STEREO Weekly Meeting Minutes for 2014-03-25 (Week 13) ANNOUNCEMENTS ------------- * None. INSTRUMENT and SPACECRAFT STATUS -------------------------------- * All subsystems on both spacecraft are nominal. DISCUSSION AND OPERATIONS CONSTRAINTS ------------------------------------- Week 12 (Mar 17-23) * On day 081 (Mar 22), during the DSS-24 support for Ahead, no commanding or ranging was conducted due to a transmitter problem. See DR #G114862 for more information. * On day 076 (Mar 17), the G&C parameter qi2g_timeout was increased from 1e6 (11 days) to 1e7 (115 days) in RAM on both spacecraft. This parameter has been timing out whenever the IMU has been off for > 11 days and alarming MOps. * On day 081 (Mar 22), the SSR science partitions on Behind filled as follows: SECCHI (Part 19) remained 100% full at 1800z for 2.0 hours. * The average daily SSR playback volume during the week was 3.0 gigabits for Ahead, and 3.5 gigabits for Behind. Week 13 (Mar 24-30) * The 28th SECCHI stepped calibration roll on Behind is today (Mar 25), starting at 16:40 UT. This is the midpoint roll. * The 66th momentum dump on Ahead is scheduled for Wednesday, Mar 26, with ignition at 21:30 UT. * The final MOps permanent macro release 1.1.19 and fault protection release 2.3.13 will be written to EEPROM on Behind on Thursday, Mar 27. * Ahead has 10 passes during the week, and overall coverage is nominal. A 70 meter pass is scheduled for Wednesday, Mar 26 (D14 at 720 kbps). The following passes will be carried out at 160 kbps: Monday, Mar 24 (D26), Tuesday, Mar 25 (D24), and Thursday, Mar 27 (D25). * Behind has 10 passes during the week, and overall coverage in nominal. There are three 70 meter passes scheduled: Monday, Mar 24 (D43, D14 at 720 kbps), and Tuesday, Mar 25 (D14). The following passes will be carried out at 160 kbps: Thursday, Mar 27 (D55), Friday, Mar 28 (D26), and Sunday, Mar 30 (D26). The station 26 pass on Saturday, Mar 29 will be carried out at 240 kbps. * The station 24 transmitter is still down. This will affect the Ahead pass later today (Mar 25). Week 14 (Mar 31-Apr 6) * The 61st momentum dump on Behind is scheduled for Wednesday, Apr 2, starting at 15:30 UT. * A Project Interface Test (PIT) with station 25 is scheduled for Behind on Thursday, Apr 3. There will be no instrument commanding or SSR playback during this test. * A Return-To-Service test with Behind with station 63 is scheduled for Saturday, Apr 5. There will be no instrument commanding or SSR playback during this test. * Ahead has 11 passes during the week, and overall coverage is short 13.3 hours, mainly between Monday-Thursday, Mar 31-Apr 3. 70 meter passes are scheduled for Friday, Apr 4 (D14 at 720 kbps), and Sunday, Apr 6 (D43). The following passes will be carried out at 160 kbps, all using station 26: Monday, Mar 31, Wednesday, Apr 2, and Saturday, Apr 5. The station 26 pass on Sunday, Apr 6, will be carried out at 240 kbps. * Behind has 8 passes during the week, and overall coverage is short 6.4 hours, mainly between Thursday-Friday, Apr 3-4. 70 meter passes are scheduled for Monday, Mar 31 (D14 at 720 kbps), and Sunday, Apr 6 (D43). The following passes will be carried out at 160 kbps: Tuesday, Apr 1 (D26), and Wednesday, Apr 2 (D55). * Additional passes, one for Ahead on Tuesday, and one for Behind on Wednesday, are in the process of being added to the schedule. Week 15 (Apr 7-13) * A Return-To-Service test with Ahead with station 63 is scheduled for Monday, Apr 7. There will be no instrument commanding or SSR playback during this test. * Ahead has 13 passes during the week, and overall coverage is nominal. 70 meter passes are scheduled for Monday, Apr 7, and Thursday, Apr 10, both using station 14 at 720 kbps. The following passes will be carried out at 160 kbps: Thursday, Apr 10 (D26), Saturday, Apr 12 (D55), and Sunday, Apr 13 (D65, D25). * Behind has 11 passes during the week, and overall coverage is nominal. A 70 meter pass is scheduled for Tuesday, Apr 8 (D14 at 720 kbps). The following passes will be carried out at 160 kbps: Tuesday, Apr 8 (D26), Thursday, Apr 10 (D55, D25), Saturday, Apr 12 (D15), and Sunday, Apr 13 (D55, D26). The station 26 pass on Friday, Apr 11, will be carried out at 240 kbps. Week 16 (Apr 14-20) * Ahead has 13 passes during the week, and overall coverage is nominal. 