SPWG FINAL MINUTES
Friday January 24, 2002
1. Review of action items
2. Boundary conditions
* The next MM/SK maneuver is still scheduled for February 19, 2003.
The delta-V is 0.513 m/sec Sunward, station keeping burn time is
about 1 hour. The fuel estimate is 0.4271 kg (SK) + 0.0189 (MM),
a total of 0.446 kg. Some small adjustments are likely.
We would like to have all instrument plans for the pre- and post-
maneuver safing, recovery and other activities ironed out well in
advance. Please work out details w/SOCs to make sure everything
goes smoothly.
LASCO, CDS, MDI & UVCS will do their "normal" safing/recovery activities.
We need to hear from CELIAS/STOF & SWAN.
EIT will most likely run a high-cadence campaign while LASCO is
closed.
* The FOT will be performing tape recorder maintenance during the
week starting February 17 (impacts NRT availability).
* TRACE is in eclipse season, end of hard eclipse is expected on
February 8, atmospheric absorption will continue a few weeks
after that. See note under section 3c.
* MDI continuous contacts:
Jan 20-Feb 16 MDI best effort continuous contact period 2003 (27 days)
Feb 27-Mar 3 MDI 5-day continuous contact
* LASCO observations of Comet C/2002 X5 (Kudo-Fujikawa) from Saturday January
25 until Friday January 31. UVCS joins on January 27 & 28, TRACE joins on
January 28 (as on the calendar).
NOTE: During the Kudo-Fujikawa comet obsrvations, the regular LASCO
program will drop 1 C2 image per hour, and they will be in half
resolution, during this campaign. C3 will be at the usual cadence
(2/hour), times will be somewhat different, and one of the two will
be half res. This may also impact the generation of the real-time
gif/jpeg images (at worst, only the one full resolution C3 image per
hour will make it to the web pages). Some EIT 195 CME Watch images
will also have to be dropped during this campaign.
* EIT Bakeout scheduled for January 31 - February 3.
TRACE will be taking full disk mosaics.
NOTE: Start of bakeout may be delayed by up to 1.5 - 2 days depending
on the length of the comet campaign and the need to carry out pre-bake
calibrations. TRACE's full disk mosaics will be moved to overlap.
* The Mercury disk transit on May 7, 2003 will be visible from
SOHO. MDI will be doing observations during the transit, so we
cannot use the SSR. We will have the following coverage from DSN
(times are BOT/EOT):
23:15 - 05:40 UT
05:50 - 14:20 UT May be extended to 16:05 UT (pending)
(10:50 - 15:15 UT BACKUP D/L only station - still not requested by others)
16:25 - 23:35 UT Will start 20:30 if earlier pass is extended
So, we should have no problem having high rate/VC2 4 hours before
and after the Greatest Transit time. Expected duration of the
transit is about 5.5 hours.
We have asked for some more preliminary information from FDF before the
maneuver (e.g. approximate transit path), based on the current predictive
orbit. However, it will not be available until after February 3. In the
meantime, see http://sunearth.gsfc.nasa.gov/eclipse/OH/transit03.html
(note that this is as seen from Earth - e.g. time is shifted and minimum
separation is different).
We have also asked for a tabulation of the position vs time to be
calculated after the February 19 stationkeeping maneuver.
More details (copy of emails sent to the SPWG list on November 27)
at http://soho.nascom.nasa.gov/soc/mercury2003/transit-email.txt
Note from Rock Bush:
It is not too soon to start planning for the Mercury transit. It
would be helpful to provide Mercury contact times and path across
the solar disk from the SOHO perspective before the next SPWG.
In addition, preliminary observing plans should be provided from
all the instrument teams in order to better coordinate observations.
MDI is planning on taking a series of full disk continuum tuned
filtergrams during the entire transit in order to better determine
absolute spacecraft roll, MDI absolute plate scale and better
understand MDI image distortion. The primary remaining questions are
the precise observing program and the number of focus settings to
observe. High rate telemetry in VC2 is requested from 1 hour before
first contact to 1 hour after fourth contact.
* The ground-observable Venus disk transit on June 8, 2004 will be
a coronal transit as seen from SOHO.
