SOHO SPWG 26 Jan 2007 Meeting Minutes
1. Boundary conditions
a) Orbit, attitude and manoeuvres - SOHO is currently upside down - manoeuvres Feb 27 stationkeeping and momentum management (timing TBC); roll date TBD May 29 roll, stationkeeping and momentum management (timing TBC) b) Communications with the spacecraft Graphical DSN schedule: http://soho.nascom.nasa.gov/soc/dsn/ Madrid 70 m antenna (DSS-63) is again operational. DSN schedule planning is expected to reach end of week 10 (possibly also 11) on Friday, 19 Jan. * Feb 13-Mar 12 26 m keyhole * Feb 20-Mar 5 34 m keyhole * May 18-Jun 5 26 m keyhole * May 22-May 31 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) * TOO JOP175 Extended Filaments at the Limb (see sect. 2a), SM6 * Mar 13-Apr 30 SUMER/Hinode campaign, SUMER/EIS, TBC by Hinode team * May 1-14 SOHO/STEREO campaign, EIT/SECCHI (dates TBC after Hinode commissioning) * 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 eclipses * Oct 5-Mar 1 TRACE winter (hard) eclipse season
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) * 2004/02/19-- JOP175 Extended Filaments at the Limb (#7135), EIT/TRACE/LASCO/UVCS, POC: Chris St Cyr * 2005/09/20-- JOP153/MMOP003 Future Major Flare Watch (#8007) 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 A CME watch in submode 5/6, except JOP175 getting half/full-res 304 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. * 2006--)May 19 Exceptional Ulysses Quadrature (starts Dec 19, 2006) 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. Given the extended duration of the quadrature, CDS will carry out several observations at a convenient date selected at a relatively short notice. * Feb 1-5 MDI Continuous Contact Current default plan is full-disk magnetograms and dopplergrams. * Mar 28-Apr 1 MDI Continuous Contact Current default plan is full-disk magnetograms and dopplergrams. Timing TBC. * Apr 1-30 SOHO/Hinode campaign, SUMER/CDS/EIS, POC: Werner Curdt SUMER starts collecting proposals. SUMER operations including test runs etc. will start on 22 Mar (submode change timing TBC). CDS will also support (see also section 2c). CDS on JOPs: The campaign is likely to consist of a mixture of existing JOPs and new studies, hence neither updating an old JOP nor creating a single new JOP seems appropriate or necessary. Re JOPs - approach TBD - see also section 2c/SUMER. --) #EIS - changes, comments? New JOP or update of an old one? * Apr 25-29 MDI Continuous Contact Current default plan is full disk magnetograms and dopplergrams. Timing TBC. * May 4-17 SOHO/STEREO campaign, EIT/SECCHI/Hinode (TBC), POC: William Thompson STEREO SECCHI requests synoptic EIT & LASCO data and prefers EIT to be obtaining full-resolution images. Hence the SUMER/EIS campaign will take place already in March 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. SECCHI has recently suggested May 7-20 (due to a change in STEREO/Behind's orbit), but that time period will overlap the initial days of the May SOHO keyhole (see section 1b), which might hamper EIT's ability to support. To avoid that overlap May 4-17 have been proposed instead. The separation angle on May 4 is 6.5 degrees (and is acceptable to SECCHI). Timing remains TBC, but is foreseen to be confirmed before beginning of February. EIT science planner for that period still TBD (for some months). Simon can contact Kevin and Joe in the meantime. A JOP will very likely be written for this campaign by Simon Plunkett. Still TBD, if the shutterless run #27 on May 9 will be included. * May 9, 16 EIT Shutterless #27, EIT/SECCHI (TBD), POC (SECCHI): William Thompson The shutterless campaign during the SECCHI campaign may be dropped unless there is SECCHI interest in our keeping the shutterless in the plan. * Jun 13-17 MDI Continuous Contact Current default plan is full disk magnetograms and dopplergrams. Timing TBC. * Jul 18-22 MDI Continuous Contact Timing TBC. b) Intercalibration activities Last Intercal 1: 10 January 2007 * Feb 5-9 ICAL01 (#7113), CDS/EIT, TBC Details and confirmation will be determined by the planners. EIT: ICALs are OK except during the weeks of shutterless. 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. UVCS: We have been using the LyA detector for some observations and will keep planning so when appropriate. Update on UVCS observing plans for February: Jan 29 - Feb 11 Observations of Polar Coronal Holes at 2-2.5 Rsun Feb 12-Feb 18 Instrument Calibrations/Obs. of 38 Aqr/Streamer Study Feb 19 Safe for keyhole Feb 20-Mar 6 No Observations during keyhole The current plan may be modified when we have a more definite information about the DSN schedule during the keyhole and the prediction for the star trajectory. For weekly plans, see the SOHO calendar and the UVCS planning page: http://cfa-www.harvard.edu/uvcs/observations/obst.html. See also the Exceptional Ulysses Quadrature. CDS: For details see http://solar.bnsc.rl.ac.uk/scientificops/request.shtml. Joint observations with EIS and other Hinode instruments are top priority for CDS for the next several months, including through the period of SUMER/EIS campaign in Mar-Apr 2007. Detailed plan TBD. Detailed plans of Hinode instruments are made available to CDS at a short notice, usually one day in advance. This is not fully satisfactory but we understand that the Hinode team are very busy at this stage. CDS planners respond as appropriate. If SOHO SOCs have access to Hinode weekly plans, forwarding them to us would be appreciated. JOP 178 has been requested by Brigitte Schmieder for week starting 23 April 2007, between 8-12 UT. 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: The SOHO/HINODE spring campaign is scheduled now from 1 April to 30 April. SUMER operations including test runs etc. will already start on 22 March (submode change is tbc.) SUMER science planners for the campaign: 22 Mar Germerott (submode change tbc.) 26 Mar Curdt (preparation phase) 02 Apr Tothova 09 Apr Kucera 16 Apr Teriaca (operated from MEDOC, with local support at EOF) 23 Apr Madjarska (operated from MEDOC, with local support at EOF) SUMER is collecting proposals, existing JOPs can be reactivated and new studies can be submitted. Before acceptance any study will be critically rated by an evaluation board. Priority will be given to SOHO/EIS collaborations. TRACE and STEREO/EUVI support as well as GBO co-observations (and self-evidently CDS, EIT, MDI) would be highly appreciated. There are tentative plans for another SUMER campaign in October/November, details are TBD. 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.
3. Any other business
* Next SPWG: Friday 23 February daily & weekly meetings 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 in the process of becoming and being renamed "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.