Notes from SOHO Daily Meeting, 28 October 1996 Chair: Bobby Doney, SOL: Simon Plunkett, Notes: Julia Saba/MDI Announcements: ------------- - Piet Martens will hold a meeting on the catalogue of coordinated observations, today at 3 pm EST in the SoHO conference rooom in Bldg 3. FOT Report (by Nick Piston): ---------- - Spacecraft status: nominal - Anomalies: none. - Accomplished activities: Roll Steering Law (RSL) and VIRGO loads SWAN delayed command per OCD - Planned activities: RSL, VIRGO, and SWAN loads. - Ground System anomalies: DOY 300/1730 UT: CMS locked up - 37 min NRT commanding lost DOY 300/1816 UT: POCC string crashed - 9 min NRT commanding lost. Schedule: -------- No changes. Note handover at noon local. Note local time (EST) now = UT time - 5 hours. Collaborations: -------------- - JOP 3 (SOHO campaign # 585) is running this week. This is a multidisciplinary approach to study the onset of coronal mass ejections (CMEs), using large fields of view and a large temperature range, to clarify the properties of source magnetic structures and the plasma within these structures, and the precise sequence of events leading to a CME. JOP 3 is part of an IACG campaign on CMEs, which also involves Yohkoh, WIND, GOES, GRO, and ground-based facilities. The JOP 3 target will be chosen by the JOP 3 representative at the SOHO EOF, Viggo Hansteen (viggoh@cdsa4.nascom.nasa.gov). Currently it is the large filament in the SW approaching the limb. - An X-ray Bright Point (XBP) Campaign (SOHO campaign #630), organized by Karen Harvey (kharvey@noao.edu), is also running all week. The campaign involves MDI, SUMER, CDS, and EIT on SOHO, as well as Yohkoh SXT, BBSO, MSO, CSUN, and Mauna Loa, SOONSPOT, and Kitt Peak. Yesterday the XBP target field was centered at N03E00. For the next couple of days at least, the XBP target will follow the JOP 3 target. Seeing was poor at Kitt Peak yesterday. A storm front may make it poor again today, although they will try to observe. The hope is for better observing later in the week. - A campaign to make Prominence Magnetic Field Measurements (SOHO campaign #710), involving Sac Peak and CDS, runs through Wednesday from 14:00 - 17:00 UT. The Sac Peak coordinator is Bruce Lites; the EOF CDS coordinator is Dominic Zarro. The campaign target over the weekend was a prominence at the SE limb. The target will switch to the JOP 3 target, and the prominence in the SW. - A test for the SERTS (Solar EUV Rocket Telescope and Spectrograph) launch is scheduled for tomorrow, 29 October, at 1700-2000 UT. Roger Thomas will look at solar images via the SOHO planning tool, from White Sands today, and choose a target for tomorrow's test by 3 pm EST today. The SERTS launch is scheduled for 13 November, with a backup day of 14 November. Solar conditions: ---------------- In addition to the SE and SW prominences seen, e.g., in the Nobeyama image, there is a large filament in the SW, approaching the limb, which shows up well in the Meudon image from Saturday. EIT images from late yesterday and early today show the large, decaying active region in the SW, approaching the limb. Behind it (eastward), the bipolar region is growing. This bipolar region shows up well in the MDI full-disk magnetogram. LASCO C2 images show an equatorial streamer in the East, a streamer above the active region in the west, and activity in the NW streamer, where a CME is going off. Instrument status: ----------------- CDS: nominal. They have had a small problem with the GIS slit motor. Today, any GIS studies involving slit movements will be done only during NRT when it can be monitored. - Over the weekend, supported the Lites prominence study and the XBP study, and studied a small active region. Today will start JOP 3 support at 1600 UT. The JOP 3 pointing will be centered on 812"W, -419"S (heliographic coordinates) with a FOV of roughly 240"x240". This covers the central portion of the filament, which as seen in He II 304 (SOHO EIT) is fairly long. SUMER: nominal. Over the weekend, supported several studies of visiting planner Tom Ayres, and made turbulence studies in Ne VIII, O VI, and Mg X. Today will do a stray light study. Cannot support XBP or JOP 3 studies because of target selection near SW limb. UVCS: nominal. Interrupting flat field of O VI detector to support JOP 3 with 3-day program for today through Wednesday. EIT: nominal. Over the weekend, supported B. Lites prominence campaign and K. Harvey XBP campaign. Today and tomorrow, will support JOP 3 and XBP campaign. LASCO: nominal. Over the weekend, relaxed the cadence of some synoptic images to insert some higher time resolution studies of the SW prominence. Ran Fe X, Fe XIV Doppler sequence mode to look for Doppler motions. This ambitious schedule shifted the LASCO/EIT images by about 2 hours. The shift is reduced to 20 minutes today. LASCO is watching a CME going off in the NW streamer. MDI: nominal. Over the weekend and through today, running high-resolution heliosesimology sequence. Supporting JOP 3 and XBP campaign today though synoptic full-disk magnetograms. Any Other Business: ------------------ - Yohkoh schedule: Yohkoh timeline information is now included on the SOHO planning timeline, thanks to Kim Tolbert. The daylight portion of the orbit is shown in one line and a second line shows the five periods of "visibility", for orbits when the spacecraft passes over Kagoshima Space Center and commanding can be done and real-time data received. - LASP theory seminar conflict: The SOHO planning community was polled to see who would attend the Lab for Astronomy and Solar Physics seminars, currently scheduled at 10 am on Monday 1 mornings, if the time were changed to one which did not conflict with the SOHO morning meeting. Of those attending the SOHO meeting today, only 3 people expressed interest in attending the LASP seminars regularly. - Web address for SOHO planners: It was suggested that email addresses be put on the Web for the planners of the week for the various instruments. (Some instrument teams have already done this.) - SOHO Gallery: Bernhard Fleck reported that there is now a Web page for nice images and movies from all 12 SOHO instruments. The address is http://sohowww.nascom.nasa.gov/gallery. There is also a link from the main SoHO page. This is a good toll for public outreach and education. Please provide more nice images and movies, with captions and background information, as they become available.