SOHO SPWG Minutes

Tuesday, June 27, 2000
1. Review of action items
  None.


2. Boundary conditions 
* Tuesday, July 18 -- Maneuvers (MM/SK).  

  Only a Momentum management and station keeping will be performed.
  An earlier preliminary fuel estimate for the station keeping
  was ~ 640 grams but estimate may change a bit as the date draws closer
  and more calculations are done.  Plan on maneuvers taking the entire
  day, with instrument safing on July 17.

  There will not be any reaction wheel #4 maintenance ever again.
  Performing the maintenance in gyroless mode creates a single point of
  failure and no formal maintenance requirement was requested by the
  manufacturer.

* MDI Continuous -- presently scheduled to officially end on July 11.

* Submodes -- On July 12, scheduled to switch to submode 6.
              Will remain in submode 6 until September. (No SUMER
              operations planned for August).


3. JOPs status 
* Updated JOPs: None

* New JOPs:

  - JOP126, EIT/TRACE/Norikura/Yohkoh SXT, 22 - 06 UT, POC: Louise Harra 

    This is accepted in principle, but the TRACE and EIT parts
    need revision.  For EIT they specify that in Submode #5
    they will get only 2x2 binned and not full resolution images.
    We will revisit this JOP again at upcoming SPWGs.

  - JOP127, LASCO/EISCAT/Ulysses-HiScale/Nagoya-Toyakawa 
            Nancay/Ooty/MICA/HASTA/HAO-MKIV(?)/TRACE(?)/Others(?)
            POC: Gareth Lawrence (grl@star.sr.bham.ac.uk)

    This is accepted in principle, but the list of participants needs
    to be finalized and the EIT bake-out confirmed with 100 % certainty
    for September 8-11.  We will revisit this JOP again at upcoming SPWGs.

  - JOP128, VLA/SOHO Investigation of the Evolution of 
            the Active Region Corona, 15:00 - 21:00 UT
            CDS/EIT/MDI/OVRO/VLA/TRACE, EOF contact: Jeff Newmark

    Accepted.


4. Priorities for the coming month 
a) Joint observing plans

 - JOP125 and JOP128 are starting this week (will not elaborate for
          brevity).

 - ICAL006 - SERTS launch at 17:30 UT July 26, with window 
               extending to 18:15 UT. POC: Jeff Brosius
               CDS/EIT/CELIAS/MDI/TRACE/Yohkoh/OVSA/
                 VLA (12:53 - 00:55 UT)/BBSO/KPNO/Meudon/Coimbra
               Note, Antenna coverage:
               DSS-16 prime from 14:10 to 00:45 UT
               DSS-27 backup from 16:25 to 19:00 UT

	      An updated JOP description is requested.
	      TRACE mentioned that there may be a problem with the
              request for 1216 A image.. but will discuss internally.
              An EIT 304 image in the middle of the rocket flight is
              essential for pointing determination.

 - JOP100:  AR DEM for Coronal Heating and Magnetography
            Studies, CDS/EIT/MDI/TRACE/Yohkoh/VLA (14-24 UT)/OVSA,
            July 27 & 30, POC: Jeff Brosius

              The VLA time spans 10 hours, so CDS will observe
              5 regions for 2 hours each.  MDI full disk magnetograms
              (1 minute cadence) is acceptable for support for this JOP.
              TRACE expressed concern of the amount of target switching.
              Jeff Brosius will e-mail TRACE (to trace_planner account)
              to describe/discuss support details with them.
	      The EIT program for this needs to be slightly modified.

 - July 13-21:  MDI mentioned that Sasha Kosovichav was interested in
                doing sunspot studies and had some time at Sac Peak.
                The MDI team needs to discuss this request internally
                to learn more and decide if they will support.
                If this does become an official campaign, the SOC
                requests more a write-up and notes that CDS
                may also be interested in participating.

b) Individual instrument plans

   CDS -- JOP128, JOP100.  Sunspot oscillations study (A. Fludra) and
          Polarity Reversal Monitoring Program (B. Bromage) will be run
          once per week.  CME Onset Watch will be run several times in
          early July.  Oslo Active Region Loops and Sunspot Campaign will
          be run as a target of opportunity for the last two weeks in
          July.
 
   UVCS -- 30 Jun - 04 Jul -- S. Habbal
                              Coordinated observations during the Mars
                              Global Surveyor conjunction
	   05 Jul - 09 Jul -- N. Atkins 
                              Instrument characterization and standard 
                              synoptic 
	   10 Jul - 20 Jul -- M. Povich 
                              Measurements of outflow in streamers from
                              spectral line shifts 
	   21 Jul - 27 Jul -- M. Romoli 
                              Visible light channel characterization 
	   28 Jul - 30 Jul -- Y-K Ko 
                              CME Watch Campaign
 
   EIT/LASCO -- Nothing unusual to report.

   MDI -- End of continuous likely to be either July 11.

   TRACE -- Encourages coordinated observations for August and 
            early September.  Starting mid-September there are
            already many requests.. so please try to utilize
            the August and early September period.

            13 Jul - 26 Jul - Tracking of polar-crown or QS filament
                              or prominence across the disk
   
c) Intercalibration activities

  The last ICAL001 was done was on May 22.
  Werner Curdt from SUMER will be at the weekly meeting this 
  Friday so we will discuss at the weekly as to running an 
  Intercalibration next week.


5. Preview of future months
* See the Monthly Calendar at: 
  http://sohowww.nascom.nasa.gov/soc/head_calendar.html


6. AOB
* Next SPWG:  Friday, July 21 at 2:00 pm in EAF  

* REMINDER:  DSN support should be requested at least 6 months in advance.
  Keep this in mind for: ground-based collaborations that require MDI
  support, stellar observations that require NRT, etc.