FINAL MINUTES FOR SOHO 20070427 SPWG MEETING
1. Boundary conditions
a) Orbit, attitude and manoeuvres - SOHO is in normal roll (0 deg) position - manoeuvres May 29 roll, stationkeeping and momentum management (timing TBC) Aug 28 stationkeeping and momentum management Aug 30 or 31 roll (timing TBC) b) Communications with the spacecraft Graphical DSN schedule: http://soho.nascom.nasa.gov/soc/dsn/ * May 18-Jun 5 26 m keyhole * May 22-May 31 34 m keyhole * Aug 11-Sep 9 26 m keyhole * Aug 19-Sep 2 34 m keyhole - The need and approach to reduce FOT manpower requirements needed for complex operations during the keyhole remains in effect until further notice. All available keyhole information is at http://soho.nascom.nasa.gov/soc/keyholes.html c) KNOWN submode dependent activities/submode changes: * TOO JOP153/MMOP003 Future Major Flare Watch (SM5 if SUMER observes target, SM6 otherwise) * May 4-17 SOHO/STEREO Campaign, EIT/MDI/STEREO-EUVI * May 9,16 EIT Shutterless #27, TBC - 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. - 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. d) Instrument maintenance activities EIT bakeout periods will be during keyholes. Dates and times are defined when the DSN schedules become available. e) Others TRACE will have a summer eclipse season from about 12 May - 16 Jul (dates are TBC). Hinode eclipse season 7 May - 10 Aug.
2. Priorities for the coming month and more
a) Joint observing plans and campaigns Continuing campaigns: * 2002/02/25-- JOP136 Default RHESSI Collaborations (#6850), POC: Tero Siili * 2003/05/13-- Default CDS Co-observations with TRACE (#6950) * 2005/09/20-- JOP153/MMOP003 Future Major Flare Watch (#8007) Campaign #6850 is for "individual instrument studies" selecting an active region target [partially] influenced by the Max Millennium target selection to maximise chances of serendipitous co-observations. EIT supports all with half/full-res 195 A CME watch in submode 5/6. As long as the spacecraft 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. The relevance and continuation (whether the originators have enough/alternate data) of these campaigns (except perhaps for RHESSI) is under review. * Apr 26-29 MDI Continuous Contact Default plan is full disk Magnetograms and Dopplergrams. * May 04-May 17 JOP187 Stereoscopic Observations of Coronal Structures (#7233), EIT/STEREO-EUVI/CDS/MDI/TRACE/Hinodes-EIS/ Hinode-SOT, POC: William Thompson & Simon Plunkett STEREO SECCHI requests synoptic EIT & LASCO data and prefers EIT to be obtaining full-resolution images. The SUMER/EIS campaign will take place in March and April to avoid EIT/SUMER submode conflict (i.e., allow SOHO to be in submode 6 during this campaign). SECCHI has also expressed interest in having Hinode to also join in the campaign (Hinode participation is TBC). The timing of this campaign is driven by the desire to conduct it when the STEREO spacecraft separation angle is in the range 7-10 degrees, but the timing is also constrained by the beginning of SOHO keyhole period on 18 May. The separation angle on May 4 is 6.5 degrees (and is acceptable to SECCHI). Timing remains TBC. EIT science planner through May 12 is Joe Gurman; May 13 - 17, Jack Ireland. Description of JOP 187 ("Stereoscopic Observations of Coronal Structures"; http://sohowww.nascom.nasa.gov/soc/JOPs/jop187.pdf) has been drafted by Simon Plunkett. Still TBD, if the shutterless run #27 on May 9 will be included. MDI has also been asked to participate in this coordination for 4-17 May. Full disk, 1 minute cadence Magnetograms or high resolution, 1 minute cadence Magnetograms and Continuum images have been requested. MDI can support either 4-17 May or 7-18 May (keep in mind that a keyhole period starts 18 May). CDS sequences have been outlined - the CDS planner will select studies depending on the STEREO sequence and available targets. TRACE will be supporting these observations. Comment from Simon Plunkett: Hinode-EIS will conduct raster scans in a set of lines selected to cover a broad range of temperatures. I am still awaiting final details on what Hinode-SOT will be able to do. They will be in eclipse season, and it is unclear how this will affect their observations. I believe SOHO and