SPWG FINAL MINUTES Friday 27 January 2006 1. Boundary conditions - SOHO is up-side down until next roll. The next SK/MM will be on March 7, the next 180 degree roll will be on March 15. The thruster firings and roll are decoupled to have the roll as late as possible, to decrease chances of bad telemetry during the keyhole. For more details, see note under section 3. - Graphical DSN schedule: http://soho.nascom.nasa.gov/soc/dsn/ - All available keyhole information (including March 2006 keyhole) is at http://soho.nascom.nasa.gov/soc/keyholes.html - Except for Major Flare Watches, TRACE will be doing full disk mosaics if/when EIT is not able to do synoptic sets due to keyhole operations. - KNOWN submode dependent activities/submode changes: * TOO JOP153/MMOP003 Future Major Flare Watch (SM5 if SUMER observes target, SM6 otherwise) * TOO JOP175 Extended Filaments at the Limb (see sect. 2a), SM6 * Feb 18-27 JOP175 Extended Filaments at the Limb (see sect. 2a), SM6 * Feb 22-Mar 21 26m Keyhole (Feb 28-16 34m Keyhole), SM5/6 * Feb 28 Submode change to Submode 5, 18:55 UT * Mar 17 Submode change to Submode 6, 18:55 UT * Mar 17-30 JOP175 Extended Filaments at the Limb (see sect. 2a), SM6 ** * Mar 22 Submode change to Submode 5, 19:40 UT * Mar 23-Apr 4 SUMER mini-campaign, SM5 * Mar 29 Solar Eclipse, 08:34-11:48 UT, SM5 * Mar 31/Apr 4 Submode change to Submode 6 * Apr 12,19 EIT Shutterless #23, 18:00-20:40 UT, SM6 * May 27-Jun 14 26m Keyhole (May 31-Jun 11 34m Keyhole), SM5/6 * Jul 26,Aug 2 EIT Shutterless #24, SM6, TBC * Aug 21-Sep 19 26m Keyhole (Aug 28-Sep 13 34m Keyhole), SM5/6 * Oct 18,25 EIT Shutterless #25, SM6, TBC * Nov 1-Dec 15 SUMER Campaign, SM5, TBC * Nov 24-Dec 11 26m Keyhole (Nov 27-Dec 08 34m Keyhole), SM5/6 ** Note that we will be in submode 5 due to the keyhole until March 17 and going back again on March 22 for the SUMER campaign. Some of the default SUMER campaign dates overlap with keyholes - which is not a problem in itself (submode 5 will often be needed for keyholes anyhow) as long as potential periods of no SUMER data between passes can be accepted. SUMER plans a compact campaign at MEDOC starting Mar 23 and ending Apr 4. Will need EOF support during weekend Mar 25-26 for NRT from MEDOC. Ending date could be as early as Mar 31, weekend is contingency. SUMER will make a raster in the EIT FOV during the EIT shutterless #23, segment 1 (April 12). Program will be loaded during the mini-campaign and started either by time-tag or manually (need Chris to press the button), to be decided later. SUMER contact: Maria Madjarska. - EIT Bakeout/Other EIT will bakeout during the March keyhole, dates TBD. - TRACE Eclipse period * Oct 14-Feb 17 TRACE Hard Eclipse Season TRACE loads plans only 3 days a week (Mondays, Wednesdays, Fridays). 2. Priorities for the coming month & more a) Joint observing plans and campaigns Continuing campaigns: * 2002/02/25-- JOP136 Default RHESSI Collaborations (#6850), POC:Stein Haugan * 2002/04/25-- JOP159 CMEs in Lyman-alpha (#6870), SWAN/LASCO/EIT/UVCS, POC: Chris St Cyr, Eric Quemerais * 2003/05/13-- Default CDS Co-observations with TRACE (#6950) * 2003/07/01-- Network-Internetwork Oscillations (#7033), EIT/TRACE, POC: Scott McIntosh * 2004/02/19-- JOP175 Extended Filaments at the Limb (#7135), EIT/TRACE/LASCO/UVCS, POC: Chris St Cyr (Chris.StCyr@nasa.gov) * 2005/09/20-- JOP153/MMOP003 Future Major Flare Watch (#8006) Campaign #6850 is for "individual instrument studies" selecting an AR target [partially] influenced by the Max Millennium target selection to maximise chances of serendipitous co-observations. EIT supports all with half/full-res 195 Å CME watch in submode 5/6, except JOP175 getting half/full-res 304 Å CME watch in submode 5/6, and Network-Internetwork Oscillations which is TBD by Scott McIntosh. As long as the S/C is in submode 6, all EIT CME watch will be in full res. Major Flare Watches will be in full-res even if it requires a submode change, unless the target is observed by SUMER. JOP175 is listed as a top-priority TOO for February 18-27 and March 17-30. UVCS will participate during all of the first period, and during March 