SOHO SPWG Minutes
SPWG FINAL MINUTES
Friday 24 February 2006
1. Boundary conditions
- SOHO is up-side down until next roll. The next SK/MM will be on
March 7, the next 180 degree roll will be on March 15. The thruster
firings and roll are decoupled to have the roll as late as possible,
to decrease chances of bad telemetry during the keyhole.
- Graphical DSN schedule: http://soho.nascom.nasa.gov/soc/dsn/
- All available keyhole information (including March 2006 keyhole) is at
Note that there have been some major changes since last month.
- SOCs have received indications of Radio Frequency Interference (RFI)
events caused by MSG-1 and 2 on Mar 25-28 and Apr 3-6. Durations of
the order of 5 min maximum. It is possible, that SOHO will not
record during the RFIs due to the MDI Continuous Contact
- 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
- KNOWN submode dependent activities/submode changes:
* TOO JOP153/MMOP003 Future Major Flare Watch (SM5 if SUMER
observes target, SM6 otherwise)
* TOO JOP175 Extended Filaments at the Limb (see sect. 2a), SM6
* Feb 18-27 JOP175 Extended Filaments at the Limb (see sect. 2a), SM6
* Feb 22-Mar 21 26m Keyhole (Feb 28-16 34m Keyhole), SM5/6
* Feb 28 Submode change to Submode 5, 18:55 UT
* Mar 17 Submode change to Submode 6, 18:55 UT
* Mar 17-30 JOP175 Extended Filaments at the Limb (see sect. 2a), SM6 **
* Mar 22 Submode change to Submode 5, 19:40 UT
* Mar 23-Apr 4 SUMER mini-campaign, SM5
* Mar 29 Solar Eclipse, 08:34-11:48 UT, SM5
* Mar 31/Apr 4 Submode change to Submode 6
* Apr 12,19 EIT Shutterless #23, 18:00-20:40 UT, SM6
* May 27-Jun 14 26m Keyhole (May 31-Jun 11 34m Keyhole), SM5/6
* Jul 26,Aug 2 EIT Shutterless #24, SM6, TBC
* Aug 21-Sep 19 26m Keyhole (Aug 28-Sep 13 34m Keyhole), SM5/6
* Oct 18,25 EIT Shutterless #25, SM6, TBC
* Nov 1-Dec 15 SUMER Campaign, SM5, TBC
* Nov 24-Dec 11 26m Keyhole (Nov 27-Dec 08 34m Keyhole), SM5/6
** Note that we will be in submode 5 due to the keyhole until March
17 and going back again on March 22 for the SUMER campaign.
Some of the default SUMER campaign dates overlap with keyholes -
which is not a problem in itself (submode 5 will often be needed for
keyholes anyhow) as long as potential periods of no SUMER data
between passes can be accepted.
SUMER plans a compact campaign primarily conducted from MEDOC (with
some staffing at SOHO EOF as well) starting Mar 23 and ending Apr 4.
Will need EOF support during weekend Mar 25-26 for NRT from MEDOC.
Ending date could be as early as Mar 31, weekend is contingency.
SUMER will make a raster in the EIT FOV during the EIT shutterless
#23, segment 1 (April 12). Program will be loaded during the
mini-campaign and started either by time-tag or manually (need Chris
to press the button), to be decided later. SUMER contact: Maria
- EIT Bakeout/Other
* Feb 28-Mar 18 EIT bakeout
TRACE will NOT be taking Full-disk mosaics during March 1-3 due to
the TRACE annealing.
- TRACE hard eclipse period ended Feb 14. The TRACE annealing will
begin ~15 UT on 27 Feb and continue until 03 Mar.
--) #CDS, #EIT, #LASCO, #MDI, #SUMER, #UVCS, #TRACE - READ &
UNDERSTOOD (all of the above - additions/modifications welcome):
2. Priorities for the coming month and more
a) Joint observing plans and campaigns
* 2002/02/25-- JOP136 Default RHESSI Collaborations (#6850), POC: Tero Siili
* 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
* 2004/02/19-- JOP175 Extended Filaments at the Limb (#7135),
POC: Chris St Cyr (Chris.StCyr@nasa.gov)
* 2005/09/20-- JOP153/MMOP003 Future Major Flare Watch (#8006)
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 Å CME watch in submode 5/6,
except JOP175 getting half/full-res 304 Å 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. Major Flare Watches will be in full-res even if
it requires a submode change, unless the target is observed by
JOP175 is listed as a top-priority TOO for February 18-27 and March
17-30. UVCS will participate during all of the first period, and
during March 17-26.