TRACE can respond faster than Hinode to changes in target, so I suggest that Hinode should drive the target selection. STEREO will make full-disk observations. * May 9, 15 EIT Shutterless #27, EIT/STEREO-SECCHI (TBD), POC (SECCHI): William Thompson Segment 1 Wednesday May 9, 2007 DSS-27 16:50-00:00 UT; run time 19:00-21:40 UT Segment 2 (notice date change) Tuesday May 15, 2007 DSS-27 14:10-23:45 UT; run time 19:00-21:40 UT There may be SOHO/STEREO-SECCHI collaboration on one or both of the runs, still TBC. * May 7-20 Exceptional Ulysses Quadrature observations, UVCS/CDS/EIT/ LASCO/Ulysses/Hinode/STEREO-SECCHI POCs: Giannina Poletto, Giulio Del Zanna The quadrature angle on May 14 is 55 degrees below the equator at west limb (position angle of 215 degrees). For additional and more detailed information on the quadrature, see also section 2c/UVCS. The observations consist of two parts: 1) May 7-11/18-20, coordinated observations with Hinode, UVCS/CDS/EIT/Ulysses/Hinode/STEREO-SECCHI Observations are conditional on an active region being at the limb to obtain electron temperature, density, chemical abundance, and ionization state of the plasma as function of height. If no suitable AR is available in the SW quadrant, but there is one in the SE limb, the connection with Ulysses will be missed and observations targeted to SE. EIT's support with synoptic images and CME watch will be sufficient. Provisional support from CDS, details are under discussion. The POC has confirmation from Hinode that the off-limb campaign is still scheduled, but not clear yet exactly when and which days. For next week, Hinode is going to follow the 'Del Zanna' active region that is now near the East limb and will be at the West limb when the campaign starts. 2) May 12-17, observations with radio scintillation measurements, UVCS/LASCO/Ulysses/MERLIN/STEREO-SECCHI The IPS observations will occurr on 12/14/15/16/17 May. STEREO will support, but details are to be worked out. LASCO has been contacted and plans to support. * Jul 3-8 JOP178 Filament and its Environment (TBC)/ JOP157 Bright points in active regions (TBC), SOHO/THEMIS, POC: Brigitte Schmieder Proposal for consideration from the POC. JOP157 would be used, if a target of opportunity appears. SOHO supports are solicited. * Jun 13-17 MDI Continuous Contact, TBC Current default plan is full disk magnetograms and dopplergrams. Timing TBC. * Jul 18-22 MDI Continuous Contact, TBC Default campaign is full disk, 1 minute cadence magnetograms and dopplergrams. * Aug 5-18 Filament/Cavity-CME-ICME IHY-CIP campaign, CDS/UVCS/TRACE/Hinode-EIS/Hinode-XRT/Hinode-SOT/COMP/ SOLARC/ProMag/MWA/RHESSI, POC: Terry Kucera As part of the International Heliophysical Year (IHY), we propose an observing campaign in the time interval August 5-18, 2007 which will follow a targetted filament from East to West limb, in order to study its morphology, evolution and activation, and quantify its magnetic and plasma properties. Our study will be greatly enhanced should the filament erupt as a CME, and if it does, we will also examine in situ observations in order to link any pertinent ICME and magnetic cloud observations to their filament source. CDS has not heard from the POC yet, but is likely to participate in some form. MDI inquired, whether its support is solicited. * Sep 10-Nov 11 MDI 60-day Continuous Contact (TBC) DSN schedule is not yet known (see section 1b). MDI will run 1 min cadence, full disk magnetograms and dopplergrams. * Oct 22-Nov 4 Active region morphology studies (TBC), SUMER/VTT/ HINODE (TBC)/TRACE/STEREO b) Intercalibration activities Last Intercal 1: 25 April 2007 * May 14-18 ICAL01 (#7113), CDS/EIT, TBC Details and confirmation will be determined by the planners. New date will need to be determined, as shutterless 27's segment 2 takes place on 15 May. EIT: ICALs are OK except (usually) during the weeks of shutterless. Comment from CDS: Would it be useful to run ICAL when SECCHI runs its 'all wavelengths' programme? 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 70 m antenna availability at the time. MDI may also downlink select magnetograms in the 5 kbps telemetry if no 70 m passes are available at least every 2 days for Mag dump in the 160 kbps telemetry. All requests for MDI support need to be made several months ahead of time and sent to mdi-ops(at)mdisas.nascom.nasa.gov. 