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Daily Report #5812
Period Covered:
08:00 pm June 11, 2012 - 07:59 pm June 12, 2012
(DOY 164/0000z - 164/2359z)
Significant Spacecraft Anomalies: (The following are preliminary reports of potential non-nominal performance that will be investigated.) HSTARs: none COMPLETED OPS REQUEST: 19271-0 - Clear COS Event Flag 3@164/1527z COMPLETED OPS NOTES: none FGS ACQ STATUS: SCHEDULED SUCCESSFUL FGS GSAcq 9 9 FGS REAcq 8 8 OBAD with Maneuver 6 6 SIGNIFICANT EVENTS: The COS FUV Special Recovery activities (proposal 12810 visits 26 - 27) successfully completed today without incident. The FUV was ramped to -5293V for segment A (178 counts) and -5246V (175 count) for B, these are the "normal" HV levels. The QE grid was on. No elevated counts or HV current transients were observed in the engineering telemetry during or after the ramp. The STScI and MOSES2 Engineering Teams have examined the relevant telemetry and confirmed all voltages, currents and temperatures were as expected. The voltage and current monitors matched the signatures seen in SMOV. The COS Science Team at STScI has examined the science data and DCE memory dumps and everything is nominal. No HV current transients or unexpected elevated count rates were observed in the DCE memory dumps. The science data consisted of 2 sets of dark and wavecal exposures. The exposures were collected immediately after ramping to HVNom (178/175). Comparisons with SMOV data taken indicates comparable behavior when the aging of the detector and temporal fluctuations are considered. The Engineering and Science Teams have given a �Go� to resume normal FUV HV activities. The COS event flag 3 was cleared @164/15:30 via OR 19271. Many thanks to all who help investigate, test, plan and successfully execute the FUV HV Recovery. Next FUV HV activity is currently schedule for 165/13:10 as part of proposal 12716 (FUV Detector Dark Monitor)
| 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 |
| 12521 | Xin Liu, University of California - Los Angeles | The Frequency and Demographics of Dual Active Galactic Nuclei |
| 12528 | Philip Massey, Lowell Observatory | Probing the Nature of LBVs in M31 and M33: Blasts from the Past |
| 12549 | Thomas Brown, Space Telescope Science Institute | The Formation History of the Ultra-Faint Dwarf Galaxies |
| 12668 | Slawomir Piatek, New Jersey Institute of Technology | Proper Motion Survey of Classical and SDSS Local Group Dwarf Galaxies |
| 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 |
| 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 |
| 12765 | Justin Ely, Space Telescope Science Institute | STIS CCD Hot Pixel Annealing |
| 12766 | Elena Mason, Space Telescope Science Institute - ESA | STIS CCD Spectroscopic Flat-field Monitor |
| 12784 | Elena Sabbi, Space Telescope Science Institute - ESA | Characterization of UVIS Traps Via Charge-Injected Biases |
| 12803 | Knox Long, Space Telescope Science Institute | Guard Darks |
| Other Observations Scheduled | ||
| 12810 | Thomas Wheeler, Space Telescope Science Institute | COS/FUV Special Recovery |