SPWG DRAFT MINUTES
Friday 26 May 2006
Last changed by T. Siili on 26 May 2006
1. Boundary conditions
a) Orbit, attitude and manoeuvres
- SOHO is currently right side up
- manoeuvres
Jun 6 roll, stationkeeping and momentum management
Sep 5 stationkeeping and momentum management; roll date
separate and TBC (timing TBC)
Dec 5 roll, stationkeeping and momentum management (timing TBC)
b) Communications with the spacecraft
- Graphical DSN schedule: http://soho.nascom.nasa.gov/soc/dsn/
* May 27-Jun 14 26 m Keyhole
2006/05/27-2006/06/01 ALL
2006/06/01-2006/06/02 VGMFL5
2006/06/02-2006/06/03 VGM
2006/06/03-2006/06/06 VGMFL5
2006/06/06-2006/06/07 VGM
2006/06/07-2006/06/10 VGMFL5
2006/06/10-2006/06/14 ALL
For details see below.
* May 31-Jun 11 34 m Keyhole
General outline see above. For details see below.
* Aug 21-Sep 19 26 m Keyhole
* Aug 28-Sep 13 34 m Keyhole
Note: the keyhole plans for the June and September keyholes will be
based on VGM-only or VGMFL5-only to reduce FOT manpower requirements
needed for complex operations during the keyhole. This will allow
the FOT personnel to devote more time on the development of future
more automated operations. The tradeoff is some less science
accomplished.
Note: outlook for the Sep keyhole is bleak due to severe contention
between several missions for DSN 70 m station resources. More
information on the availability of those resources for SOHO is
expected in early June.
* Nov 24-Dec 11 26 m keyhole
* Nov 27-Dec 8 34 m keyhole
All available keyhole information is at
http://soho.nascom.nasa.gov/soc/keyholes.html
c) 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
* May 27-Jun 14 26 m Keyhole (May 31-Jun 11 34 m Keyhole), SM5/6
* Jul 26,Aug 2 EIT Shutterless #24, SM6, TBC
* Aug 21-Sep 19 26 m Keyhole (Aug 28-Sep 13 34 m Keyhole), SM5/6
* Oct 18,25 EIT Shutterless #25, SM6, TBC
* Nov 1-Dec 15 SUMER Campaign, SM5, TBC
* Nov 8 Transit of Mercury, SM5/6
* Nov 24-Dec 11 26 m Keyhole (Nov 27-Dec 08 34 m Keyhole), SM5/6
- 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 an engineering campaign in November around the detector
A problem (there are indications that higher temperatures reverse
the defects). Details TBD. Limited time will also be given to
science operations with detector A. In case of no delays in the
Solar-B schedule we will extend the campaign and start with
supporting science observations. Details TBD.
- EIT will probably be supporting JOP 159 only in the week or two before
keyholes, at least as a test.
- According to EIT the Mercury transit observations can be carried out
in either submode 5 or 6. FDF has been contacted to get the
observational geometry and initial reply has been received (section
2).
- 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
operations.
d) Instrument maintenance activities
- EIT Bakeout, 2006 June keyhole
- Prebake cals, long set: 2006/05/26 DSS-46 21:15-05:15 UT
- In bake 2006/05/27 02:00 UT
- Out bake 2006/06/15 08:00 UT
- Post bake cal set 2006/06/15 DSS-27 16:00-00:40 UT
- Observations resume 6/16 01:00 UT
e) Others
- TRACE eclipses
TRACE is in its normal operations mode until the next 'eclipse
season', which is estimated to start on 2 Oct 2006 (doy 275) and
last through to 13 Apr 2007 (doy 103).
2. Priorities for the coming month and more
a) Joint observing plans and campaigns
Continuing 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),
EIT/TRACE/LASCO/UVCS,
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 CME watch in submode 5/6,
except JOP175 getting half/full-res 304 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
SUMER.
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. The INO study has been removed from the TRACE calendar
until an explicit request is made. SOC is contacting Scott McIntosh on
the subject of continuation of campaign #7033.
* May 19-Jun 02 JOP173 3D Structure and Dynamics of Sunspots (#7181),
THEMIS/TRACE/CDS/VTT,
POC: Karin Muglach (muglach(at)nrl.navy.mil)
* Jun 3-9 Facular Irradiance Characteristics, MDI/TRACE/SSO,
POC: Tom Berger, TBC
Obervation time 08-18 UTC. MDI will try to support this run, but due
to the keyhole support will be limited.
TRACE will support this observation and a program has been defined.