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 focus 5, best focus for full-disk observing. Notice concerning availability of SOHO/MDI data: The hardware supporting the MDI data archive at Stanford University will be relocated during the week of 28 April through 6 May, 2007. During part of that time it will not be possible to retrieve data from the Stanford Helioseismology Archive, including most MDI data, either directly or through the VSO. We do not expect the system to be unavailable for the whole week, but data users should be aware of the possibility of such an interruption of service, and plan accordingly. Rick Bogart, MDI Data Scientist 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://www.cfa.harvard.edu/uvcs/observations/obst.html. A document from Steve Suess and Giannina Poletto discussing the Ulysses-SOHO quadrature geometry is available from Michael Uzzo and also at http://sohowww.nascom.nasa.gov/soc/UlyPosAng2007-2008.pdf. CDS: For details see http://solar.bnsc.rl.ac.uk/scientificops/request.shtml. Given the extended duration of the Ulysses-SOHO quadrature, CDS will carry out several observations at a convenient date selected at a relatively short notice. LASCO/EIT: EIT: 195 A CME watch plus synoptics at 6-hour cadence, as usual. Full-res CME watch whenever we're in submode 6. SUMER: There are tentative plans for a campaign from Oct 22 to Nov 4, working title "Active region morphology studies, joint observations of SUMER, VTT, HINODE, TRACE, STEREO". HINODE participation is still TBC. Despite the substantial photon load accumulated during the recent SOHO-HINODE campaign the remaining detector is still doing fine. TRACE: 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. For TRACE summer eclipse season see section 1e.
3. Any other business
* Next SPWG: Friday 25 May after daily & weekly meetings EIT: No comment CDS: No comment MDI: Either SUMER: No comment TRACE: Either UVCS: Either The rest are FYI items: * 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. * Future Mercury and Venus transits: SOC is requesting the Flight Dynamics Facility (FDF) to provide estimates and data for not only disk, but also for coronal transits. For this purpose FDF needs a criterion (radial/angular distance from Solar disk centre) to define the coronal transits. Currently FDF has been instructed to use SOHO/Sun/[Mercury,Venus] angle of (35 arcmin (from centre of Solar disk) as criterion. Instrument teams are requested to provide the SOC with information on whether a larger angle is applicable. * Hinode operational and planning information can be found from http://www.isas.jaxa.jp/home/solar/hinode_op/ * STEREO operational and planning information can be found via http://stereo-ssc.nascom.nasa.gov/, more specifically from http://stereo-ssc.nascom.nasa.gov/plans.shtml. * The SOHO JOP/ICAL database and the web pages are now the Solar JOP/ICAL database and web pages. This is due to anticipated increased contributions by and collaborations as well as intercalibrations with STEREO and Hinode. * To provide more unambiguous identification, individual instruments on board spacecraft other than SOHO will be as of this SPWG be referred to with notation SPACECRAFT-INSTRUMENT, for example Hinode-EIS. * The Project Scientist has decided that submission of the Inputs to the Activity Plan (IAPs) will change to be voluntary. The PS has informed the SOHO community of the change on 22 Feb by e-mail. * The FOT will begin testing the automation procedures on the week beginning 19 March. The passes will continue to be manned until after an operational readiness review and both agencies agree to a change in the mission management plan, both of which won't be for at least a couple of months, after we have significant experience with the automation. * New JOP vs. modified existing JOP rules-of-thumb: New JOP, if/when scientifically or qualitatively new type of a coordination is set up; modified JOP, when the investigation (the foci or targets thereof) remains essentially the same but new instruments/spacecraft/GBOs/etc are brought to bear.