SOHO Daily Meeting - Thursday, 4 May 2000 FOT Briefing ------------ Spacecraft Status: Nominal Spacecraft Anomalies: None Accomplished Activities: VIRGO Planned Activities: VIRGO, CELIAS DPU Patch, NOM HGA Table, New tracking star Ground Anomalies: 124/1545 - TC Block Sequence Error due to wayward command (11 CDS NRT cmds retransmitted; NRT paused 7 mins) 124/1600 - TGC problem at D16 caused bad clock corr result 125/0805 - Unable to lock RCVR1 and range at D66 Solar Status -------------- EIT daily On-Line Solar Status and observations: http://umbra.nascom.nasa.gov/eit/plan/log_form20000504.html LASCO daily On-Line Solar Status and observations: http://lasco-www.nrl.navy.mil/observations/2000/obs20000504.html FROM NOAA WWW PAGE: SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW WITH A SLIGHT CHANCE OF AN M-CLASS EVENT FROM REGION 8970 OR 8971 (N18W85) AS EACH REGION PASSES OVER THE WEST LIMB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET TO UNSETTLED WITH ISOLATED PERIODS OF ACTIVE CONDITIONS POSSIBLE. Instruments ------------ CDS: See report below from MEDOC SUMER: See report below from MEDOC UVCS: Today: 24 hour synoptic program with profile studies in the southeast. Tomorrow: Galileo study (124 and 135 degrees) and mini-synoptic (4 hours). LASCO: C2 and C3 synoptics. EIT: Nominal, doing 195 CME watch and synoptics. MDI: Performed calibrations yesterday. Will stay with high resolution observations throughout the weekend. TRACE: Today, JOP107 and filament study with SUMER. For tomorrow, they will basically follow SUMER's target selection. (Will work out detailed program later today). =========================================================================== Report from MEDOC ----------------- Announcements: -------------- Welcome to Robert Erdelyi from Sheffield, Gerry Doyle from Armagh, Maria Madjarska from Sofia, and Lidia van Driel from MEUDON who joined us today. Raw evaluation of observations from May 3: ------------------------------------------ CDS: JOP 107 => the prominence at the southern limb is not there JOP 120 => probably OK. The data are not evaluated yet. SUMER: JOP 107 same as CDS Filament oscillations => seems OK THEMIS: got the prominence at the southern limb. Instrument planning for Friday, May 5: ------------------------------------------ CDS: Synoptic 00:00 - 06:00 UT Oscillations in filament 08:00 - 10:00 UT (=JOP 95) target: X = -290" Y = -360" JOP 17 Filament 10:00 - 12:00 UT target: X = -290" Y = -340" 12:00 - 14:00 UT target: X = -526" Y = -254" JOP 107 Prominence 14:00 - 15:00 UT target: X = 766" Y = 648" Oscillations in filament 15:00 - 17:00 UT (=JOP 95) target: X = -290" Y = -320" AR loops at the limb 17:00 - 19:00 UT target: X = +1000" Y = -235" Test on JOP 38 19:00 - 21:00 UT target: X = -290", Y = 100" Tornado 21:00 - 24:00 UT target: X = -80" Y = +940" SUMER: Network observation 00:00 - 08:00 UT target: X = -290", Y = 0" Oscillations in filament 08:00 - 10:00 UT (=JOP 95) target: X = -290" Y = -360" JOP 17 Filament 10:00 - 12:00 UT target: X = -290" Y = -340" Oscillations in filament 15:00 - 17:00 UT (=JOP 95) target: X = -290" Y = -320" Filament reference spectra 17:00 - 19:00 UT target: X = -290" Y = -310" Test on JOP 38 19:00 - 21:00 UT target: X = -290", Y = 100" Joint obs. with GALILEO 22:00 - 24:00 UT (until 16:00 on May 6) target: X = -290", Y = -914" X = -290", Y = -1114" X = -290", Y = -1394" General comments: ---------------- SUMER: As suggested in the report sent yesterday, the possibility of a new position of the slit has been discussed again this morning. JOP 122 planned to run during the week-end requires the SUMER slit included in MDI high res. f.o.v. It has been decided to move the slit towards X = -290" between 17:00 and 22:00 UT TODAY (Thursday, May 4). We started to think about plans for the weekend: SUMER/GALILEO, JOP 122, and JOP 118 are planned. More details in the report that will be sent tomorrow.