17-26. * Jan 31 Sounding Rocket Launch, MOSES/CDS/EIT/MDI/TRACE, 17:49 UT, POC: Charles Kankelborg (email@example.com) Sounding Rocket Launch, EUNIS/EIT/CDS/TRACE/VLA, 18:19 UT POC: Jeffrey.W.Brosius.firstname.lastname@example.org February 2 or 3 is the (unofficial) backup launch day with times of 17:54 UT and 18:24 UT. The launch range does not commit the date until after the primary launch date. We have 2 DSN stations between 16:50-21:10 on Jan 31, we will ask the FOT to delay the dump to allow MDI high rate data for the rocket support. We now also have double downlink stations for the same time interval for February 2. MDI: Jeff has expressed interest in getting more MDI Continuum images than just the 96 minute images. I think an acceptable compromise is to run p30c_fd_m1 during the flights to get 1 minute cadence Continuum images along with Magnetograms. MDI will run that different campaign as long as there are no objections. MDI realizes that SOHO may have to be in record for any flights that are postponed until Feb 01 or after. CDS plans have been worked out. EIT's (non-shutterless) plan is to use full-field, full-res (fffr) synoptic sets at the following timings for the rocket supports: 17:30 UT fffr 171 image 17:36 UT fffr 284 image 17:43 UT fffr 195 image 17:49 UT fffr 304 image 18:00 UT fffr 171 image 18:06 UT fffr 284 image 18:13 UT fffr 195 image 18:19 UT fffr 304 image 18:30 UT fffr 171 image 18:36 UT fffr 284 image 18:43 UT fffr 195 image 18:49 UT fffr 304 image * Feb 3-6 MDI Continuous Contact The plan is full disk Magnetograms/Dopplergrams (in best focus for full disk mode). * Feb 13-17 TRACE Annealing * Feb 18-27 JOP175 (#7135), Priority TOO, EIT/LASCO/TRACE/UVCS * Feb 22-Mar 21 26m Keyhole (Feb 28-16 34m Keyhole) * Mar 17-30 JOP175 (#7135), Priority TOO, EIT/LASCO/TRACE/UVCS We stay in submode 5 until March 17 due to the keyhole, and go back to submode 5 on March 22 due to the SUMER mini-campaign. EIT support with full-res 304 CME Watch is only possible in submode 6. UVCS will participate March 17-26. * Mar 22-May 21 MDI 60-day Continuous Contact Full disk Magnetograms/Dopplergrams. * Mar 23-Apr 4 SUMER mini-campaign See also section 1 for details: - detector health check - plume observations - Jop 002 - AR loops (off limb) SUMER contact will be Udo Schuehle/Klaus Wilhelm. * Mar 29 Solar Eclipse, 08:34-11:48 UT, SUMER/UVCS/TRACE/CDS(TBC), POC: Alan Gabriel (email@example.com) Solar Eclipse, 10:40 UT, EIT/TRACE/LASCO, POC: Serge Koutchmy (firstname.lastname@example.org) Solar Eclipse, 10:53-11 UT, TRACE/EIT, POC: Jay.M.Pasachoff@williams.edu SUMER has been requested to support ground based observations during this eclipse, so we will be in submode 5 around this date - from about March 23-April 4. The observations will be along the lines of JOP002, but suggestions about a roll have been withdrawn, so an updated (actually, new!) JOP description should be drawn up. For eclipse details, see: http://sunearth.gsfc.nasa.gov/eclipse/SEmono/TSE2006/TSE2006.html CDS support for Alan Gabriel's request is under consideration. UVCS will participate for Mar. 27-31. Serge Koutchmy sent an email on 16 November with requested observations from TRACE, EIT, LASCO for the eclipse: One 304 image at 10:40 UT +/- 2 min, and one 195 image as close as possible to that, either before or after. Routine images taken hours before and after will also be useful. LASCO images (near-simultaneous, within +/- 10 min, and hours before/after) are also needed. EIT has been asked by Jay Pasachoff for a synoptic set around 11:00 UT, as well as as frequent as possible synoptic sets (usual cadence) +/-1 day around the time of eclipse, as provided in the past. While they're enthusiastic about the science that SUMER will be doing during the eclipse, they have some concern that EIT and LASCO may not have enough bandwidth in submode 5 to meet the requests rigth around the time(s) of totality. Kevin probably needs to make up a plan before we can feel comfortable. MDI wonders if we will be in record for the eclipse? SOC note: So far, nobody has requested it, and it would mean poking a hole in the MDI 