| Earlier reports | Convert Day of Year |
Daily Report #5777
Period Covered:
08:00 pm May 7, 2012 - 07:59 pm May 8, 2012
(DOY 129/0000z - 129/2359z)
Significant Spacecraft Anomalies: (The following are preliminary reports of potential non-nominal performance that will be investigated.) HSTARs: 13328 - SCI: TDF up late for REAcq (2,1,2)@127/1754z 13329 - SCI:GSAcq (2,1,1) resulted in Fine Lock Backup (2,0,2)@128/0524z COMPLETED OPS REQUEST: none COMPLETED OPS NOTES: none FGS ACQ STATUS: SCHEDULED SUCCESSFUL FGS GSAcq 8 8 FGS REAcq 8 8 OBAD with Maneuver 6 6 SIGNIFICANT EVENTS: Flash Report: Part 2 of the COS NUV anomalous shutdown recovery was successfully completed today at 129/15:58. Part 2 entailed a slow, partial ramp-up of the MCP high voltage. The ramp-up was commanded in four phases, stopping at plateaus of -500V, -1000V, -1500V, and -1750V. There were four minute waits at each plateau. Then the PC voltage was ramped to -50V. An 1800 second time tag dark images was taken during the ramps. Once the HV ramps were completed software global monitor were commanded to look at X, Y, Z, W, OR, EV, and VE counts for one minute each during a dark time-tag exposure. A review of all of the relevant NUV telemetry was done. All of the currents and voltages were as expected. The events types and rates were extracted and are consistent with those collected during SMOV. At 129/15:58 the NUV was returned to hold and COS event flag 2 was set. Event flag 2 will be cleared after the science data is analyzed; the dark images should be available for analysis at the institute by 130/00:00. After the all clear is given by the COS Science Team and OR will be issued to clear event flag 2, I expect this to happen around 130/01:00. The FOT has been notified and is ready to execute the OR 1st thing Wednesday morning, likely during the 130/12:13 forward support. Part 3 of the COS NUV anomalous shutdown recovery is scheduled for 130/15:34 - 16:51, it is similar to part2 except the detector will be ramped to it nominal operating voltages
| Program | Principal Investigator | Program Title |
|---|---|---|
| Science Observations Scheduled | ||
| 12192 | James Lauroesch, University of Louisville Research Foundation, Inc. | A SNAPSHOT Survey of Interstellar Absorption Lines |
| 12455 | Marc Postman, Space Telescope Science Institute | Through a Lens, Darkly - New Constraints on the Fundamental Components of the Cosmos |
| 12484 | Gregory Schwarz, American Astronomical Society | STIS UV spectroscopy of a bright nova during its super soft X-ray phase |
| 12488 | Mattia Negrello, Open University | SNAPshot observations of gravitational lens systems discovered via wide-field Herschel imaging |
| 12549 | Thomas Brown, Space Telescope Science Institute | The Formation History of the Ultra-Faint Dwarf Galaxies |
| 12550 | Daniel Apai, University of Arizona | Physics and Chemistry of Condensate Clouds across the L/T Transition - A SNAP Spectral Mapping Survey |
| 12608 | Moire Prescott, University of California - Santa Barbara | Small-scale Morphology and Continuum Colors of Giant Lya Nebulae |
| Calibration Observations Scheduled | ||
| 12689 | Tiffany Borders, Space Telescope Science Institute | WFC3 UVIS CCD Daily Monitor |
| 12695 | Michael Dulude, Space Telescope Science Institute | IR Dark Monitor |
| 12724 | Thomas Wheeler, Space Telescope Science Institute | COS NUV Detector Recovery After Anomalous Shutdown |
| 12731 | Pey Lian Lim, Space Telescope Science Institute | ACS Internal CTE Monitor and Short Darks |
| 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 |
| 12803 | Knox Long, Space Telescope Science Institute | Guard Darks |