Earlier reports Convert Day of Year

The Hubble Space Telescope

Unlocking the Secrets of the Universe

Daily Report #5476

Period Covered:
08:00 pm July 11, 2011 - 07:59 pm July 12, 2011
(DOY 193/0000z - 193/2359z)

Flight Operations Summary

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

12919 - SCI: GSACQ (1,2,1) fails to RGA control after LOL@192/2157z



FGS GSAcq		9		9
FGS REAcq		8		8
OBAD with Maneuver	7		7

Gyro Heater Reconfiguration; The gyro heater reconfiguration was executed as planned beginning at 
193/14:01 UTC. All gyros have been configured to use the secondary control heater. All SMS 
scheduled events completed successfully, and there was no science loss due to the reconfiguration. 

Program Principal Investigator Program Title
Science Observations Scheduled
12104 Marc Postman, Space Telescope Science Institute Through a Lens, Darkly - New Constraints on the Fundamental Components of the Cosmos
12209 Adam Bolton, University of Utah A Strong Lensing Measurement of the Evolution of Mass Structure in Giant Elliptical Galaxies
12210 Adam Bolton, University of Utah SLACS for the Masses: Extending Strong Lensing to Lower Masses and Smaller Radii
12215 Nancy Evans, Smithsonian Institution Astrophysical Observatory Searching for the Missing Low-Mass Companions of Massive Stars
12224 Naveen Reddy, University of California - Riverside Measuring the Stellar Populations of Individual Lyman Alpha Emitters During the Epoch of Peak Star Formation
12262 Justyn Maund, University of Copenhagen, Niels Bohr Institute Stellar Forensics II: A post-explosion view of the progenitors of core-collapse supernovae
12271 William Sparks, Space Telescope Science Institute Probing the Physics of Gas in Cool Core Clusters: Virgo
12287 Scott Friedman, Space Telescope Science Institute Constraining Models of Deuterium Depletion and Galactic Chemical Evolution with Improved Measurements of D/H
Calibration Observations Scheduled
11917 Peter McCullough, Space Telescope Science Institute IR Earth Flats Pathfinder
12342 Tiffany Borders, Space Telescope Science Institute WFC3 UVIS CCD Daily Monitor
12344 Tiffany Borders, Space Telescope Science Institute Cycle 18: UVIS Bowtie Monitor
12380 Bryan Hilbert, Space Telescope Science Institute Guard Darks
12401 Michael Wolfe, Space Telescope Science Institute Dark Monitor Part 2
12403 Michael Wolfe, Space Telescope Science Institute CCD Bias and Read Noise Monitor-Part 2
12404 Michael Wolfe, Space Telescope Science Institute STIS CCD Hot Pixel Annealing