SOHO Daily Meeting Minutes for Thursday, 30 Dec. 1999 Chaired by: J. Hollis (SOC) DOY: 364 ANNOUNCEMENTS ------------- * TODAY PMI WILL BE PERFORMING CORRECTIVE MAINTENANCE ON BUILDING 3 UPS-20 ON FROM 8:00 AM UNTIL 4:00 PM. THE UPS UNIT WILL REMAIN ONLINE FOR THIS ACTIVITY. ESCORTS WILL BE PROVIDED BY MSOCC MAINTENANCE PERSONNEL. NO IMPACT TO OPERATIONS IS EXPECTED. 3-UPS-20 supports SOHO, ACE, W/P, and XTE missions. FOT REPORT ---------- Spacecraft Status: Nominal UVCS safed for Y2K. Spacecraft Anomalies: 0344 UTTHTRAP and UTTHBAY3 violated red low limits. Accomplished Activities: VIRGO, CELIAS, Y2K Preparation (UVCS safing) Planned Activities: VIRGO, HGA Upcoming Operations: None Ground Anomalies: 364/0358 Degraded TLM from D46 due to a high rate lan problem. Degraded TLM from 0358 to 0528, recoverable from the CDR. 364/0627 Loss of uplink, reason unknown. Loss of CMD ability from 0627 to 0636. Lost ~30 sec. of TLM, non-recoverable. Other: None SOLAR STATUS ------------ 12/29 DOY 363 - 12/30 DOY 364 EIT daily On-Line Solar Status and observations: http://umbra.nascom.nasa.gov/eit/plan/log_form19991230.html INSTRUMENT STATUS ----------------- CDS: Nominal. Will finish on AR 8810 early Saturday. Then, may switch to coronal hole target. UVCS: Safed for Y2K until January 3. LASCO: Nominal. C2 and C3 synoptics while CME Watching. EIT: Nominal. Full resolution 195A images at 12 minutes. MDI: Nominal. Full disk Magnetograms and Dopplergrams. TRACE: First, continue following AR 8809/10, then CM synoptic and calibrations (white light & 171 flats, focus mechanism, guide telescope), then a few hours of 171 and C IV triplets on the AR with full FOV, then repeat the flat fields, then 8 hours on the leading edge of the equatorial coronal hole boundary. The CH observations take all 3 EUV images with best quality compression and full FOV; the pointing is the eastern boundary of the hole as far as possible from any AR's, to get the longest possible exposure times. AOB: News from Flare Genesis (David Rust): Although the stratospheric winds would seem now to support a circumpolar flight (according to satellite wind observations and the trajectory of a pathfinder balloon), the surface winds are too high and will probably remain so through January 1. We will launch as soon as possible after that. The best prospect for a target region is the one now coming over the east limb at N10. Reports of activity in this region would be much appreciated. For more information see Flare Genesis Experiment web site at: http://sd-www.jhuapl.edu/FlareGenesis/