OPERATIONS
Science Operations
FINAL MINUTES FOR SOHO 2 May 2008 SPWG MEETING
1. Boundary conditions
a) Orbit, attitude and manoeuvres
- SOHO is in right side up roll position (0 deg).
- manoeuvres
To the degree possible, manoeuvres take place during the last days of
34-m keyholes. Currently proposed or set manoeuvre dates are:
May 19 (TBC) station-keeping, momentum management, roll
Aug 19 (TBC) station-keeping, momentum management
Aug 22 (TBC) roll
b) Communications with the spacecraft
Graphical DSN schedule: http://soho.nascom.nasa.gov/soc/dsn/
Keyhole dates for the next 6 months:
* May 7-25 26 m keyhole
* May 11-21 34 m keyhole
* Aug 01-30 26m Keyhole
* Aug 08-22 34m Keyhole
- The need and approach to reduce FOT manpower requirements needed for
complex operations during the keyhole remains in effect until further
notice.
- All available keyhole information is at
http://soho.nascom.nasa.gov/soc/keyholes.html. Direct link to the list of
estimated dates for future keyholes is
http://sohowww.nascom.nasa.gov/soc/keyholes.txt.
- DSN D45 and D65 (34-m) antennae status
D45 and D65 have been and currently remain downlink/telemetry-only, but
are in the process of being upgraded with uplink/commanding capabilities.
The estimated time for the transmitters to change to operational status
is end of May.
c) KNOWN submode (SM) dependent activities/submode changes:
* TOO JOP153/MMOP003 Future Major Flare Watch (SM5 if SUMER
observes target, SM6 otherwise)
* Jun 23-Jul 3 SUMER observing TBC (SM5)
* Jul 23,30 EIT Shutterless #32 TBC (SM6)
* Nov SUMER campaign TBD (SM5)
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.
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.
The Jun 23 to Jul 3 SUMER observations are in support of JOP 213 (see
also section 2a) and in coordination with UVCS.
d) Instrument maintenance activities
EIT bakeout periods will be during keyholes. Next bakeout dates are:
Friday May 16 pass #29 EIT in bake ~18:00 UT. If problems with that pass
we will fall back to pass #30 and bake will begin ~00:00 UT.
Thursday May 22 CCD bake ends from plan at 05:00 UT. EIT resumes observing
on pass #48 ~16:00. If problems with post cals or the pass, fall back to
pass #49 and EIT will resume ~00:00 UT.
e) Others
TRACE summer eclipse season begins on 10 May 2008.
According to latest predicts TRACE summer eclipse season will end on 22
Jul 2008. The next eclipse season will begin on 10 Sep 2008. There is no
predicted end for that eclipse season
Unattended automated night passes for SOHO began October 6 2007.
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
* 2003/05/13-- Default CDS Co-observations with TRACE (#6950)
* 2005/09/20-- JOP153/MMOP003 Future Major Flare Watch (#8008)
* 2007/03/20-- Default CDS/Hinode-EIS co-observations (#7200)
Campaign #6850 is for "individual instrument studies" selecting an active
region target [partially] influenced by the Max Millennium target
selection to maximise chances of serendipitous co-observations.
EIT supports all with half/full-res 195 A CME watch in submode 5/6. It is
clear that STEREO-EUVI provides adequate "context" information for RHESSI
flare observations. Routine EIT submode and resolution switches are
probably no longer needed.
* Dec 2-May 28 Exceptional Ulysses Quadrature
The Ulysses mission is expected to end in early June 2008.
* Mar 3-May 4 MDI 60-day Continuous Contact
The default observing sequence will be 1 min cadence, full disk
Magnetograms and Dopplergrams along with our usual 96 min synoptic
Magnetograms and synoptic Continuum images when in high rate.
To avoid problems with transmitter masks at the end of passes during MDI
continuous, DSN has requested we bring the carrier down 30 min before the
end of pass. As a result, the last 30 min of all MDI continuous contacts
will be TM only. For ranging passes, the spacecraft will be transitioned
to record ~1 h before the end of the pass. The station will drop the
carrier and re-sweep into receiver 2. The spacecraft will then be
transitioned back to VC2 and VC3.
