Notes for daily meeting, 8/26/96 Taken by: MDI (CED) ANNOUNCEMENTS: Piet Martens reminded everyone of the Beach party on Wednesday, explained in another mail message S/C STATUS: Spacecraft Status: nominal. RSL upload yesterday. GROUND ANOMALIES: 237/1440 - Late AOS due to D27 antenna failure (52 minutes of NRT were lost) VC-2, VC-4 data were delayed. No data was lost. DSN: 14:30 - 15:00: pause for RSL load; 0700 - 0250 LONG pass today! Scheduling: (Ted Tarbell talks) "My job is to persuade everyone to do as much coordinated observing with La Palma as possible, consistent with the other programs that are going on. Bad weather on La Palma the last couple of days. Tomorrow (or later today) I'll have some La Palma images to show. "The best observing in La Palma is 0800 - 1200. The MDI blocks are not complete. In fact, we're going to observe throughout the whole DSN contact -- so there will only be very short gaps throughout the night. That's true of all the gaps this week. "We'll have a continuous run of quiet Sun at disk center Tuesday Wednesday Thursday, then pick up the active region on Thursday." INSTRUMENT STATUS CDS - nominal. Took some measurements of the east limb with the active region coming around. Also viewing the coronal hole that's opened up in front of the active region. SUMER - nominal. Studying coronal holes. Entering Detector B test phase. Calibration and reference spectrum with Detector A for now; after the switch, it'll be repeated with Detector B. Starting on the 27th around midnight, reference spectrum on the north coronal hole, then on a prominence, and then on the equatorial "hole". Klaus received a note from Lindau -- re Sun Grazing comet headed for Sun. "I heard that there's a sun-grazing comet heading towards the Sun now." (Klaus will follow through) UVCS - Studies seem to be running OK. LASCO - nominal. Running synoptic program. Corona was quiet over the weekend, no major disturbances. EIT - nominal. Ran JOP 1 over the weekend; sorry La Palma couldn't be there. We're seeing the filament channel/hole in the high res field of view for MDI. There's a full res movie on the monitor at the end of the room, showing the evolution of the loop structures for anyone who's interested. MDI - nominal. THE SUN TODAY What *is* that thing, anyway? The coronal hole / filament still seems to be extending south. Some debate ensued as to whether it's a coronal hole or a filament. [Until someone positively identifies it, I've decided to call it the "Equatorial Dark Zone(tm)". --CED] There's an active region on the lower left portion of the Sun -- huge but not very active. Another magnetic region is shaping up into perhaps a mini active region at mid southern latitudes, close to the central meridian. PLANNING FOR THE NEXT COUPLE OF DAYS JOP 44: Continues as planned for week 3 out of 4 weeks. This week, N & S coronal holes over weekend, West streamer today, East Streamer tomorrow, Full Sun Wed, West Streamer & NW Boundary Thursday, and East Streamer and NE Boundary on Friday. JOP17 test- Dynamics of Active Regions: Will run Tuesday (there's an option to observe filaments in case there is no active region.) JOP37 test: explained last week. (another Active Region target) JOP48: Will run Friday on the North coronal hole, or on the Equatorial Dark Zone(tm) if that continues to develop. (The equatorial coronal "hole" is at disk center today. Giulio wil show plume images tomorrow (afternoon)) TODAY: MDI, CDS, and EIT all looked at the Equatorial Dark Zone(tm) today, at higher cadence than normal, to try an characterize this interesting bit of zoology.