SOHO Daily Meeting Notes Meeting chaired by Piet Martens 20 July 1996 (DOY 216) Notes by Julia Saba/MDI --------------------------------------------------------------------------- Announcements: None ------------- FOT Report (by Bret Snapper): ---------- o Spacecraft nominal o Anomalies: none o Actvities done: Roll steering law, and VIRGO and SWAN loads uplinked o Activities planned: Roll steering law, and VIRGO and SWAN loads o Ground system anomalies: - 215/1408: 3 min TLM outage from D24. Data received from D27. - Three problems with JPL Special Function Generator (SPG): 215/1428: 12 min TLM outage from D24. Data recoverable. 215/1455: 10 min TLM outage from D27. Data recoverable. 215/1507: 3 min TLM outage from D27. Data recoverable. - 215/211030-211148 & 211745-211905: 2.5 min TLM outage due to JPL maintenance. Data recoverable. - 215/2229: TCBLOCK sequence errors due to command shift register errors at station. 15 min NRT delay. Coordinated Operations: None planned today or tomorrow. ---------------------- Instrument status/plans: ----------------------- o CDS nominal. - Chris Haskell reported playback data with wrong date stamps for at least one file each day for the last few days. There were no bad time stamps in the real time data. Chris discussed the problem with Eliane Larduinat yesterday. There is no resolution to the problem yet. No other instrument team has reported the problem. o MDI nominal. - Running a helioseismology mode over the weekend. - Initially thought instrument would be running wrong MDI campaign today, but the problem was apparent rather than real, with the wrong campaign pointer showing up in the telemetry. This should be fixed with the new software upload on Tuesday. - Jake Wolfson points out that, 8 months after launch, MDI has taken over 5M images, in excellent focus, with no bad CCD pixels, and the instrument is functioning extremely well. o UVCS nominal. o EIT nominal. About to start N. Polar plume study. The bakeout to get rid of the long-exposure-induced "feature" near the SE limb was postponed due to scheduling. It is now planned for Monday night. o LASCO nominal. Solar conditions: ---------------- o The images examined included the EIT HeII 304 image, which showed a polar crown filament poking up over the NW limb. This prominence has been impressive for several days. The large active region in the southern hemisphere, seen in the MDI full-disk magnetogram and in EIT coronal images, is now about a day past central meridian. o Joe Gurman pointed out that the MDI continuum or line-depth images, which don't show up currently in the planning data, are very useful for planning. Meetings: -------- No daily meeting tomorrow. Meeting on Monday at 10:00 EDT. AOB: --- The MDI rep asked the FOT for timely information on the 7-hour commanding test next Thursday evening (about 2100 - 0400 UT), so the required files can be prepared in advance and the Background Queue files transferred over at a convenient time (must be outside of contact time. 30-min blocks of Background Queue and NRT commands will be requested. The FOT will give MDI the desired script early next week.