SOHO WEEKLY PLANNING MEETING
		     MINUTES
              For Week 20, May 13-19, 1996

Notes by Laura Allen and Eliane Larduinat

1. ANNOUNCEMENTS

Helen Mason has a student coming for the summer who needs a car
and a place to stay. People are asked to help if they can.

2. MONTHLY SCHEDULE UPDATE

See SOHO Web pages under /operations/schedule/monthly.txt
for upcoming maneuvers, collaborations, and JOPs.
Bill Worrall is going to negotiatate with DSN. After the 2 months 
of continuous contact, the SOHO DSN contact times should better 
coincide with our normal working hours.

Jim Klimchuck (NRL) presented a proposal for a Yohkoh-SOHO 
collaboration for the measurement of the filling factors
of coronal loops.  Filling factor uncertainties are still very 
large and there is a need for good spectroscopic diagnostics.  
Jim will work out an observing sequence with CDS and would like to 
have observations during the next week or so (presence of active region).
Study will try to understand what temperatures and emissions from 
Yohkho mean by comparing Yohkho's broad band filters with spectra 
from CDS and SUMER.  Would like to measure time variability of plasma 
in the loops and they expect to see plasma at whole range of temperatures 
from a few thousand to few million degrees.  However, the focus would 
be on the hotter rather than the cooler loops.  Also, pointed out that 
the closer the region of study is to the center of the disk, the easier 
it would be to subtract the background.
The duration of the "Fill Fac N" sequence is 2 hours and they would 
like to repeat it a few times in order to get a better signal to noise 
ratio.  MDI magnetograms could also contribute to the study, but, 
this needs to be coordinated with MDI which may not be taking these 
automatically. EIT would participate in this study but only if it does 
not interfere with their pre-established synoptic set.  However, EIT 
will be running a sequence with FOV about equal to MDI high resolution 
FOV.  EIT could move the region (except on Tuesday).  Andrez Fludra 
will coordinate this study for CDS.

3. OPERATIONS CONSTRAINTS

DSN Schedule (see SOHO Web pages).  Long contacts for next week start 
around 20:00 UT for most of the days.

Momentum management.  
On Thursday May 16, spinning-up gyros (30 to 45 min)  
Actual burns on May 21 or 22 (Roger Rowe will send out email with more
detailed timeline).
MATRA requested MDI to perform jitter tests.  This should take only 15 
to 20 minutes, but times for VC2 and NRT need to be coordinated.
Preparations for momentum management:
  Instruments that will close doors:  
   CDS, SUMER, UVSC, LASCO, EIT(TBC), 
  Instruments that do not need special preparations:  
   MDI, VIRGO, CELIAS-MTOF.
   CELIAS-CTOF and STOF are TBC.
   All instruments should confirm their intentions via Email to the SOC.
   (soc@soc.nascom.nasa.gov)

4. COORDINATED OPERATIONS

JOP Information (for a detailed description, see the SOHO Web pages) 

JOP002 
Alan Gabriel will be here next week to coordinate.
SWAN will participate for galatic survey (a SWAN representative 
will be here).
If CDS cannot participate, this execution of JOP002 will be cancelled.
In this case, the momentum management on Friday May 17 would also
be cancelled.  Decision expected by Wed May 15.
Total duration should be less than 16 hours as required by the
helioseismology experiments.
EIT/LASCO would like 120 to 180 minutes dwell time at 45 degrees. 

JOP002-test
  Scheduled for May 15.  Results will help in decision to go ahead 
  with JOP002 and need for momentum management on May 17.

JOP027 
  Postponed (cancelled for May 16)

Updated Schedule for JOPs and Intercalibrations on Week 20:

M May 13        Intercal009; coordinator : Joe Michels (UVCS)
		Start: 15:00 UT
        	Duration: 7.5 hours. During contact, NRT not required  
                Participants: UVCS and SUMER. (LASCO TBD)

                Yohkoh-SOHO collaboration.

T May 14        JOP022; coordinator: Philippe Lemaire (SUMER) 
                Start: 16:00 UT
                Duration: 5 hours  
                Participants: 
                   SUMER/CDS
                   + MDI if VC2 can overlap with JOP run time
                   + EIT if it fits into their synoptic plan

W May 15        ICAL001-- Coordinator: Udo Schuehle (SUMER) 
                Start: 00:00 UT 
                Duration: 165 minutes  
                Participants: This run will be a SUMER-only activity.
                   (CDS cannot participate because of GIS problems)

		JOP002-test; Coordinator: Philippe Lemaire (SUMER)
          	Start: ~18:30 UT
                Duration:  2 hours for test NRT: Not required  
                Participants: 
                   SUMER/CDS/UVCS
                   + EIT/LASCO since only their synoptic set is needed.   

T May 16          
F May 17        Momentum management -- experiments close doors if needed
S May 18        Experiments reopen doors, CDS reconfigure
S May 19        Normal operations, CDS reconfigure
 

5. WEEKLY SCIENCE TIMELINE

MDI VC2
On Tuesday May 14th, MDI wants an hour of overlap with JOP022 for VC2
An OCD is in effect for 2 half-hour blocks of VC2 during each long 
contact for next few days.  Baseline VC2 for short contacts 10 minutes.

No additional telemetry submode tests for EIT are scheduled.

MDI plans a large command uploads by background-queue to reload their
flat-field.  LASCO will start their regular weekly uploads (a few hundred 
commands) on Monday or Tuesday.

6. AOB
 
Meeting Schedule for next week: 

Thursday, May 16th: Daily Meeting - 8:30 am in EOF
                    SWT -  9:00 am in EAF 
	   	    SOHO Science Mini-workshop -- following SWT.
Friday, May 17th:   Daily Meeting -- 9:00 am in EOF 
		    Weekly Meeting -- 9:30 am in EOF
		    SPWG - 10:30 am in EAF
             	    SICWG - 3:30 pm in EAF