SOHO SPWG Minutes



SPWG FINAL MINUTES
Friday 25 February 2005

1. Boundary conditions


- SOHO is upside down until the next manoeuvre, scheduled for 
  22 March with a station keeping fuel estimate of 0.105 kg.

- The March keyhole is still being planned. We expect to have GOLF,
  VIRGO, MDI (VC1), LASCO/EIT (submode 5 minimum), and CELIAS data
  almost continuously (shorter periods excluding CELIAS and/or
  LASCO/EIT may occur). The pass schedule (more details on expected
  losses of normal VC1 to come) can be found at
  
     http://soho.nascom.nasa.gov/soc/keyhole.mar05

  Some 26m stations are scheduled within the (revised) dates for the
  26m keyhole. It is possible that these passes will be executed
  mostly in medium rate, to improve the signal to noise ratio. This
  would mean much less MDI high rate, and longer delays to see data
  from recorded gaps.

- Scheduling windows for keyhole periods through 2005 are listed on the
  SOHO calendar. For estimated keyhole dates through 2008 see
  http://soho.nascom.nasa.gov/soc/keyholes.txt

  NOTE: We may move the High Gain Antenna by a fraction of a degree
  after the March keyhole, to avoid the "mini-keyholes" with degraded
  data that currently occur between each regular keyhole. Although other
  workarounds might be possible (degradation does not usually occur on
  every single pass, not all the time, and going to medium rate should
  help), they would not work for MDI continuous contacts.

- TRACE eclipse season ended 8 February though they still experience
  atmospheric absorption until March 6.

- 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.

- MDI continuous contacts are listed in Section 2 a) below and on the
  SOHO calendar.

  NOTE that the back-to-back summer keyhole, 60-day continuous, and fall
  keyhole make it unlikely that MDI can support anything between early June
  and late September. The exception would be studies during the 60-day
  continuous requesting 1 minute cadence magnetograms/Dopplergrams.

- KNOWN submode dependent activities & submode changes:

* TOO           JOP153/MMOP003 Future Major Flare Watch (SM5 if SUMER 
                  observes target, SM6 otherwise), TBC
* TOO           JOP175 Extended Filaments at the Limb (see sect. 2a), SM6

* Mar 2-Apr 1   26m Keyhole (Mar 10-24 34m Keyhole), SM5 (mostly)
* Mar 11        Submode change to Submode 5, 15 UT
* Apr 1-May 3   SUMER Campaign, SM5, TBC
* May 3         Submode change to Submode 6, 19 UT
* May 4,11      EIT Shutterless #19, SM6 (see times in Section 2a)
* May 12-14     IPS Measurements, LASCO/MERLIN/EISCAT/TRACE, SM6
* May 16        Submode change to Submode 5, 12 UT
* May 16-June 5 MEDOC Campaign, SM5
* Jun 4-25      26m Keyhole (Jun 09-20 34m Keyhole), SM5 or SM6(end)
* Aug 24, 31    EIT Shutterless #20, SM6, date TBC for Aug 31
* Aug 28-Sep 30 26m Keyhole (Sep 6-22 34m Keyhole), SM5 or SM6(end)
* Oct 19,26     EIT Shutterless #21, SM6, TBC
* Nov 1-Dec 15  SUMER Campaign, SM5, TBC
* Dec 2-22      26m Keyhole (Dec 06-17 34m Keyhole), SM5 or SM6(end)
* 06/05/01-06/06/15 SUMER Campaign
* 06/11/01-06/12/15 SUMER Campaign

- EIT Bakeout/Other

* Mar 11-Mar 31 EIT bakeout
 
- Commanding outlook: Note that during the keyhole (Mar 2-Apr 1) we'd
  like everyone to schedule all NRT with the SOCs, since there will be
  more FOT activities needed than during normal operations.

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
* '04/02-'05/05 Quiescent AR Loop Diagnostics (#7019), CDS/TRACE/EIT/SUMER,
                  POC: Helen Mason (h.e.mason@damtp.cam.ac.uk),
                  Local POC: CDS Planner
* 2004/02/19--  JOP175 Extended Filaments at the Limb, EIT/TRACE/LASCO/UVCS,
                  POC: Chris St Cyr (Chris.StCyr@nasa.gov)
* 2005/01/24--  JOP153/MMOP003 Future Major Flare Watch (#8002)

  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 Ċ CME watch in submode 5/6,
  except JOP175 getting half/full-res 304 Ċ 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.

  Campaign 7033 is dormant until after the TRACE eclipse season.

  The Quiescent AR Loop Diagnostics (#7019) will be run with CDS and
  TRACE during April 25-30, likely continuing until May 6 as long as
  it does not conflict with TRACE's commitment to a Sac Peak run.

* Feb 22-28     JOP155 Polar Coronal Jets, UVCS/CDS/EIT/TRACE, 
                  POC: Danuta Dobrzycka (ddobrzyc@eso.org)

  CDS running sit and stare study centred on the South limb.

* Mar 2-Apr 1   26m Keyhole (Mar 10-24 34m Keyhole)

* Mar 11        Submode change to Submode 5, 15 UT

* Mar 11-31     EIT Bakeout

* Mar 22        Spacecraft Maneuvers and 180 Degree roll

* Mar 25-Apr 5  Faraday Rotation Measurements, UVCS/VLA

* Mar 31-Apr 4  MDI Continuous Contact

  Reserved for Helioseismology, Line Profile Study probable.

  SOC note: The 26m keyhole is not officially over until April 1, so
  the start may be delayed a little.

* Apr 1-May 3   SUMER Campaign (submode 5)

  See section 2c for details.

