SOHO daily planning meeting 1997 January 14 Chaired by: R. Doney, P. Brekke (cold and all) FOT report ---------- S/C nominal; S/C anomalies: 1997/01/13 21:54 UT - DMA failure (CDS) 1997/01/14 01:07 UT - DMA failure (SVM HK3) Accomplished activities: RSL, VIRGO, 3 CELIAS loads Planned activities: Momentum management (completed)/station keeping maneuver; VIRGO, SWAN loads (latter at ~ 21:45 UT) Ground system anomalies: 013/1450 - 40 minutes late for AOS: D24 antenna IIP down: no commanding for 40 m. Telemetry was recovered from SSR thanks to emergency support from another antenna 014/0647 UT, POCC string crash 014/1006 UT, POCC string crash Sun --- Meudon H-alpha, EIT 304 show filaments on disk, prominence on W limb, AR W of CM. LASCO C2 images have been showing continuous activity on E limb. Instrument status ----------------- MDI - nominal CDS - nominal, door closed SUMER - nominal, door closed UVCS - nominal, door closed LASCO - nominal, door closed, performing C1 Fabry-Perot tests and discovering features in onboard software EIT - nominal, obtaining full-resolution, full-field (fffr) synoptic images between LASCO tests. If tests finish in time, will be able to support emerging flux campaign tomorrow starting at 19:00 UT GOLF - nominal, observing continues unaffected by manuevers Update on magnetic cloud event of 1997 January 10 (B. Thompson) --------------------------------------------------------------- Shock passed SOHO, WIND at ~ 00:00 UT on 1997 January 10; one hour later, it reached the magnetopause, where the initial, diffuse auroral brightening was followed, as expected from the initially southward magnetic field increase at L1, by dayside reconnection and enhanced auroral brightness observed by POLAR. GEOTAIL was evidently on the Sunward side of the earth at the time, and may have been sampling the magnetopause at the time. Details of this and other ISTP collaborative magnetic cloud studies can be found on the Web at the ISTP workshop Web site set up by Barbara at: http://umbra.nascom.nasa.gov/istp/