The TRACE annealing will begin ~15 UT on 27 Feb and continue until
The question of whether or not to continue campaign #7033 (Network-
Internetwork Oscillations) has been brought up, and the issue of
how to list a possible "final, long run" has been raised. If that
run will involve a significant change to the existing campaign,
e.g. by including Solar-B instruments, it should be a separate
item (and the current campaign can be closed). If not, the campaign
can be continued until the final run has been done, to keep things
simple by using the existing campaign number.
--) #CDS, #EIT, #LASCO, #UVCS, #TRACE, #SUMER - changes?
* Feb 22-Mar 21 26m Keyhole (Feb 28-16 34m Keyhole)
* Feb 28-Mar 18 EIT bakeout
* Mar 17-30 JOP175 (#7135), Priority TOO, EIT/LASCO/TRACE/UVCS
We stay in submode 5 until March 17 due to the keyhole, and go back
to submode 5 on March 22 due to the SUMER mini-campaign. EIT
support with full-res 304 CME Watch is only possible in submode 6.
UVCS will participate March 17-26.
--) #EIT, #LASCO, #TRACE, #UVCS - changes?
* Mar 22-May 21 MDI 60-day Continuous Contact
Full disk Magnetograms/Dopplergrams.
The SOCs will request New Norcia coverage for gaps that fall within
the view of that station.
--) #MDI - changes?
* Mar 23-Apr 4 SUMER mini-campaign
See also section 1 for details:
- detector health check
- plume observations
- Jop 002
- AR loops (off limb)
SUMER contact will be Udo Schuehle/Klaus Wilhelm.
--) #SUMER - changes?
* Mar 24-26 Internetwork field/transition region, 09:00-11:00 UT,
SUMER/MDI/DOT, POC: Luca Teriaca.
MDI can support only with Full Disk Magnetogram data due to a 60-day
Continuous Contact/Helioseismology period.
--) #SUMER, #MDI - comments, changes?
* Mar 29 Solar Eclipse, 08:34-11:48 UT, SUMER/UVCS/TRACE/CDS(TBC),
POC: Alan Gabriel (email@example.com)
Solar Eclipse, 10:40 UT, EIT/TRACE/LASCO,
POC: Serge Koutchmy (firstname.lastname@example.org)
Solar Eclipse, 10:53-11 UT, TRACE/EIT,
SUMER has been requested to support ground based observations during
this eclipse, so we will be in submode 5 around this date - from
about March 23-April 4. The observations will be along the lines of
JOP002, but suggestions about a roll have been withdrawn, so an
updated (actually, new!) JOP description should be drawn up.
For eclipse details, see:
CDS support for Alan Gabriel's request is under consideration.
UVCS will participate for Mar. 27-31.
Serge Koutchmy sent an email on 16 November with requested
observations from TRACE, EIT, LASCO for the eclipse: One 304 image
at 10:40 UT +/- 2 min, and one 195 image as close as possible to
that, either before or after. Routine images taken hours before and
after will also be useful. LASCO images (near-simultaneous, within
+/- 10 min, and hours before/after) are also needed.
EIT has been asked by Jay Pasachoff for a synoptic set around 11:00
UT, as well as as frequent as possible synoptic sets (usual cadence)
+/-1 day around the time of eclipse, as provided in the past. While
they're enthusiastic about the science that SUMER will be doing
during the eclipse, they have some concern that EIT and LASCO may
not have enough bandwidth in submode 5 to meet the requests rigth
around the time(s) of totality. Kevin probably needs to make up a
plan before we can feel comfortable.
So far, nobody has requested being in record during any part of the
eclipse observations, and doing so would mean poking a hole in the
MDI 60-day continuous contact. It's a unique event, but nobody has
so far made a convincing argument that a "typical" (i.e. small)
dropout of data would ruin the entire observing sequence or
compromise a wider science goal (as is the case with
e.g. calibration flights). Data recovery is above 99% on average.
TRACE has been requested to support Pasachoff's study with
alternating 1600 and 171 images, 1 hour surrounding the observing
time. They have also been requested to support Koutchmy's study with
Ly alpha and 171 sets of full-limb pointings, and if possible,
off-limb wave phenomena.
--) #CDS, #SUMER, #TRACE, #EIT, #UVCS, #LASCO - changes?
* Apr Sounding Rocket Launch, EUNIS/EIT/CDS/MDI/TRACE,
POC: Jeff Brosius & Roger Thomas, TBC
--) Launch date unknown.
