6 Nov Daily Meeting Minutes --------------------------- Announcments ------------ Weekly Meeting at the EOF tomorrow at 10 am. Large solar event (see solar status below..) FOT Report ----------- Spacecraft Status: Nominal Spacecraft Anomalies: None Accomplished Activities: RSL,VIRGO Planned Activities: RSL,VIRGO,NOM HGA Upcoming Operations: 12/1/97 TR Maintenance/CDMU & ACU Memory Dumps (6 hrs SVM Reserved) Ground Anomalies: 309/1253 Event Logger on Backup String Halts 309/1240 1.5 Min Late AOS D66 Antenna Late going to Point 309/1247 3 Min Commanding Delay D66 CPA Failure 309/1708 4 Sets of Commanding Anomalies D27 Several Pauses in NRT during pass 309/1708 Backup String Unable to Open S/W Anomaly Text File 309/1911 1 Min TM Dropout D27 Switch from Little Pipe to Big Pipe. Recoverable 309/1937 1 Min TM Dropout D27 SFG Hit. Recoverable 310/0244 11 Min TM Dropout D46 Message Switcher Down. Recoverable 310/0328 RCVR 2 Lost Lock on uplink for 5 Min D46 Reason Unknown 310/1024 No command capability; D66 equipment problem (4 hrs, 14 min) 310/1130 No command capability; D61 equipment problem (D66 covered, D/L only until 1438) Solar Status / Info from EOF ---------------------------- Large CME and X8 class flare off the West limb A wide (~100 degree) CME appears off the West limb of the Sun at an altitude of 4 Rsun at 12:10 UT today (06Nov1997). An estimate of the speed based on several C2 and C3 images yields 1,565 km/s. Scott Paswaters has prepared some images/movies and placed them in the usual ftp site: ftp://lasco-www.nrl.navy.mil/pub/lasco/cme/971106/ Report from MEDOC: ------------------ * Review of the data and events of the past day(s): --------------------------------------------------- UVCS : ---- Observations the 3th of November in Ly alpha and O VI (1032 A) very well show the interface between a streamer and a coronal hole, extending from 1.5 to 2.5 solar radii approximately. JOP067 observations have been made on the 4th of November between 15:30 and 23:48. SUMER : ----- Nov. 4 GIP-cool loops: bright points appeared, leading to some tens counts/s/px on the detector. This is acceptable, but is a limit. For the Transition Region JOP (campaign 3035), the pointing was hard-coded, so it could not be changed. Valentina Zharkhova's electron beam programs have been run. Two sets of data were obtained : Lyman continuum with Ly 9 and Ly 7 for the 1st one, and the wings of Ly beta for the second one. These programs need a high time resolution andthe exposure time is only 2s. It would be interesting to catch Bright Points. JOP 9 : at least 2 bright threads have been observed in the prominence. EIT : --- Two movies, at 171 and 195 have been made. The lines ratio, when achieved, will give temperature maps. Some data are missing. Two very active regions are producing small CMEs. CDS : --- GIP-cool loops: It was coordinated with SUMER (N II, O IV and Mg VIII, with exposure time of 100 s, which could allow to transmit a whole detector image instead of a few lines only). SUMER observations show quite symetrical wings. Various lines, using CDS NIS raster (from 520.57 A to 629.73 A) have been observed, showing the loop rising from the limb. It would be interesting to surimpose an EIT zoom on the region. JOP 9 : the new version fills the gaps in wavelength of previous observations. * Today's observations : -------------------- EIT will continue the CME watch in switching 171 and 195. SUMER and CDS will continue the electron beam programs, then run a filament program, then a bright point program (with NRT pointing). UVCS will observe streamers at the equator. * Tomorrow's observations : -------------------------- UVCS will observe streamers at PA = 250 (see below) EIT will run again CME watch and support JOP 66-type studies. SUMER and CDS will study the Boundary Abundance on a Coronal Hole (BACH program). The goal is to look beyond the limb, inside and outside a coronal hole to discriminate the origin of observed anomalies. SUMER low FIP observations : Si VIII (1445/1440 A) 10^7 - 10^9 cm^-3 S X (1213/1196 A) 10^8 - 10^10 cn^-3 SUMER high FIP observations : Mg IX (780/770 A) CDS observations : Si, Ca and Mg The duration of the program will be 23 h for SUMER and approx. 16 h for CDS. The EIT JOP-66-type support will be appreciated. The pointing will be at the NW boundary of the north polar coronal hole (exact pointing TBD), with 2 regions separated by 3 arcmin. SUMER will put the lower end of the slit 30 arcsec above the limb in order not to intercept the limb. It is suggested to observe the same line (Mg X ) with both CDS and SUMER to be sure of the pointing. UVCS suggests to change their pointing in order to catch the same region. PA = 285 has been adopted. BACH program could be re-run during the week-end. Next meeting : tomorrow, at 10:30 JA & JCV