* Submodes:
Submode 6 except for these submode 5 periods:
April 2 - 21/22 (approximately) for a SUMER mini-campaign
* Commanding outlook: See AOB section.
3. Priorities for the coming month & more (W06-W09; February 3 - March 2)
a) Joint observing plans and campaigns
* Unscheduled JOP163 Internetwork/Network Oscillations, CDS/MDI/TRACE,
POC: Dipankar Banerjee
This will not be given a date/time until after the meeting; From
a practical viewpoint, April will be the earliest possible time.
CDS could not yet comment on the JOP.
Note from MDI:
OK. MDI can support the JOP (if there are no conflicts with MDI
continuous contact periods) with high resolution magnetic, doppler and
filtergram measurements. The suggested MDI campaigns are: hr_ve_fe_me
- Three variable (mag, doppler, filtergram), high resolution, extract
campaign. FOV: 620"x310". hr_t2_ve_fe_me - Three variable, tracking,
high resolution, extract campaign. FOV: (closer to TRACE FOV)
420"x420". If target is not in the high resolution field of view, the
standard full disk magnetic/doppler program will be run. If there are
special DSN requirements, please request the time now.
* Mar 9-20 JOP162 Magnetic Field Evolution around Leading Sunspots,
15-23 UT, TRACE/Sac Peak ASP/MDI/CDS, POC: Ted Tarbell
Note: A very similar program has been run as campaigns #6630 and #6859
(Photospheric Magnetic Signatures Study).
Note from MDI:
OK. MDI can support the JOP with high resolution magnetic,
doppler and filtergram measurements. The suggested MDI campaigns are:
hr_ve_fe_me - Three variable (mag, doppler, filtergram), high
resolution, extract campaign. FOV: 620"x310". hr_t2_ve_fe_me - Three
variable, tracking, high resolution, extract campaign. FOV: (closer
to TRACE FOV) 420"x420". If target is not in the high resolution field
of view, the standard full disk magnetic/doppler program will be run.
* Week 05 JOP161 Test run (TBC), CDS/EIT/MDI/TRACE,
POC: Scott McIntosh
* Apr 7-16 JOP161 Comprehensive Footpoint Study,
SUMER/CDS/EIT/MDI/TRACE, POC: Scott McIntosh
CDS, EIT, TRACE, MDI agree to a test run (time TBD - early in 2003),
but MDI support for test run is not possible after January 20. The test
run can be done without special MDI support (using only MDI synoptic
program). Week 5 (Jan 27-Feb 02) has been suggested.
MDI High Rate coverage has been requested for the real campaign. Some
details in the JOP will be filled in, e.g: EIT & CDS observing details
(EIT program will be something other than Intercal 1 program). LASCO
observations may be impacted by EIT (both test and proper runs); they
agree.
Note from MDI:
OK. MDI can support the test run with synoptic Magnetograms.
MDI can support the JOP with 1 minute cadence, high resolution
magnetic, doppler and filtergram measurements. The suggested MDI
campaigns are: hr_ve_fe_me - Three variable (mag, doppler,
filtergram), high resolution, extract campaign. FOV: 620"x310".
hr_t2_ve_fe_me - Three variable, tracking, high resolution, extract
campaign. FOV: (closer to TRACE FOV) 420"x420". hr_me_ve - Two
variable (mag, doppler), high resolution, extract campaign. FOV:
620"x390". If target is not in the high resolution field of view, the
standard full disk magnetic/doppler program may be run. Further
discussion of FOV, variables and alternative FD campaigns can be
discusses at SPWG.
* Apr 21-May 4 JOP083 High Cadence Activity Studies and the Heating of
Coronal Loops, CDS/EIT/TRACE/MDI, POC: Jack Ireland and
Ineke De Moortel
Note from MDI:
OK. MDI can support the JOP (if there are no conflicts with MDI
continuous contact periods) with high resolution magnetic, doppler and
filtergram measurements. The suggested MD campaigns are: hr_ve_fe_me
- Three variable (mag, doppler, filtergram), high resolution, extract
campaign. FOV: 620"x310". hr_t2_ve_fe_me - Three variable, tracking,
high resolution, extract campaign. FOV: (closer to TRACE FOV)
420"x420". If target is not in the high resolution field of view, the
standard full disk magnetic/doppler program will be run.