60-day continuous contact. It's a unique event, but nobody has so far made a convincing argument that a "typical" (i.e. small) dropout of data would ruin the entire observing sequence or compromise a wider science goal (as is the case with e.g. calibration flights). Data recovery is above 99% on average. * Apr 12,19 EIT Shutterless #23, 18:00-20:40 UT SUMER plans to observe on April 12, with buffered observations in submode 6. CDS will participate. TRACE will very likely participate. MDI will support Shutterless #23 with Full Disk Magnetograms and Dopplergrams along with 96 minute synoptic Magnetograms and Continuum images. * May 27-Jun 14 26m Keyhole (May 31-Jun 11 34m Keyhole) b) Intercalibration activities Last Intercal 1: January 4 * Feb 01 ICAL01 (#7113), CDS/EIT * Week 8 ICAL01 (#7113), CDS/EIT c) Individual instrument plans MDI: See section 2a for MDI continuous contact periods. MDI may reduce the ALT cadence during Keyholes to be less than 15 ALT magnetograms per day if the lack of high rate telemetry is such that we will lose all or almost all of the 15 ALT Magnetograms each day. The ALT cadence will be decided on an individual Keyhole basis and even a daily basis during each Keyhole depending on the 70m antenna availability at the time. All requests for MDI support need to be made several months ahead of time and sent to email@example.com. Even outside keyholes, MDI can only do 1-minute cadence observations when we have contact and there is no recorder dump in progress. MDI's REQUEST page is at http://mdisas.nascom.nasa.gov/coordination.txt NOTE: Listing of a study on that page means *only* that a request has been received, not that it will necessarily be supported. A description of MDI Observing Modes most used for JOPs and campaigns (FD vs. HR) can be found at http://mdisas.nascom.nasa.gov/Collaborate. Anyone requesting MDI observations is encouraged to read this page in order to have a better idea of what observing modes would be best suited for a particular study. More detailed information about how MDI operates, observational constraints and telemetry information can be found at http://mdisas.nascom.nasa.gov/MDI_Collaboration_Details. MDI is back in best focus for Full Disk observing. UVCS: We have been using the LyA detector for some observations and will keep planning so when appropriate. For weekly plans, see the SOHO calendar and the UVCS planning page: http://cfa-www.harvard.edu/uvcs/observations/obst.html The following are listed because of NRT requirements or as candidates for collaboration (with e.g. CDS): * Jan 11-Jan 29 UVCS South Polar Coronal Hole Study * Jan 30-Feb 09 UVCS Streamer Study * Feb 10-15 UVCS Suprathermal Seed Particle Population * Feb 16-17 UVCS Observations of 38 Aqr CDS: See their request diary for details: http://solar.bnsc.rl.ac.uk/scientificops/request.shtml A re-calibration of GIS (filament and raw data dumps) is under consideration. LASCO/EIT: SUMER: SUMER plans a compact campaign starting Mar 23 and ending Apr 4. Ending date could be as early as Mar 31, weekend is contingency. Needs confirmation by IAS. TRACE: The outcome of the Senior Review of all Sun-Solar System missions in the fall of 2005 will determine the level of support (or no support) for each mission in the future. TRACE operations will continue through at least the fall of 2006. The NASA response to the Senior Review panel recommendations for operations beyond that are expected to be released by February 2006. The outcome of the Senior Review of all Sun-Solar System missions this fall will determine the level of support (or no support) for each mission in the future. TRACE operations will continue through at least the rest of the year. NOTE that TRACE in general reserves the right to withdraw support from agreed, existing collaborations if a sufficiently "good active region" is called by the Max Millennium group. The TRACE eclipse season is expected to end February 17. TRACE will load plans 3 times a week (Mondays, Wednesdays, Fridays). 