SOHO SPWG Minutes


		SPWG Meeting Minutes -- Friday, July 25, 1997



Chair: Bernhard Fleck
Notes: Laura Allen


 1. Review of Action Items 

   All action items from previous SPWG are closed.

 
 2. Boundary Conditions for the Coming Months 

   ACE is scheduled to launch on August 25.  If the ACE launch gets
   postponed until later.. the September activities (burns, roll, etc)
   will slide a week *forward* in time into week 35 (Aug 25-31) so that
   adequate DSN coverage (back-up antennas) will be able to be obtained.    

   Current schedule is:

S Aug 31        Gyro Calibration
M Sep 01        Momentum Management for Roll Maneuver (Labor Day)
T Sep 02
W Sep 03        +90 Degree Roll Maneuver (16 hour duration of roll) 

                 - Roll from nominal to a delta of +45, dwell for 1 hour
                 - Roll from +45 to +90 and dwell at +90 for the remaining time 
                   ~ 13 hours observing time (1 hour at +45, ~12 hours at +90)
                 - MDI high rate data VC2/VC3 requested during this time

T Sep 04        RW 4 Maintenance, Momentum Management, Station Keeping



   Also of note, we have received word that during the following days:
   December 24, 25, 26, 31 and January 1
   The DSN may not be able to give us the full 8 hours of our requested
   long contacts (i.e. 6 hours instead of 8).  Initial reaction from
   teams present at the SPWG was that it should not be much of a problem
   since they try to simplify their programs for the holidays anyway.


 3. Preview of Future Months 

   After the September maneuver activities, there are plans to try and upload
   new versions of Submode 2 and 3.  The new versions can only work
   with adding 8 additional packets (not the 12 additional packets that were
   gained prior when Submode 1 was patched to create Submode 5).

   The new Submode 2 would give 8 additional packets to CDS
   The new Submode 3 would give 8 additional packets to LASCO/EIT.


 4. Priorities for the coming month

See also: http://sohowww.nascom.nasa.gov/~soc/head_calendar.html

CDS - * Non-thermal broading along a loop, campaign with Norikura
        (Aug 4-9 and Aug 23 - Sept 3)
      * Spicule study with Tenerife (Aug 6-10)
      * Bright Point Studies (JOP023) August 4 and 5 with Yohkoh

SUMER - will go to central meridian at some point in the future 
        The representatives present have not received input from
        the PI so cannot supply much information at this SPWG.

UVCS and LASCO -- observations of Comet Tabur (within 10 solar radii
         between August 16-19, magnitude 5.7 ; prime day for UVCS
         is August 18 when it will be ~ 8 Solar radii)
         UVCS -- Week 35 will be taken up mostly by calibrations.
         LASCO also plans to do some C1 closed door calibrations
         prior to Sept maneuver.

EIT -- Polar Plumes during week 33 with Sac Peak  
       Calibration rocket flight has moved to September 19

MDI -- continuous contact next month in August may be similar to last
       month of their 3 month continuous contact they ran.
       Collaborations with Sac Peak (no firm dates yet) and 
       Mount Wilson (Aug 28-30).
       Also like to schedule runs of JOP068 in Weeks 36 and 37, since
       the sun will be at maximum B angle. 


 5. JOPs status
 

-

 6. New JOPS 

JOP068 -- Solar Wind from Coronal Holes:  A Closer Look
submitted by Craig DeForest


 7. AOB

Rock Bush presented a viewgraph showing a plot of the data obtained during
the March roll.  He thinks that at the next opportunity for a roll (May, 1998)
MDI would like to ask for some stops at 180 and 270 degrees.

Next SPWG will be on Friday, August 22.