WEEKLY MEETING MINUTES November 24-30 1. Announcements ----------------- * For people that forget which telemetry submode gives instruments certain telemetry allocations, a table has been added to the operations page which gives telemetry allocations of CDS, LASCO/EIT, and SUMER in the different submode configurations. (It actually has been on the WWW for about a week but with all the activity has not been a priority to announce). From the main homepage, click on "Operations", then under the "Resources" click on "Telemetry Subformat Definitions". (http://sohowww/~soc/submode.html) MDI commented that it may be helpful to also have an explanation there for the differing MDI telemetry rates. Laura Allen will update this later. If anyone has additional suggestions, send comments to her. * No daily meeting will be held on Thanksgiving Day. 2. Operations Constraints ------------------------- The November 29 maneuver timeline has been changed, in addition more changes will occur since MDI jitter test has been waived. We will try and present a new timeline on Monday morning (Tuesday morning the latest). Again with all the ESR activity, people probably haven't thought about the upcoming maneuver. We need to think about: - In which NRT periods people will safe their instruments ? - Which submode should be in during the manuevers and the hours that follow (when CDS, SUMER, and LASCO doors are both closed and EIT is baking out) ? DSN schedule: ------------ DSN ends early on Monday and Tuesday night. End of NRT on both nights is ~ 7:20 pm local time. Plan accordingly. Submode Switches: ----------------- Switch back to Submode #3 at 16:00 UT on Monday, November 24. Switch has to occur prior to 16:30 UT for JOP070 support. To ease management of the SSR, submode switch will occur after the station handover to DSS-27, then we will resume the SSR dump and NRT. 3. Coordinated Observations ---------------------------- The following coordinated observations are planned: M Nov 24 (W48) Switch to Submode #3 at 16:00 UT JOP070 (#3070) -- CDS/EIT/KPNO (M. Penn): 16:30-23:30 UT T Nov 25 JOP070 (#3070) -- CDS/EIT/KPNO (M. Penn): 16:30-23:30 UT delta Sco observations -- UVCS W Nov 26 JOP070 (#3070) -- CDS/EIT/KPNO (M. Penn): 16:30-23:30 UT T Nov 27 Thanksgiving JOP070 (#3070) -- CDS/EIT/KPNO (M. Penn): 16:30-23:30 UT F Nov 28 JOP070 (#3070) -- CDS/KPNO (M. Penn): 16:30-23:30 UT EIT Pre-Bake Out Calibrations and Bake Out S Nov 29 SVM Activities: Reaction Wheel 4 Maintenance, Momentum Management, Station Keeping EIT Bake Out S Nov 30 EIT Bake Out Other Activities for Week 48: * JOP073 Blinkers (#3075)- CDS/MDI/EIT (Richard Harrison) * Target of Opportunity: JOP018 (#3055) Sunspot Studies (O. Wikstol, P. Brekke) Submodes: Monday 00:00 UT -- Monday at 16:00 UT --> Submode #6 Monday 16:00 UT -- Sunday at 24:00 UT --> Submode #3 Planners for Week 48: SOL - Oivind Wikstol CDS - Oivind Wikstol SUMER - No Science TM/No Planner UVCS - Xing Li EIT - Barbara Thompson MDI - Craig DeForest LASCO - Doug Biesecker/Ops team Relevant notes (somewhat sketchy this week..): - Discussion concerning JOP070. Monday and Tuesday target is disk center. - LASCO will be observing CME's in C1 and C2, have only seen one CME in H-alpha. - UVCS may want some LASCO C2 support for streamer observations next week. Will be observing delta Sco next Tuesday. A.O.B. ------- Included for completeness are some more comments concerning ESR activities that were submitted by remote instrument teams that were accidently left out of the daily meeting minutes (although most were discussed at daily meeting): FROM GOLF: ---------- GOLF -- remained in observation during the whole 19-20 November troubles and thanks to our own on-board storage of data during 16 hours before re-introduction into telemetry were able to collect most of the experiment vital data. We observe that the detectors signal is affected by very strong variations, going all the way down to dark current or close to it during short periods of time. As we have several time experimented large rolls are unable to explain these variations. Could you kindly confirm we SOHO had pitch and/or yaw excursions larger than a few degrees, does somebody have a rough idea of the movements we experimented (they were probably fast enough to have nearly no impact on the instrument overall thermal equilibrium ? ANSWER FROM Jean-Philippe Olive: Plots were produced which show pitch and yaw excursions of +/- 2 degrees (2 degrees in positive and the negative directions) once the FDE (Failure Detection Electronics) took over. Similar to last time there was an ESR in the beginning of the mission. COMMENTS FROM CELIAS (STOF, CTOF and MTOF were operational throughout..) Fred Ipavich has been looking at the MTOF temperatures, and he noticed a short period after the ESR when there was a decrease by about 1 degree, followed by an increase by one degree (over nominal) and then a return to nominal. Fred spectulates that this may actually be a reaction to the change in the solar aspect angle.