The Hubble Space Telescope
Unlocking the Secrets of the Universe

Daily Report #5804

Period Covered:
08:00 pm June 3, 2012 - 07:59 pm June 4, 2012
(DOY 156/0000z - 156/2359z)
Flight Operations Summary

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

HSTARs:
none

COMPLETED OPS REQUEST:
19263-0 - Clear COS Event Flag 3 for prop 12810 visits 18-19@156/1802z

COMPLETED OPS NOTES:
none

FGS ACQ STATUS:
SCHEDULED SUCCESSFUL
FGS GSAcq 7 7
FGS REAcq 9 9
OBAD with Maneuver 6 6

SIGNIFICANT EVENTS:
The COS FUV Special Recovery activities (proposal 12810 visits 16 - 17) successfully completed
today without incident. The FUV was ramped to the 2nd HV plateau (-5010V/-4963V (160/157)) similar
to visit 10; however this time the QE grid was 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
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 indicates comparable behavior when the aging of the detector
and temporal fluctuations are considered. The Engineering and Science Teams have given a "Go" to
proceed with visit 18 and 19. Visits 18 and 19 are scheduled for Tuesday June 5 (DOY 157). The COS
event flag 3 was cleared @156/18:02 via OR 19263 -jb




Program Principal Investigator Program Title
Science Observations Scheduled
12461 Adam Riess, The Johns Hopkins University Supernova Follow-up for MCT
12500 Sugata Kaviraj, Imperial College of Science Technology and Medicine High-resolution UV studies of SAURON galaxies with WFC3: constraining recent star formation and its drivers in local early-type galaxies
12534 Harry Teplitz, California Institute of Technology The Panchromatic Hubble Ultra Deep Field: Ultraviolet Coverage
12582 Ariel Goobar, Stockholm University Probing the explosion environment and origin of Type Ia supernovae
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
12695 Michael Dulude, Space Telescope Science Institute IR Dark Monitor
12709 Cheryl Pavlovsky, Space Telescope Science Institute UVIS and IR Earth Flats
12732 David Golimowski, Space Telescope Science Institute CCD Hot Pixel Annealing
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