The Hubble Space Telescope
Unlocking the Secrets of the Universe

Daily Report #5336

Period Covered:
07:00 pm February 21, 2011 - 06:59 pm February 22, 2011
(DOY 53/0000z - 53/2359z)
Flight Operations Summary

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

HSTARs:
12707 - SCI: GSAcq(1,2,1) resulted in finelock backup on FGS1 due to search radius limit
exceeded.@053/1157z
Observations possibly affected: STIS 28 Proposal ID#12405, STIS 29 Proposal ID#12400, ACS 24-25
Proposal ID#12392


COMPLETED OPS REQUEST:
none

COMPLETED OPS NOTES:
none

FGS ACQ STATUS:
SCHEDULED SUCCESSFUL
FGS GSAcq 11 11
FGS REAcq 4 4
OBAD with Maneuver 11 11

SIGNIFICANT EVENTS:
none



Program Principal Investigator Program Title
Science Observations Scheduled
11665 Thomas Brown, Space Telescope Science Institute The Formation Mechanisms of Extreme Horizontal Branch Stars
12161 David Ardila, Jet Propulsion Laboratory Accretion in Close Pre-Main-Sequence Binaries
12215 Nancy Evans, Smithsonian Institution Astrophysical Observatory Searching for the Missing Low-Mass Companions of Massive Stars
12228 Glenn Schneider, University of Arizona Probing for Exoplanets Hiding in Dusty Debris Disks: Inner {<10 AU} Disk Imaging, Characterization, and Exploration
12278 Thomas Ayres, University of Colorado at Boulder Advanced Spectral Library Project: Cool Stars
12286 Hao-Jing Yan, The Ohio State University Hubble Infrared Pure Parallel Imaging Extragalactic Survey {HIPPIES}
12289 J. Howk, University of Notre Dame A COS Snapshot Survey for z < 1.25 Lyman Limit Systems
12307 Andrew Levan, The University of Warwick A public SNAPSHOT survey of gamma-ray burst host galaxies
12366 Francesca Civano, Smithsonian Institution Astrophysical Observatory A Runaway Black Hole in COSMOS
Calibration Observations Scheduled
12342 Tiffany Borders, Space Telescope Science Institute WFC3 UVIS CCD Daily Monitor
12392 Ralph Bohlin, Space Telescope Science Institute Photometric Cross-Calibration using Stellar Flux Standards
12400 Michael Wolfe, Space Telescope Science Institute Dark Monitor Part 1
12402 Michael Wolfe, Space Telescope Science Institute CCD Bias and Read Noise Monitor-Part 1
12405 Elena Mason, European Southern Observatory - Chile STIS CCD Spectroscopic Flat-field Monitor
12420 Wei Zheng, The Johns Hopkins University NUV Detector Dark Monitor