Earlier reports Convert Day of Year

The Hubble Space Telescope

Unlocking the Secrets of the Universe

Daily Report #5799

Period Covered:
08:00 pm May 29, 2012 - 07:59 pm May 30, 2012
(DOY 151/0000z - 151/2359z)

Flight Operations Summary

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

13352 - SCI: GSAcq (1,2,1) results in Fine Lock Back-up (1,0,1)@150/0441z

19250-0 - Clear COS Event Flag 3 for prop 12810 visits 12-13@151/1813z


FGS GSAcq		10		10
FGS REAcq		6		6
OBAD with Maneuver	5		4

The COS FUV Special Recovery activities (proposal 12810 visits 10 - 11) successfully completed 
today without incident.  The FUV was ramped to the 2nd HV plateau (-5010V/-4963V (160/157)) with 
the QE grid off, 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 everything is nominal.  No HV current 
transients or unexpected elevated count rates were observed in the DCE memory dumps. The science 
data consisted of 2 sets of dark and wavecal exposures. The exposures were collected immediately 
after ramping to HVNom (160/157) and an hour later at the same HV level.  Comparisons with SMOV 
data taken with the QE grid on indicates comparable behavior with the grid off when the aging of 
the detector and temporal fluctuations are considered.  The Engineering and Science Teams have 
given a "Go" to proceed with visit 12 and 13. Visits 12 and 13 are scheduled for Thursday May 31th 
(DOY 152).  The COS event flag 3 was cleared @151/18:14 via OR 19250  -jb 

Program Principal Investigator Program Title
Science Observations Scheduled
12468 Keith Noll, NASA Goddard Space Flight Center How Fast Did Neptune Migrate? A Search for Cold Red Resonant Binaries
12473 David Sing, University of Exeter An Optical Transmission Spectral Survey of hot-Jupiter Exoplanetary Atmospheres
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}
12555 Robert da Silva, University of California - Santa Cruz On the Triggering of Quasars During First Passage
12576 Paul Kalas, University of California - Berkeley Orbit determination for Fomalhaut b and the origin of the debris belt halo
Calibration Observations Scheduled
12689 Tiffany Borders, Space Telescope Science Institute WFC3 UVIS CCD Daily Monitor
12693 Kai Noeske, Space Telescope Science Institute WFC3/UVIS Charge Injection
12720 Colin Cox, Space Telescope Science Institute NUV Detector Dark Monitor
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
12782 David Golimowski, Space Telescope Science Institute CCD Daily Monitor {Part 2}
Other Observations Scheduled
12810 Thomas Wheeler, Space Telescope Science Institute COS/FUV Special Recovery