* Jun 8-18 Ulysses-SOHO quadrature observations, UVCS/Ulysses,
POC: Giannina Poletto
UVCS team is looking into the possibility of starting the quadrature
observations earlier than Jun 12. Since part of this campaign is
during the June keyhole, as much data coverage as possible for UVCS
is preferred. See also section 1b.
* Jun 28-Jul 12 JOP171 Solar Network Variability and Dynamics,
CDS/EIT/MDI/TRACE/DOT, POC: Peter Gomory
CDS has worked out the details with Peter already.
EIT sees no problems supporting the request.
MDI will likely support the request, tentatively taking 1-min cadence
high-res magnetograms, dopplergrams and filtergrams.
TRACE will support this observation and a program has been defined.
* Jul 12-16 MDI Continuous Contact
The default plan is high resolution magnetograms, dopplergrams and
filtergrams, but it's subject to change based on solar activity and
general requests for MDI observations. We may continue with
whatever we run for JOP171.
* Jul 13-Aug 19 JOP186 Atmospheric Seismology, CDS/EIT/MDI/TRACE/DST,
POC: Mike Marsh
Proposed observing schedule: 2-week period between Jul 13-Aug
19. TBC - SOC are confirming the timing of the period.
EIT will run CME watch in 171 to support.
MDI will try to do 1-min cadence, high-resolution magnetograms,
dopplergrams and filtergrams if target is within the high-resolution
field-of-view. Otherwise, 1-min full-disk magnetograms and dopplergrams.
MDI has also received a request for high-resolution magnetograms and
continuum images from Vicente Domingo (a coordination with SST) for 27
July through 08 August. MDI will try to support both studies, but might
stick with high resolution for the SST coordination even if JOP186
requests full-disk magnetograms.
TRACE has a defined program.
CDS is negotiating study duration and other details.
* Jul 22 Stereo Launch, TBC
* Jul 26, Aug 2 EIT Shutterless #24, TBC
Wednesday July 26, 2006 DSS-27 18:00-20:40 UT
Wednesday August 2, 2006 DSS-27 18:00-20:40 UT
* Jul 27-Aug 08 La Palma observations, Small magnetic features and their
radiative counterparts, MDI/SST, POC: Vicente Domingo
See above response for JOP186. MDI will coordinate observations for both
studies. At MDI's request improved DSN coverage has also been requested
for 07:30-20:00 UT each day. The outcome of the request is TBD.
* Aug 16-20 MDI Continuous Contact
The default plan is high-resolution magnetograms and dopplergrams.
* Aug 25-Sep 3 JOP178/JOP157 Filament and its Environment,
MDI/CDS/EIT/TRACE/THEMIS/GBOs,
POC: Brigitte Schmieder,TBC
Overlaps with the September keyhole. MDI will try to support this
for the first couple of days, but after that, no support is
guaranteed.
EIT will run CME watch in 304 August 25 - start of bakeout (TBD).
TRACE will support.
* Sep 23 Solar B launch, TBC
* Sep 27-Oct 6 La Palma observations, Propagation of low frequency
waves & spicule formation, MDI/TRACE/SSO,
POC: Bart DePontieu
MDI has requested extra DSN coverage for 08-18 UTC. Default plan is
high resolution magnetograms, dopplergrams and filtergrams (or some
combination of the three).
TRACE is supporting this request (TBC).
* Oct 11-15 MDI Continuous Contact
No plans yet, default plan is full-disk magnetograms and
dopplergrams.
* Oct 18,25 EIT Shutterless #25, TBC
Shutterless #25 still TBC. DSN schedule for SOHO is still in works for
this period.
* Oct 24 Dual sounding rocket launch for CELIAS/SEM, TIMED/SEE
and SDO/EVE cross-calibration, CELIAS/TRACE/TIMED/SDO,
POC: Andrew Jones, TBC
This is an expanded repeat of 2005 Aug CELIAS/SEM calibration flight.
Exact launch time is TBD, but most likely it will be 1720-2020 UTC. The
exact timing is dependent on the TIMED orbit, and that will not be
finally determined until about 8-10 weeks before launch. Backup launch
date is between 7-27 Feb 2007. Request is for going to record for
approximately 10 min even if SOHO is in contact. MDI is OK with going to
record for 10 min.
TRACE would like to participate and has contacted the POC.
CDS would like to know the details of the calibration rocket instrument
(wavelengths, field of view, etc.). Will join if useful for CDS
calibration. SOC has requested and obtained more detailed information on
the payloads, it (or a link thereto) will be disseminated to supporting
instrument teams probably by early June.
