SOHO SPWG Minutes



SPWG FINAL MINUTES
Friday 25 June 2004

1. Boundary conditions


- SOHO is now upside down until the the next manoeuvre, which will
  take place during the September keyhole.

- The scheduling windows for the next 2 keyhole periods are given
  below.  For estimated keyhole dates through 2006 see
  http://soho.nascom.nasa.gov/soc/keyholes.txt

* Sep 12        High Rate on 26m stations ends, TBC
* Sep 17        High Rate on 34m stations ends, TBC
* Oct 01        High Rate on 34m stations resumes, TBC
* Oct 05        High Rate on 26m stations resumes, TBC

* Dec 13        High Rate on 26m stations ends, TBC
* Dec 16        High Rate on 34m stations ends, TBC
* Dec 26        High Rate on 34m stations resumes, TBC
* Dec 29        High Rate on 26m stations resumes, TBC

- Long-term DSN outlook: The Mars missions may last through the end of
  the year. Expect keyhole schedules similar to the last/next one as
  long as they are operational.

  The long-term scheduling for 2005 and 2006 indicates that there will
  be very substantial losses of normal VC0/1 during most keyholes, but
  we hope that the SSR patch (see below) will be available to capture
  GOLF, VIRGO and MDI structure with no interruptions.

- Work on an on-board patch for recording only selected APIDs
  (e.g. GOLF, VIRGO, MDI and possibly some spacecraft housekeeping
  data) on the SSR is progressing. We now have a preliminary version
  of the patch that is being tested on the simulator, with promising
  results. 

  Although the simulator does not give the exact recording efficiency
  due to the dependence on hardware interrupt timing, it does simulate
  all the COBS (Central On-Board Software) interactions faithfully.

  Unfortunately, it now looks like the final delivery will not happen
  until some time in August. The on-board test will have to be
  performed soon after delivery, presumably during an already existing
  break in the 60-day continuous contact.

  Uploading the patch is a very simple and short task, and should fit
  within a normal SVM period.

- The DSN schedule (updated May 19), dates/times of first/last VC0/1
  loss, and planned recording intervals for the June keyhole can be
  found at

        http://soho.nascom.nasa.gov/soc/keyhole.jun04

  The corresponding plot of the Tape/Solid State Recorder usage etc
  can be found at

        http://soho.nascom.nasa.gov/soc/keyhole_jun04.pdf

- Unless a Major Flare Watch is in progress, TRACE will be doing full
  disk mosaics if/when EIT is not able to do synoptic sets due to
  keyhole operations.

- MDI continuous contacts

* Jul 4-Sep 5   MDI 60 Day Continuous Contact (Full Disk Mags and Doppler)
* Nov 3-7       MDI Continuous Contact
* Dec 1-5       MDI Continuous Contact

  The baseline plans are as stated above, and other types of
  observations are not likely for these time periods even if requested
  for collaborations. As usual, 96 minute magnetograms will be
  available.

- ALL KNOWN submode dependent activities & submode schedule:

* TOO           JOP175 Extended Filaments at the Limb (see sect. 2a)
* Aug 25        EIT Shutterless, TBC
* Sep 1         EIT Shutterless, TBC
* Nov 24        EIT Shutterless, TBC, TRACE has conflict w/JOP173
* Dec 1         EIT Shutterless, TBC

  Submodes: Submode 6 (until further notice)

- EIT Bakeout/Other (shutterless obs listed under "Submode dependent
  activities" from now on):

* Jun 15-Jul 4  EIT Bakeout

* Commanding outlook: See AOB section.

2. Priorities for the coming month & more


a) Joint observing plans and campaigns

Continuing campaigns:

*               JOP136 Default RHESSI Collaborations (#6850), POC:Stein Haugan
*               Default CDS Co-observations with TRACE (#6950)
*               JOP153/MMOP003 Major Flare Watch (#7030)
*               JOP159 CMEs in Lyman-alpha (#6870), SWAN/LASCO/EIT/UVCS,
                  POC: Chris St Cyr, Eric Quemerais
* Feb-Sep 2004  Quiescent AR Loop Diagnostics (#7019), CDS/TRACE/EIT/SUMER,
                  POC: Helen Mason (h.e.mason@damtp.cam.ac.uk),
                  Local POC: CDS Planner
*               JOP175 Extended Filaments at the Limb, EIT/TRACE/LASCO/UVCS,
                  POC: Chris St Cyr (Chris.StCyr@nasa.gov)
*               Network-Internetwork Oscillations (#7033), EIT/TRACE,
                  POC: Scott McIntosh

  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.

  The running of the Quiescent AR Loops is left to the decision of the
  CDS planner.