70 meter passes are scheduled for Monday, Apr 14 (D63 at 720 kbps), Tuesday, Apr 15 (D63, D14 at 720 kbps), Wednesday, Apr 16 (D63), and Friday, Apr 18 (D43). The following passes will be carried out at 160 kbps: Thursday, Apr 17 (D55, D24), Friday, Apr 18 (D24), Saturday, Apr 19 (D15), and Sunday, Apr 20 (D55). * Behind has 10 passes during the week, and overall coverage is nominal. 70 meter passes are scheduled for every day of the week except Friday, and all of the passes are carried out at 720 kbps except Sunday. The following passes will be carried out at 160 kbps: Thursday, Apr 17 (D25), Friday, Apr 18 (D55), Saturday, Apr 19 (D24), and Sunday, Apr 20 (D25). Week 17 (Apr 21-27) * Ahead has 11 passes during the week, and overall coverage is nominal. 70 meter passes are scheduled for Monday, Apr 21 (D63 at 720 kbps), Tuesday, Apr 22 (D63), Wednesday, Apr 23 (D14), Thursday, Apr 24 (D43), and Friday, Apr 25 (D43 at 720 kbps). The following passes will be carried out at 160 kbps: Thursday, Apr 24 (D55), Friday, Apr 25 (D55), Saturday, Apr 26 (D54, D25), and Sunday, Apr 27 (D54, D25). * Behind has 13 passes during the week, and overall coverage is nominal. 70 meter passes are scheduled for Monday, Apr 21 (D63 at 720 kbps), Wednesday, Apr 23 (D43), and Sunday, Apr 27 (D43 at 720 kbps). The following passes will be carried out at 160 kbps: Wednesday, Apr 23 (D54), Thursday, Apr 24 (D54), Friday, Apr 25 (D55), Saturday, Apr 26 (D55, D15), and Sunday, Apr 27. The station 26 pass on Friday, Apr 25, will be carried out at 240 kbps. Other * A Science Working Group meeting was held Friday, Mar 21, during which there was a discussion about solar conjuction operations. Only one instrument team, SWAVES, expressed interest in staying on during the conjunction. The MOC will start discussions soon with the instrument teams about the details of the solar conjunction operations. COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 13: M Mar 24 (083) T Mar 25 (084) Behind: SECCHI stepped calibration roll, 16:40 UT W Mar 26 (085) Ahead: Momentum dump, 21:30 UT T Mar 27 (086) F Mar 28 (087) S Mar 29 (088) S Mar 30 (089) ------------------------------------------------------------------------------- Scheduled activities for Week 14: M Mar 31 (090) T Apr 01 (091) W Apr 02 (092) Behind: Momentum dump, 15:30 UT T Apr 03 (093) Behind: PIT test with station 25 F Apr 04 (094) S Apr 05 (095) Behind: Return-to-service test with station 63 S Apr 06 (096) Notes: * Significant telemetry shortages are expected for both spacecraft during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 15: M Apr 07 (097) Ahead: Return-to-service test with station 63 T Apr 08 (098) W Apr 09 (099) T Apr 10 (100) F Apr 11 (101) S Apr 12 (102) S Apr 13 (103) ------------------------------------------------------------------------------- Scheduled activities for Week 16: M Apr 14 (104) T Apr 15 (105) W Apr 16 (106) T Apr 17 (107) F Apr 18 (108) S Apr 19 (109) S Apr 20 (110) ------------------------------------------------------------------------------- Scheduled activities for Week 17: M Apr 21 (111) T Apr 22 (112) W Apr 23 (113) T Apr 24 (114) F Apr 25 (115) S Apr 26 (116) S Apr 27 (117) ------------------------------------------------------------------------------- Upcoming events: 2014: * Apr 29 Behind: Mercury transit * Sep 07-Nov 15 Behind: Passage of Comet Siding Spring through HI2-B * Sep 21 MAVEN arrival at Mars * Oct 17 Behind: Comet Siding Spring encounter with Mars 2015: * Jan 14 - Mar 19 (TBC) Behind: Spacecraft behind Sun * Mar DAWN - Ceres arrival * Feb 11 - Jul 08 (TBC) Ahead: Spacecraft behind Sun * Aug 25 - Oct 19 (TBC) Behind: Possible interference from Sun * Jul DAWN - End of nominal mission 2016: * Jul 5 Juno arrival at Jupiter 2017: * Jul 11 Ahead: Switch downlink rate to 160 kbps * Jul 22 Behind: Switch downlink rate to 160 kbps 2018: * Mar 5 Ahead: Mercury transit