STEREO Weekly Meeting Minutes for 2007-03-06 (Week 10) ANNOUNCEMENTS ------------- INSTRUMENT AND SPACECRAFT STATUS -------------------------------- * All subsystems on both spacecraft are nominal. DISCUSSION AND OPERATIONS CONSTRAINTS ------------------------------------- Week 9: * On Monday, Feb. 26 the Mission Operations Macros were updates in EPROM copy 1 and 2 to incorporate all changes since launch and loaded to RAM on Feb. 20. on A and B. * On Monday, Feb. 26 SECCHI patched their Flight software to version 5.02 on Behind. * A C&DH software patch was installed on Ahead on Feb. 27 and on Behind Wednesday, Feb. 28. * The Ahead HGA calibration roll on Wednesday, Feb. 28 was cancelled. It has been rescheduled for March 14. * Wednesday, Feb. 28, ~1 minute of VC7 data was lost from 18:58-18:59. DSS-26 indicated that the Turbo Decoder went out of lock. * Wednesday, Feb. 28, a new thruster set A deadzone parameter was loaded to G&C RAM on Ahead. * On Thursday, Mar. 1 at 00:00 UT a daylight savings time patch was installed on the MOC Workstation. * Ahead momentum dump (# 3) at 19:30 UT on Thursday, Mar. 1 was completed successfully. Will stay on HGA. * Sunday, Mar. 4 at the end of the track, the SSR was not completely played back. This was not an anomaly, the recorder was too full. * On Behind, Feb. 28 and Mar. 4, the G&C anomaly count incremented with an anomaly of HC_GT__Missing. SECCHI was commanding at the time and they had issued a software task re-load that caused the Guide Telescope to go dead on the 1553 bus for short time causing the anomaly. Week 10: * On Monday, Mar. 5 at 23:00 UT the daylight saving patch was installed on the spacecraft telemetry servers. * Thursday, Mar. 8, stereodata server will be patched at 22:00. Send no commands. * Daylight saving time switch on Sunday, Mar. 11 Week 11: * HGA Calibration on Behind on Monday March 12. There will be an 8 hour track, with the pointers reset at the end of the track. * SECCHI HI coincident 90/270 degree rolls for both spacecraft at 10:00 UT on Thursday, March 13. At the beginning of the event the Ahead spacecraft will be rolled to the same roll angle as Behind. * The Ahead HGA calibration roll on Wednesday, Mar. 14 at 15:45. * SECCHI HI 180 degree rolls for Ahead and Behind set for Thursday March 15 at 15:40 UT. As with the March 13 roll, at the beginning of the roll Ahead will be rolled to the same roll angle as Behind. Week 12: Other: * HGA calibration (#4) April 3 and Mom. dump on behind. (week 14) * There will be momentum dumps for Ahead on April 12 and Behind on April 15. (week 15) * SECCHI campaign May 4 - May 17. (week 18) * The S/WAVES team wants to bring to the attention a series of impulse discharges they have been observing with S/WAVES on the Ahead spacecraft. If these are not internal to the S/WAVES instrument or due to a solar wind phenomenon, then they might be due to an external electrostatic discharge in the spacecraft. These suddenly started on Jan. 28, with peaks around Feb. 2-3, 12, and 16. They diminished a lot by Feb. 18, but might still be occurring. It is possible this may be occurring on behind too, but if so it is much lower in intensity. Keith requests that people consider what might be causing this. Plots are located at https://sds.jhuapl.edu/teams/dir.php?path=./swaves/moc_dropbox A password is required. COORDINATED OBSERVATIONS ------------------------ ------------------------------------------------------------------------ ------- Scheduled activities for Week 09: M Feb 26 (057) T Feb 27 (058) W Feb 28 (059) Ahead: HGA calibration roll (cancelled) T Mar 01 (060) Ahead: Momentum dump, 19:30 UT (completed) F Mar 02 (061) S Mar 03 (062) S Mar 04 (063) ------------------------------------------------------------------------ ------- Scheduled activities for Week 10: M Mar 05 (064) T Mar 06 (065) W Mar 07 (066) T Mar 08 (067) F Mar 09 (068) S Mar 10 (069) S Mar 11 (070) ------------------------------------------------------------------------ ------- Scheduled activities for Week 11: M Mar 12 (071) Behind: HGA calibration T Mar 13 (072) SECCHI HI coincident 90/270 degree rolls W Mar 14 (073) Ahead: HGA calibration roll T Mar 15 (074) SECCHI HI 180 degree rolls F Mar 16 (075) S Mar 17 (076) S Mar 18 (077) Notes: * SUMER/Hinode campaign, Mar 13-Apr 30 ------------------------------------------------------------------------ ------- Scheduled activities for Week 12: M Mar 19 (078) T Mar 20 (079) W Mar 21 (080) T Mar 22 (081) F Mar 23 (082) S Mar 24 (083) S Mar 25 (084) ------------------------------------------------------------------------ -------