* May 10-25 JOP 157 Emerging Flux in Active Region (BP) or in Coronal
Hole (Jet) (#7274), EIT/CDS/MDI/Hinode/TRACE/THEMIS,
POC: Brigitte Schmieder
EIT supports JOP 157 using the 195 A filter. EIT goes into bakeout on May
16 (see section 1d above), hence the support is limited to May 10-16.
MDI will support JOP157 with as many full disk magnetograms as possible
during the keyhole. May 16, 19, 20 and 21 are particularly bad days ---
we might only get 2 synoptic magnetograms. Daily information on
magnetograms obtained can be found here:
http://mdisas.nascom.nasa.gov/coordination.txt
CDS will support JOP 157 as the keyhole schedule allows.
* May 10-25 JOP 178 Filament and its Environment (#7275),
EIT/CDS/MDI/Hinode/TRACE/THEMIS,
POC: Sanjay Gosain
Target-of-opportunity JOP in conjunction with the JOP 157; primarily for
May 20-25.
EIT: same as above for JOP 157.
MDI: same as above for JOP 157.
CDS will support JOP 178 as the keyhole schedule allows.
* Jun 11-15 MDI Continuous Contact
MDI is willing to do high resolution observations during this CC period.
Specifically, doing another Helioseismology study with Hinode would be
ideal. Observing campaigns suggested for HR Helioseismology studies are
hr_ve_fe_me (620"x310" FOV) or hr_t2_ve_fe_me (420"x420" FOV) in
non-track mode. Those interested, please request specific observations
about 1 month ahead of time. Due to commanding constraints for MDI, we'd
like to plan our observations ASAP.
MDI still plans on reserving the June and July 5-day Continuous Contacts
for HR observations, but no specific requests for collaborations have
been received. The default plan for June will be high resolution, 1 min
cadence filtergrams, dopplergrams and magnetograms.
To avoid problems with transmitter masks at the end of passes during MDI
continuous, DSN has requested we bring the carrier down 30 min before the
end of pass. As a result, the last 30 min of all MDI continuous contacts
will be TM only. For ranging passes, the spacecraft will be transitioned
to record ~1 h before the end of the pass. The station will drop the
carrier and re-sweep into receiver 2. The spacecraft will then be
transitioned back to VC2 and VC3.
MDI has not gotten any specific requests for this particular 5 day CC,
so, we may just revert to full disk magnetograms and dopplergrams unless
there are good active regions in the MDI HRFOV during that 5 day period.
* Jun 23-Jul 3 JOP 213 Chromospheric network structure and dynamics,
SUMER/Hinode-SOT/SST/TIP II/ZIMPOL II,
POC: Anna Pietarila
For details see the JOP 213 description at URL
http://sohowww.nascom.nasa.gov/soc/JOPs/jop213.txt.
SUMER will support. See also below "SUMER observing".
MDI has been asked to support JOP213 with HR magnetograms. MDI will
support this JOP as well as possible with the available high rate data.
MDI has been informed of the change in dates.
* Jun 23-Jul 3 SUMER observing
In addition to supporting JOP 213, SUMER will carry out coordinated
observations with UVCS.
SUMER proposes 19 Jun and 4 Jul as submode change dates.
The SUMER/Hinode campaign originally scheduled for Apr 2008 is postponed
until further notice. The campaign will be structured as multiple JOPs
in the same fashion as the 2006 SUMER campaigns have been.
The June 2008 SUMER observation period will be of limited scale and
scope, not a full-fledged campaign. Some of the JOPs outlined below may
also be tested during the June observation period, but running them "in
full" remains TBD.
Currently submitted JOP/HOP proposals are (timings remain TBD):
Timing TBD JOP 207 Eruptive and quiescent prominences Atlas with
SOHO and Hinode,
CDS/SUMER/Hinode-EIS/Hinode-SOT/Hinode-XRT ,
POC: Susanna Parenti.
Timing TBD.
Jun 23-Jul 3 JOP 208 Relationship between movements of magnetic
features and mass outflow in funnels,
MDI/SUMER/Hinode-EIS/Hinode-SOT/Hinode-XRT/TRACE,
POC: Hui Tian.
Timing TBD JOP 210 Checking the possible drives of solar wind origin
in the coronal hole,
SUMER/Hinode-EIS/Hinode-SOT/Hinode-XRT (all TBC),
POC: Hui Tian.