  EIT supports all with half/full-res 195  CME watch in submode 5/6,
  except JOP175 getting half/full-res 304  CME watch in submode 5/6,
  and Network-Internetwork Oscillations which is TBD by Scott McIntosh.

* Jun 15-Jul 4  EIT Bakeout

* Jun 29-Jul 9  Irradiance Variations, TRACE/La Palma SST,
                  POC: Thomas.Berger@lmco.com

  MDI can only support this with Full Disk Mags and Dopplergrams (high
  resolution observations were requested, so MDI is no longer listed as
  supporting this campaign).

  Tom Berger has defined a program for TRACE.

* Jul 4-Sep 5   MDI 60 Day Continuous Contact (Full Disk Mags and Doppler)

* Jul 8-15      JOP171 Solar Network Variability and Dynamics,
                  CDS/TRACE/EIT/MDI/VTT/DOT,
                  POC: Hubertus Woehl (hw@kis.uni-freiburg.de)

  CDS may have to run another study on July 8, 7:00-13:00 UT, TBC.  If so,
  CDS support can be moved to a later time.

  EIT: synoptics and 195  CME watch.

  MDI can only support with Full Disk Mags and Dopplergrams.

  TRACE will coordinate but the La Palma coordination will take priority
  on July 8 & 9.

* Jul 25,29,30  JOP100 AR DEM for Heating & Magnetography, 
                  CDS/EIT/VLA/Mees/MDI/TRACE,
                  POC: Jeff Brosius (brosius@comstoc.gsfc.nasa.gov),
                  VLA ~1330-1930 UT, CDS ~1330-2130

  From Jeff Brosius: Coordinating with infra-red off-limb coronal
  magnetic field measurements from Mees (to cross calibrate with
  VLA/CDS measurements).  Ideally, CDS observations will cover the
  entire VLA observing period (1330 - 1930 UT), as well as extend into
  the Haleakala observing period (to, say, 2130 UT).  This is the
  first time that anyone has ever attempted to measure the coronal
  magnetic field strength simultaneously with both Zeeman splitting
  (the IR observations) and coordinated EUV/radio observations
  (gyroresonance harmonics). EIT synoptics (1300 & 1900) plus regular
  CME watch will be adequate.  TRACE observations would be helpful but
  are not essential.  Several routine full disk magnetograms and
  continuum intensity images from MDI will be adequate. 
 
  EIT will take those synoptic sets, and can support with 11x11 full-res
  synoptic sets at 15, 17, 21 and 23 iff (1) the pointings are given
  sufficiently far in advance and (2) there is NRT during those times
  (a safety consideration). Subject to support for JOP178 as well.

  TRACE will support on July 25, and will support on July 29 & 30 but only
  after JOP178 is finished.

  CDS will prioritise JOP100 by switching to JOP100 at 13:30 UT on 
  July 29 & 30.

  MDI will support with full disk magnetograms every minute and
  continuum images every 96 minutes.

NOTE: JOP178 will replace the plans for JOP157, JOP012, and Roudier's
Photospheric/Chromospheric Motions study.

* Jul 29-Aug 4  JOP178 Filament and its Environment, 
                  CDS/MDI/EIT/TRACE/THEMIS/SST/DOT/DST/Meudon/Pic du Midi/
                  Bialkov/Ondrejov,POC: Etienne Pariat (Etienne.Pariat@obspm.fr)

  On July 29 & 30, CDS will support JOP178 during 08:00-13:30 UT (switching
  to JOP100 at 13:30).

  Brigitte is trying to work out a plan that allows CDS to support both.

  EIT request is 195 CME watch with 304 image during the observation
  period.  Note conflict with JOP100 if subfield synoptic sets are
  requested for that JOP.

  MDI can only support with Full Disk Mags and Dopplergrams.

* Aug 5-16      JOP083 High Cadence Activity and the Heating of Coronal Loops,
                  CDS/TRACE/MDI, POC: Robert Walsh (robert@mcs.st-and.ac.uk)

  MDI can only support with Full Disk Mags and Dopplergrams.

* Aug 25        EIT Shutterless, TBC

* Sep 1         EIT Shutterless, TBC

* Sep 12        High Rate on 26m stations ends, TBC
* Sep 17        High Rate on 34m stations ends, TBC
* Oct 01        High Rate on 34m stations resumes, TBC
* Oct 05        High Rate on 26m stations resumes, TBC

* Oct 5-19      JOP178 Filament and its Environment, 
                  CDS/MDI/EIT/TRACE/THEMIS/SST/DOT/DST/Meudon/Pic du Midi/
                  Bialkov/Ondrejov, 
                  POC: Thierry Roudier (roudier@bigorre.bagn.obs-mip.fr) &
                  Brigitte Schmieder (Brigitte.Schmieder@obspm.fr)

  MDI should be able to support this study (no 5-day continuous contact in
  October).

