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Daily Report #5800
Period Covered:
08:00 pm May 30, 2012 - 07:59 pm May 31, 2012
(DOY 152/0000z - 152/2359z)
Significant Spacecraft Anomalies: (The following are preliminary reports of potential non-nominal performance that will be investigated.) HSTARs: none COMPLETED OPS REQUEST: 19251-0 - Clear COS Event Flag 3 for prop 12810 visits 14-15@152/1938z COMPLETED OPS NOTES: none FGS ACQ STATUS: SCHEDULED SUCCESSFUL FGS GSAcq 8 8 FGS REAcq 7 7 OBAD with Maneuver 5 5 SIGNIFICANT EVENTS: The COS FUV Special Recovery activities (proposal 12810, visits 12 - 13) successfully completed today without incident. The FUV was ramped to the 1st HV plateau (-4916V/-4869V (154/151)) similar to visit 6; however this time 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 (154/151) and an hour later at the same HV level. Comparisons with SMOV data taken indicate comparable behavior when the aging of the detector and temporal fluctuations are considered. The Engineering and Science Teams have given a "Go" to proceed with visit 14 and 15. Visits 14 and 15 are scheduled for Friday June 1 (DOY 153). The COS event flag 3 was cleared @152/19:36 via OR 19251 -jb
| 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 |
| 12487 | Xiaohui Fan, University of Arizona | Probing Population III Star Formation in a z=7 Galaxy |
| 12534 | Harry Teplitz, California Institute of Technology | The Panchromatic Hubble Ultra Deep Field: Ultraviolet Coverage |
| 12576 | Paul Kalas, University of California - Berkeley | Orbit determination for Fomalhaut b and the origin of the debris belt halo |
| Calibration Observations Scheduled | ||
| 12351 | Knox Long, Space Telescope Science Institute | IR Persistence 18 |
| 12688 | Tiffany Borders, Space Telescope Science Institute | Cycle 17: UVIS Bowtie Monitor |
| 12689 | Tiffany Borders, Space Telescope Science Institute | WFC3 UVIS CCD Daily Monitor |
| 12691 | Vera Kozhurina-Platais, Space Telescope Science Institute | WFC3/UVIS internal CTE 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 |
| 12784 | Elena Sabbi, Space Telescope Science Institute - ESA | Characterization of UVIS Traps Via Charge-Injected Biases |
| Other Observations Scheduled | ||
| 12810 | Thomas Wheeler, Space Telescope Science Institute | COS/FUV Special Recovery |