Further discussion of timing and required observables can also be discussed
at the SPWG.
Continuing campaigns:
* JOP159 CME's in Lyman-alpha (#6870), SWAN/LASCO/EIT/UVCS*,
POC: Chris St Cyr, Eric Quemerais
Targets of opportunity for the whole period:
* JOP136/MMOP009 Default RHESSI collaboration (#6850)
* JOP153/MMOP003 Major Flare Alert (#6892)
Campaign number 6850 has been set aside for "individual instrument studies"
that select their AR target [partially] influenced by the RHESSI target. Note
that the RHESSI target will be observed by a significant number of ground
based observatories, so chances for serendipitous co-observations are larger
when selecting the RHESSI target.
b) Intercalibration activities
Last Intercal 1: January 9 [Week 2]
* Week 6/7 Intercal 1, CDS/EIT, POC: CDS/EIT Planners
EIT suggests Thursday February 6, CDS is fine any day except Monday
c) Individual instrument plans
(See the SOHO monthly calendar for weekly plans)
UVCS:
* Feb 21 UVCS 38 Aqr Star Observations
MDI:
* Jan 20-Feb 16 MDI best effort continuous contact period 2003
MDI will continue to run a full disk cropped dopplergram and
magnetogram campaign through Friday, 17-January-2003. Saturday,
18-January-2003, MDI will switch to a full disk AND high resolution
doppler campaign for the MDI Best Effort Month. They will likely stay
in this campaign for the next two weeks. This program is a full disk
dopplergram/high res extract dopplergram campaign. The high res field
will be run at the bottom portion of the high res field of view. The
field of view is ~620"x390" and, the lower left corner of the extract
will be located at x=-300", y=-188".
CDS:
See their request diary for details
(http://solg2.bnsc.rl.ac.uk/scientificops/request.shtml)
LASCO/EIT:
EIT Bakeout scheduled for January 31 - February 3.
NOTE: Start of bakeout may be delayed by up to 1.5 - 2 days depending
on the length of the comet campaign and the need to carry out pre-bake
calibrations. TRACE's full disk mosaics will be moved to overlap.
LASCO may be requested to support IPS measurements of slow solar wind in late
May and/or early June (TBC) with high cadence white-light measurements
(primarily C2). An EIT bakeout could be scheduled for this time to optimise
LASCO cadence. IPS teams are aware of expected SM5 periods and conflicts are
not expected
TRACE:
During TRACE eclipse season (started November 4, ends February 8),
TRACE does 3 loads per week and stay with one wavelength for an
extended period of time. No additional collaborations will be done
other than those previously agreed to. NOTE: This restriction ends
after February 8.
NOTE also 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.
4. AOB
* Next SPWG: Friday February 21 right after weekly meeting in the EOF
* 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.
* 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.
* Commanding outlook
- These times are subject to change
- More details available if wanted:
Week 5 - Jan 27 - Feb 2: Gap, then D27 on Monday and Tuesday. D27 in the
afternoon Wednesday, Thursday, Saturday. Downlink
only station in the morning followed by D27 on
Friday. Downlink only station all afternoon
Sunday.
Week 6 - Feb 3 - Feb 9: D27 in the afternoon, then downlink only station
on Monday. D27 most of Tuesday. Downlink only
station in the afternoon, then a gap, then D27 on
Wednesday. D27 in the afternoon on Thursday and
Sunday. Gap on Friday morning. Downlink only
station in the morning and early afternoon, then
D27 on Saturday.
Week 7 - Feb 10 - Feb 16 D27 in the afternoon on Monday, Tuesday, Saturday,
Sunday. Large gap in the afternoon, then D27 on
Wednesday. Downlink only station in the morning
on Thursday and all afternoon on Friday.
Week 8 - Feb 17 - Feb 23 D27 in the afternoon on Monday, Tuesday, Thursday,
Saturday, Sunday. Gaps on Monday and Friday.
Maneuvers on Wednesday.
Week 9 - Feb 24 - Mar 2: Afternoon gap, then D27 on Monday, Wednesday,
Saturday. D27 in the afternoons on Tuesday,
Thursday, Sunday. Downlink only station in the
afternoon on Friday.
SOHO SPWG Minutes