  It is important for CDS that study names and the detailed observing
  sequence are provided well in advance of the observation.

* Oct 18-23     CDS/HIDA Observations, CDS/HIDA, TBC

  Details to be provided by Tetsuya Watanabe (WATANABE@uvlab.mtk.nao.ac.jp)

* Nov 3-7       MDI Continuous Contact

* Nov 23-Dec 2  JOP173 3D Structure and Dynamics of Sunspots, 07:00-22:00 UT,
                  TRACE/MDI/VTT/THEMIS/La Palma SST/DOT/DST/MST,
                  POC: Karin Muglach (muglach@nrl.navy.mil)

  MDI will likely be able to support this as long as it does not
  conflict with the beginning of the December 5 day CC, from 1-5 Dec.
  HR Mag, Doppler and Filtergrams are requested.

  TRACE still has this listed as TBC. There's a conflict for TRACE
  with the EIT Shutterless November 24. The status of this conflict
  will be worked out when the TRACE program for JOP173 has been worked
  out - there may be a mutual benefit between the two campaigns.

* Nov 24        EIT Shutterless, TBC

* Dec 1         EIT Shutterless, TBC

* Dec 1-5       MDI Continuous Contact

* Dec 13        High Rate on 26m stations ends, TBC
* Dec 16        High Rate on 34m stations ends, TBC
* Dec 26        High Rate on 34m stations resumes, TBC
* Dec 29        High Rate on 26m stations resumes, TBC

b) Intercalibration activities

Last Intercal 1: May 26 (Week 22)

* Week 28       ICAL01, CDS/EIT, POC: EIT and CDS planners

  Week 28 is July 5-11, but note that Monday is a holiday.

c) Individual instrument plans

MDI:

  See section 1 (boundary conditions) for MDI continuous contact
  periods.

  MDI will continue to downlink Magnetograms via the 5k telemetry stream
  during Keyholes, as long as the SSR/TR patch is not complete.  Once the
  SSR/TR patch is complete, MDI will likely downlink a Magnetogram in the 5k
  telemetry stream 3 times per day in addition to having near-continuous
  medium-l data.  MDI will not store Magnetograms on board during this time,
  thus the normal vc2obs campaign that dumps stored Magnetograms will not be
  used, should we get VC2 at any time during the Keyhole.

  All requests for MDI support need to be made several months ahead of
  time and sent to mdi-ops@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.

UVCS:
  See their planning page (below) and the SOHO calendar for weekly plans.
  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):

  UVCS will be in a safe configuration (no observations) during the 
  June keyhole.

* Jul 3-11      UVCS Observations of Equatorial and North Coronal Holes
* Jul 12-18     UVCS Temporal Variations of Ion Intensities
* Jul 19-25     UVCS Observations of Equatorial and South Coronal Holes

CDS:
  See their request diary for details:
    http://solg2.bnsc.rl.ac.uk/scientificops/request.shtml

  A new, one-day study, 'St Austell College Observation' has been added.
  Possible dates are 6-8 July. NRT is required. The study may have to run
  on July 8, if necessary - in this case, we would request that JOP 171 on
  July 8 be moved to a later time.

LASCO/EIT:

SUMER:

  Dates for SUMER operations during autumn are still 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. AOB


* Next SPWG: Friday 30 July, right after weekly meeting in the EOF.

The rest are FYI items:

* If anyone has projects that require high-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.

* Commanding outlook:

Week 27 Jun 28-Jul 04: Lots of uplink/downlink station pairs.  Downlink
                       only station on Thursday and Friday.  D27 on
                       Thursday. Check w/SOCs for ANY commanding this
                       week due to keyhole activities.

Week 28 Jul 05-Jul 11: Downlink only station very early on Wednesday.
                       Continuous contact all week.  D27 on Monday.

Week 29 Jul 12-Jul 18: Continuous contact all week except 03:00-07:10 UT
                       on Wednesday.  D27 on Monday and Tuesday.

Week 30 Jul 19-Jul 25: Continuous contact all week except 12-15:10 UT
                       Tuesday and 03:40-08:05 UT Wednesday.  D27 on
                       Monday, Tuesday and Sunday.

Week 31 Jul 26-Aug 01: Continuous contact all week except 11-15:30 UT
                       Tuesday, 03:40-08:40 UT Wednesday and 04:10-08:40
                       UT Friday.  Downlink only station 15-17:25 UT
                       Friday.