* Oct 25-Nov 2 Facular Irradiance Characteristics: Sunspot Penumbral
Filament and/or Light-Bridge Dynamics, MDI/TRACE/SSO,
POC: Tom Berger, TBC
MDI has requested extra DSN coverage for 08-18 UTC. Default plan is
high resolution magnetograms, dopplergrams and filtergrams (or some
combination of the three).
TRACE supports this request.
* Nov 1-Dec 15 SUMER Campaign
See section 1c.
* Nov 8 Mercury Transit
SOHO visibility information received from FDF: "The Mercury transit
in November will be seen by SOHO. The angular radius of the Sun as
seen from SOHO will be 0.27137 deg, the lowest SOHO/Sun/Mercury angle
will be 0.1153 deg. The transit midpoint will occur on
20061108.223648.696 and the transit will be ~5 h, starting ~2.5 h
before the midpoint and ending ~2.5 h after the midpoint. FDF is
currently refining the duration and will provide a final analysis
within the next couple of weeks. Please note that all the above
information is from the aspect as seen from SOHO."
For summary information on the view from Earth, see
http://sunearth.gsfc.nasa.gov/eclipse/OH/image1/TM2006Nov08-Fig1.GIF.
EIT will observe the transit.
LASCO to observe Mercury through C3 and C2 fields. TBC.
MDI can observe the transit and requests SOHO not to be in record.
TRACE will be supporting with observation for Jay Pasachoff. The
transit occurs, however, during TRACE's eclipse season (see section
1e), hence support will depend on the exact timing and possible
coincidence of the transit and a TRACE eclipse.
CDS will consider transit observations.
The SOCs have contacted to DSN to ensure that SOHO is in contact during
the transit, i.e., that SOHO has a baseline and backup DSN stations
available.
* Nov 8-12 MDI Continuous Contact
Default plan is 1-min cadence, full disk magnetograms and dopplergrams.
b) Intercalibration activities
Last Intercal 1: 25 May 2006
- Week 25 ICAL01 (#7113), CDS/EIT, TBC
Details and confirmation will be determined by the planners.
Future ICALs are TBD. EIT: ICALs are OK except during the weeks of
shutterless or of the Mercury transit.
c) Individual instrument plans
MDI:
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 70 m antenna
availability at the time.
All requests for MDI support need to be made several months ahead of
time and sent to mdi-ops(at)mdisas.nascom.nasa.gov. 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 and may switch to
better high-resolution observation focus after the June keyhole, in
preparation for late summer/early fall timeframe requests for high-res
observations.
UVCS:
We have been using the LyA detector for some observations and will
keep planning so when appropriate.
UVCS will recover from the keyhole on June 7.
Other observations in June are:
June 15 Helium focusing cone observations
June 14-16 Annual Observations of Zeta Tau
June 19-July 2 North Polar Coronal Hole Study
For weekly plans, see the SOHO calendar and the UVCS planning page:
http://cfa-www.harvard.edu/uvcs/observations/obst.html
CDS:
See their request diary for details:
http://solar.bnsc.rl.ac.uk/scientificops/request.shtml
LASCO/EIT:
LASCO reduced exposure for Mercury pre and post the transit. TBC.
SUMER:
See section 1c.
TRACE:
TRACE is in its normal operations mode until the next 'eclipse
season' (for estimated dates see section 1e).
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.
3. AOB
* Next SPWG:
Fri June 23 after the Daily/Weekly Meetings.
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
planned.
* 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.
* Solar-B launch is currently scheduled for 23 Sep 2006. Science
observations (including some MDI, TRACE and possibly STEREO
collaborations) are tentatively scheduled to begin approximately 45 d
thereafter. Spacecraft and launch site scheduling issues may push the
launch from Sep to Nov-Dec time frame.
* STEREO launch is currently scheduled for 22 Jul 2006. Coordinated
observations between Stereo and SOHO seem feasible approximately 120 d
after Stereo launch (TBC). Information will be provided as soon as it
becomes available. Simon Plunkett at NRL should be the contact for
STEREO JOPs; the other three instruments are pretty much on or off
only.
* Future Mercury and Venus transits: SOC is requesting the FDF to
provide estimates and data for not only disk, but also for coronal
transits. For this purpose FDF needs a criterion (radial/angular
distance from Solar disk centre) to define the transits. Instrument
teams are requested to provide SOC with information on what is a
reasonable criterion for each instrument.