Earlier reports Convert Day of Year

The Hubble Space Telescope

Unlocking the Secrets of the Universe

Daily Report #5328

Period Covered:
07:00 pm February 13, 2011 - 06:59 pm February 14, 2011
(DOY 45/0000z - 45/2359z)

Flight Operations Summary

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

12679 - SCI: Reacquisition takes multiple attempts at FL@028/0251z

12680 - SCI: GSAcq(2,1,1) Loss of Lock@044/0129z

12681 - SCI: REAcq(2,1,1) SCI: REAcq(2,1,1) at 045/04:17:03 and 045/05:52:53 fails to RGA control,
FGS 2 Search Radius Limit exceeded.@045/0452z
Observations affected: STIS 6-11, Proposal ID#12278.

12683 - SCI: REAcq runs long due to LOL cycling@027/0549z

12684 - SCI: GSAcq (1,2,1) runs long due to large search @026/1553z

12685 - SCI: REAcq runs long due to extended Search@029/0043z

12686 - SCI: GSAcq(2,1,1) results in fine lock backup (2,0,2) using FGS-2 without FGSs indication
flags posted.@045/1547z

19026-0 - Modify FGS Attitude Error Threshold and Maximum Attitude Error Update Limit@45/1658z


FGS GSAcq		8		8
FGS REAcq		7		5
OBAD with Maneuver	7		7

STIS FSW OV0009 (CS5.01A/MIE4.4) was successfully installed via stored commanding. Memory Monitors 
and a Checskum were used to confirm a good install. First use of the updated target acquisition 
macro OFINDSLT (were the updated paramaters MinimumLampFluxThreshold and LampStabilizeOnTime are 
used) executed at 045/01:16 successfully.

Ops Request 19026-0 was completed at 2011/045 16:58:12 to modify the FGS Attitude Error Threshold 
and Maximum Attitude Error Update Limit for Gyro 3 Attitude Observer Anomaly (AOA) mitigation. The 
GS re-acquisition at 045/19:00 was successful with a residual sequential update of [1.438 -0.209 
-0.264] arcsec. 

Program Principal Investigator Program Title
Science Observations Scheduled
11644 Michael Brown, California Institute of Technology A dynamical-compositional survey of the Kuiper belt: a new window into the formation of the outer solar system
12199 Peter Schneider, Universitat Hamburg, Hamburger Sternwarte The shocking truth about DG Tau's jet
12234 Wesley Fraser, California Institute of Technology Differentiation in the Kuiper belt: a search for silicates on icy bodies.
12278 Thomas Ayres, University of Colorado at Boulder Advanced Spectral Library Project: Cool Stars
12292 Tommaso Treu, University of California - Santa Barbara SWELLS: doubling the number of disk-dominated edge-on spiral lens galaxies
12317 Michael Liu, University of Hawaii Dynamical Masses of the Coolest Brown Dwarfs
12365 Junfeng Wang, Smithsonian Institution Astrophysical Observatory A CHandra survey of Extended Emission-line Regions in nearby Seyfert galaxies {CHEERS}
Calibration Observations Scheduled
12339 Elena Sabbi, Space Telescope Science Institute UVIS Lflat
12342 Tiffany Borders, Space Telescope Science Institute WFC3 UVIS CCD Daily Monitor
12384 David Golimowski, Space Telescope Science Institute CCD Daily Monitor {Part 1}
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