* Apr 27-May 2  MDI Continuous Contact

* May 1-15      Moat Flows and Magnetic Features Around Sunspots, 
                  MDI/TRACE/Sac Peak, 
                  POC: Mandy Hagenaar (hagenaar@lmsal.com), TBC

  MDI will support with high resolution mag/doppler/filtergrams.  We
  have requested extra DSN coverage for this time between 14-22UT
  daily.

  TRACE has been contacted, awaiting more details.

* May 3         Submode change to Submode 6, 19 UT

* May 4,11      EIT Shutterless #19, segment 1, 16:00-18:40 UT, EIT/TRACE/CDS

  MDI can support, as long as it does not conflict with Hagenaar's
  Sac Peak study above.

* May 12-14     IPS Measurements, LASCO/MERLIN/EISCAT/CDS(TBC)/TRACE(TBC), 
                  POC: Andy Breen (azb@aber.ac.uk), Local POC: Kevin Schenk

  From Andy Breen: The idea is to have UVCS (and ideally CDS) giving
  us bulk outflow speeds from the low corona outward until UVCS runs
  out of signal-to-noise so that we have something to calibrate the
  drift speeds of the LASCO C2 brightenings against. If we can
  establish that the C2 brightenings are drifting at the background
  flow speeds then we will be able to say how much faster the ~100 km
  scale-size stuff which produces IPS is moving (unfortunately the
  radio source we're using for IPS doesn't quite come in close enough
  for a good overlap with UVCS).

  During the IPS study, EIT will have regular synoptics along with
  half resolution 195 CME watch, given that submode 6 is available.
  They will be in half resolution through the following MEDOC
  campaign.

  TRACE had not recieved an official request for this. It will likely
  conflict with Hagenaar's Sac Peak study above, which has precedence
  and will likely require continuous observing of the target most of
  the time.

  CDS and UVCS have not received any details about this request -
  input needed.

* May 16        Submode change to Submode 5, 12 UT

* May 16-June 5 MEDOC Campaign

* May 18-Jun 4  Active Region/Sunspot Study, CDS/VTT/THEMIS(TBC), CET 
                  daytime hours, POC: Andrzej Fludra, Local POC: CDS Planner

* May 25-30     MDI Continuous Contact

  No specific plans yet.

* May 26-Jun 8  Ulysses Quadrature, UVCS/Ulysses/SUMER(TBC)

  UVCS will support - other instruments TBD.
  SUMER support from June 3-5 (TBC).

Added after meeting:

* May 28-Jun 5  LASCO Extra pBs for 3D CME Study

  NOTE: Only synoptic sets from EIT while this study is running.

* Jun 4-25      26m Keyhole (Jun 09-20 34m Keyhole)

* Jun-Jul       Fine Magnetic Structures/Coronal Heating, 
                  SST/VTT/DOT/CDS/EIT/MDI/TRACE,
                  POC: Yukio.Katsukawa@nao.ac.jp (12 days total), TBC

  We're awaiting more information after the time allocation is done.

  MDI has not received any request for this, but would like to point out
  that with the keyhole during June 4-25 and the 60-day continuous
  period following immediately thereafter (June 25-August 28), it's not
  likely they can support with anything other than the default for the
  60-day continuous (i.e. 1 minute cadence magnetograms/Doppler images),
  at best.

* Jun-Jul       JOP157 Bright points in ARs, CDS/EIT/MDI/THEMIS/VTT,
                  POC: Etienne.Pariat@obspm.fr, (2 weeks total), TBC

  EIT will support with 195 CME Watch unless in keyuhole/bakeout.
  CDS is willing to support, but detailed arrangements and time 
  allocation can only be confirmed when dates are known.

  We're awaiting more information after time allocation is done.

  MDI has received no request, and the previous comment regarding the 
  keyhole/60-day continuous period applies.

* Jun 25-Aug 28 MDI 60 Day Continuous Contact, TBC

  Default plan is to run full disk Doppler (probably also with full disk
  magnetograms).

Added after meeting:

* Jul 20        Sounding Rocket Launch, EUNIS/MOSES/CDS/EIT, 
                  POC: Jeff Brosius & Charles Kankelborg, TBC

b) Intercalibration activities

  Last Intercal 1: February 17

* Week 10       ICAL01, CDS/EIT

c) Individual instrument plans

MDI:

  See section 2a for MDI continuous contact periods.

  For the March keyhole, MDI will likely reduce the ALT Cadence to
  less than 15 per day, but will likely not downlink any of the ALT
  Mags in the 5kbps telemetry unless a significant amount of the 70m
  antenna contacts are taken away and we think its necessary to ensure
  one Mag per day get to us.

  If DSN coverage for the June keyhole is similar, MDI's plans will be
  similar.

  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.

  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.

UVCS:

  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):

* Mar 1-10      UVCS Observations of Streamers at High Heights

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

LASCO/EIT:

* Mar 11-31     EIT Bakeout

SUMER:

  SUMER plans to resume operations from April 1 - May 3. Current plans
  are:

  Detector checkout
  Enrico Landi; active region diagnostic
  Nour-Eddine Raoufi & Davina Innes; UVCS - SUMER CME campaign 
    (details tbd.)
  TongJiang Wang; joint Solar-C/SUMER study on quiescent AR loops
  Uri Feldman & Enrico Landi; He abundance study

  The SUMER door will likely be opened on April 1, with science
  operations starting on April 4.

  Weekly planners (TBC):

     4 - 12 Apr    Curdt
    11 - 19 Apr    Schühle
    18 - 26 Apr    Innes
    25 Apr - May 2 McIntosh

  The MEDOC operations from May 16 - June 5 are still tbd. (will depend
  on the status of det A).

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.

  The atmospheric absorption ends March 6.

3. AOB


* Next SPWG: Friday 25 March, 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.