena Sabbi, Space Telescope Science Institute - ESA Characterization of UVIS Traps Via Charge-Injected Biases
Other Observations Scheduled
12810 Thomas Wheeler, Space Telescope Science Institute COS/FUV Special Recovery