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Daily Report #5827
Period Covered:
08:00 pm June 26, 2012 - 07:59 pm June 27, 2012
(DOY 179/0000z - 179/2359z)
Significant Spacecraft Anomalies: (The following are preliminary reports of potential non-nominal performance that will be investigated.) HSTARs: 13401 - SCI: GSAcq(1,2,1) required two attempts@173/1243z COMPLETED OPS REQUEST: 19274-0 - ACS Memory dump@179/1954z 19275-0 - Recover ACS from Suspend@179/2016z 19276-0 - Retract ACS CalDoor@179/2123z COMPLETED OPS NOTES: none FGS ACQ STATUS: SCHEDULED SUCCESSFUL FGS GSAcq 8 8 FGS REAcq 7 7 OBAD with Maneuver 5 5 SIGNIFICANT EVENTS: Flash Report: ACS Supend Day 179 ACS Suspended around 2012/179:11:29 with ESB message ACS 104, P=23 status buffer message indicating the reason for the Suspend was a CR Reset caused by a software breakpoint Intel Exception. There were no other indications of anomalies. Everything appears similar to the 2004 and 2010 Suspend events. A Project Briefing was held today at 1 PM local to review the status following the ACS Suspend and approve the forward plan. Charts are posted at http://edocs.hst.nasa.gov/hstsysman/Briefings/AnomalyBrief/ACS%20Suspend%20Day%20179%202012.pptx ACS Suspended around 2012/179:11:29 with ESB message ACS 104, P=23 status buffer message indicating the reason for the Suspend was an MEB Reset caused by an SEU induced software breakpoint Intel Exception. There were no other indications of anomalies. It was agreed that the signature was identical to the 2010/273 Suspend event. An ACS Memory dump is scheduled for 19:39 UTC with Ops Request 19274. This will use an updated version of CCL jmdmpraw that was tested today and updated to the CCS strings via GSCA 2186. Following Payload FSW analysis, we will then proceed with the ACS recovery using Ops Request 19275. A flash report will be issued when the recovery is complete. ACS was recovered from Suspend mode at 179/20:15 via OR #19275 to WFHROper. In addition, OR# 19276 was executed to retract the ACS CalDoor to its science intercept position. ACS next science activity is planned for 180/14:02 (proposal 12457). ACS entered Suspend Mode due to a Intel386 "software breakpoint exception" at 179/11:28.
| Program | Principal Investigator | Program Title |
|---|---|---|
| Science Observations Scheduled | ||
| 12457 | Marc Postman, Space Telescope Science Institute | Through a Lens, Darkly - New Constraints on the Fundamental Components of the Cosmos |
| 12473 | David Sing, University of Exeter | An Optical Transmission Spectral Survey of hot-Jupiter Exoplanetary Atmospheres |
| 12539 | Nils Bergvall, Uppsala Astronomical Observatory | A novel approach to find Lyman continuum leaking galaxies at z~0.3 with COS |
| 12568 | Matthew Malkan, University of California - Los Angeles | WFC3 Infrared Spectroscopic Parallel Survey WISP: A Survey of Star Formation Across Cosmic Time |
| 12572 | Michele Trenti, University of Cambridge | The Brightest of Reionizing Galaxies Pure Parallel Survey |
| 12578 | N. Forster Schreiber, Max-Planck-Institut fur extraterrestrische Physik | Constraints on the Mass Assembly and Early Evolution of z~2 Galaxies: Witnessing the Growth of Bulges and Disks |
| 12666 | Thomas Brown, Space Telescope Science Institute | The WFC3 Galactic Bulge Treasury Program: Populations, Formation History, and Planets |
| 12801 | Harold Weaver, The Johns Hopkins University Applied Physics Laboratory | Hubble Deep Search for Debris and Satellites in the Pluto System in Support of NASA's New Horizons Mission |
| Calibration Observations Scheduled | ||
| 12688 | Tiffany Borders, Space Telescope Science Institute | Cycle 17: UVIS Bowtie Monitor |
| 12689 | Tiffany Borders, Space Telescope Science Institute | WFC3 UVIS CCD Daily Monitor |
| 12716 | Colin Cox, Space Telescope Science Institute | FUV Detector Dark Monitor |
| 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 |
| 12776 | Colin Cox, Space Telescope Science Institute | MAMA Dark Monitor |
| 12782 | David Golimowski, Space Telescope Science Institute | CCD Daily Monitor {Part 2} |
| 12803 | Knox Long, Space Telescope Science Institute | Guard Darks |