3. AOB * Next SPWG: F Feb 24 SPWG after Daily/Weekly Meetings * For discussion during the meeting: We have gotten mixed feedback regarding the new meeting format. Some like it, others don't. Most importantly, teams with widely spread teams like the old format b/c of the simplicity of forwarding a draft response for proofing. Most likely we will do something that will suit everyone quite well: We will provide the old style emails with "request-for-comment" lines in addition to the highlighted differences from last final minutes; people can respond in whatever form they like - with or without including the whole text from the email. To simplify the work of putting in/taking out the request-for-comment lines, they will stay in the minutes (also on the web) until the calendar item expires. It has also been suggested to eliminate the monthly meetings entirely and do it all over email, sending out the final version whenever all responses are in. The arguments are that there is little added value in "getting together just to have the responses read to us", and eliminating the meeting would give everyone more time without a stressful time crunch. At the meeting, Stein argued as follows: There is a need to keep deadlines for responses roughly as they are - things keep changing so the comments must be collected over a confined period of time, or else they get outdated. Although it is superfluous in theory to go over the changes (cursorily) at the meeting - they should all be clearly visible on the web page - there is some added value in case people have not had time to look over the changes, because relevant questions may become apparent. Stein suggested an alternate solution: to have the deadlines for responses as they are now (Thursday afternoon), but let people have all Friday to read them and come up with any questions. The questions (if any!) would then be raised as an AOB at the daily meeting the following Monday. However, it would be nice to stick with the current arrangement until Tero Siili (Stein's replacement has had a chance to form an opinion). The rest are FYI items: * Why decouple the SK/MM and the roll? The LGA stick antenna we use during the 34m keyhole does not beam the signal uniformly. In particular during the "long" keyholes (spring and fall), the small difference due to the up/down orientation of SOHO is enough to cause a difference in the downlink quality, with the quality always being worse *after* the roll because it then points in a less favourable direction. So, we want the roll to be as late as possible, but before the transponder swap back to the HGA (the HGA orientation is of course why we need to do the roll in the first place). For the SK/MM it is desirable to have a fairly long set of passes to accommodate the "maneuver prep", manoevres, and "maneuver end" activities in one go. In addition, the burns themselves should be performed on a single station (not a D/L + U/L combination) so ranging can be done to assess the actual delta-v along the line of sight. For the roll, the preparation+roll+cleanup takes much less time and there's no need for ranging, so almost any decent pass will be sufficient. If the two different sets of criteria ("long pass[es] with ranging in the middle" vs "almost any decent pass right before the transponder swap") cannot be fulfilled on a single day, we're likely to split the two operations. (Note - only MDI needs any safing before a roll, so not much time is wasted by splitting it up). This whole thing became clear some time before the previous keyhole - but that keyhole was a short one (i.e. better signal-to-noise ratio in the first place), plus the natural SK/MM placement was fairly close to the transponder swap going out of the keyhole. * If anyone has projects that require high rate (i.e. 1 minute cadence) MDI support, now is a good time to ask! If you need MDI data, make sure you request it specifically. There is no significant change in the shutter performance over the last 10 months; monitoring continues, but no immediate changes in operations are planned. * DSN support should be requested at least 6 months in advance. Keep this in mind for: ground-based collaborations that require MDI support, stellar/shutterless observations that require NRT, etc.