* Apr 11-26 JOP185 Solar fibrils: spectroscopy and tomography,
07:00 UT - TBC UT, [EIT/MDI/TRACE](TBC)/CDS/DOT/SST,
POC: Jan Rybak
Detailed JOP description is under preparation. Initial JOP outline
has been sent to the abovementioned SOHO/TRACE teams.
Due to the 60-day Continuous Contact MDI can only support with full
disk Magnetograms and Dopplergrams with 96 minute synoptic
Magnetograms and Continuum images.
Bernhard Fleck has offered to act as the deputy JOP leader for the
final planning and initial days of the first run.
--) #CDS, #EIT, #MDI, #TRACE - comments, replies?
* Apr 12,19 EIT Shutterless #23, 18:00-20:40 UT
SUMER plans to observe on April 12, with buffered observations in
CDS will participate.
TRACE will very likely participate.
MDI will support Shutterless #23 with Full Disk Magnetograms and
Dopplergrams along with 96 minute synoptic Magnetograms and
--) #EIT, #SUMER, #CDS, #TRACE, #MDI - changes?
* May 27-Jun 14 26m Keyhole (May 31-Jun 11 34m Keyhole)
* May 29-Jun 25 JOP178/JOP157 Filament and its environment, up to 10
days actual observing, POC: Brigitte Schmieder, TBC
Ten days of observing time at THEMIS has been applied for, during
May 29-Jun 25, Aug 21-Sep 24, or Oct 16-29. The most probable
observing dates are Sep 17-24. Note the overlap with the June and
--) We're awaiting further information about the time period.
* Jun 3-9 La Palma Observations, MDI/TRACE/La Palma, POC: Tom Berger, TBC
MDI has requested good DSN coverage for this time as well as the
sister run in October, and a September/October run for Bart
DePontieu. Support for the June run is unlikely due to the keyhole
TRACE will also support this observation.
--) #MDI - comments/changes?
* Jun 28-Jul 12 JOP171 Solar Network Variability and Dynamics, CDS/EIT/MDI/DOT,
POC: Peter Gomory
CDS has worked out the details with Peter already.
EIT sees no problems supporting the request.
MDI will support the request, tentatively taking 1-min cadence
high-res magnetograms and continuum images.
--) #CDS, #EIT, #MDI - comments/changes?
* Jul 12-16 MDI Continuous Contact
The default plan is Full Disk Magnetograms and Dopplergrams, but
it's subject to change based on solar activity and general requests
for MDI observations. We may continue with whatever we run for
--) #MDI - anything new or changed?
* Jul 26, Aug 2 EIT Shutterless #24, TBC
--) #EIT - changes?
b) Intercalibration activities
Last Intercal 1: February 1
W Feb 22 ICAL01 (#7113), 14 UT, CDS/EIT, POC: Peter Young & Joe Gurman
* Week 13 ICAL01 (#7113), CDS/EIT, TBC
--) #EIT, #CDS - leave to planners as usual?
c) Individual instrument plans
See section 2a for MDI continuous contact periods.
MDI may reduce the ALT cadence during Keyholes to be less than 15 ALT
magnetograms per day if the lack of high rate telemetry is such that
we will lose all or almost all of the 15 ALT Magnetograms each day.
The ALT cadence will be decided on an individual Keyhole basis and
even a daily basis during each Keyhole depending on the 70m antenna
availability at the time.
All requests for MDI support need to be made several months ahead of
time and sent to email@example.com. 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.
MDI is back in best focus for Full Disk observing.
--) #MDI - changes?
We have been using the LyA detector for some observations and will
keep planning so when appropriate.
For weekly plans, see the SOHO calendar and the UVCS planning page:
--) #UVCS - changes?
See their request diary for details:
A re-calibration of GIS (filament and raw data dumps) is under
--) #CDS - changes?
--) #EIT, #LASCO - comments, changes?
SUMER plans a compact campaign starting Mar 23 and ending Apr 4.
Ending date could be as early as Mar 31, weekend is contingency.
--) #SUMER - changes?
TRACE is in its normal operations mode until the next 'eclipse
season', which expected to start on 2006/doy275 and last through
NASA has announced that it plans to continue funding of TRACE
operations at close to the FY06 level through FY08, followed by a
significant ramping down of operations into FY09.
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.
--) #TRACE - any revision in light of the Senior Review results?
* Next SPWG:
F Mar 24 SPWG after Daily/Weekly Meetings
--) #EIT, #LASCO, #SUMER, #CDS, #UVCS, #MDI, #TRACE - either date ok?
The rest are FYI items:
* If anyone has projects that require high rate (i.e. 1 minute
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
* 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.