Timing TBD.
Timing TBD JOP 211 How does the solar wind originate from the
quiet-Sun region,
SUMER/Hinode-EIS/Hinode-SOT/Hinode-XRT (all TBC),
POC: Hui Tian.
Timing TBD.
Timing TBD JOP 212 Connection between UV explosive event and
magnetic cancellation,
SUMER/Hinode-EIS/Hinode-SOT/Hinode-XRT,
POC: Hui Tian.
Timing TBD.
Only JOP confimed to run is JOP 208, JOP 209 will not be run during this
period. Confirmations on the running of the other JOPs (207, 210-212)
have been requested by the SOCs.
MDI can support JOPs 208 and 209 to as well as it is able depending on
high rate telemetry availability. Probable forms of support are high
resolution magnetograms with full disk as an alternative. MDI has
contacted the JOP leaders about the need to coordinate MDI observations
for each day.
From June 23 to July 3 UVCS and SUMER will be coordinating targets for a
campaign titled Polar Plume Observations. The objective is twofold:
1) infer the outflow speed wind profile in plume/interplume regions,
2) characterize the evolution in time of the morphological/physical
properties of plumes.
* Jul 9-13 MDI Continuous Contact
MDI is willing to do high resolution observations during this CC period.
Specifically, doing another Helioseismology study with Hinode would be
ideal. Observing campaigns suggested for HR Helioseismology studies are
hr_ve_fe_me (620"x310" FOV) or hr_t2_ve_fe_me (420"x420" FOV) in
non-track mode. Those interested, please request specific observations
about 1 month ahead of time. Due to commanding constraints for MDI, we'd
like to plan our observations ASAP.
MDI still plans on reserving the June and July 5-day Continuous Contacts
for HR observations, but no specific requests for collaborations have
been received. The default plan for June will be high resolution, 1 min
cadence filtergrams, dopplergrams and magnetograms.
To avoid problems with transmitter masks at the end of passes during MDI
continuous, DSN has requested we bring the carrier down 30 min before the
end of pass. As a result, the last 30 min of all MDI continuous contacts
will be TM only. For ranging passes, the spacecraft will be transitioned
to record ~1 h before the end of the pass. The station will drop the
carrier and re-sweep into receiver 2. The spacecraft will then be
transitioned back to VC2 and VC3.
MDI has not gotten specific requests for this time period, so we might
just do full disk magnetograms and dopplergrams unless there are active
regions in the HRFOV.
* Jul 23,30 EIT Shutterless #32
Times remain TBD.
* Sep 24-28 MDI Continuous Contact
The default observing sequence will be full disk, 1 min cadence
Magnetograms and Dopplergrams in addition to our 96 min synoptic
Magnetograms and Continuum images (when in high rate).
To avoid problems with transmitter masks at the end of passes during MDI
continuous, DSN has requested we bring the carrier down 30 min before the
end of pass. As a result, the last 30 min of all MDI continuous contacts
will be TM only. For ranging passes, the spacecraft will be transitioned
to record ~1 h before the end of the pass. The station will drop the
carrier and re-sweep into receiver 2. The spacecraft will then be
transitioned back to VC2 and VC3.
* Oct 15-19 MDI Continuous Contact
The default observing sequence will be full disk, 1 min cadence
Magnetograms and Dopplergrams in addition to our 96 min synoptic
Magnetograms and Continuum images (when in high rate).
To avoid problems with transmitter masks at the end of passes during MDI
continuous, DSN has requested we bring the carrier down 30 min before the
end of pass. As a result, the last 30 min of all MDI continuous contacts
will be TM only. For ranging passes, the spacecraft will be transitioned
to record ~1 h before the end of the pass. The station will drop the
carrier and re-sweep into receiver 2. The spacecraft will then be
transitioned back to VC2 and VC3.
* Nov TBD SUMER/Hinode campaign
b) Intercalibration activities
Last Intercal was: Apr 22
ICALs are normally performed monthly. Below is a SOC proposal for ICAL
weeks for the next six months.
* May 5-9 ICAL01 (#7113), CDS/EIT/Hinode-EIS/STEREO
* Jun 2-6 ICAL01 (#7113), CDS/EIT/Hinode-EIS/STEREO
* Jun 30-Jul 3 ICAL01 (#7113), CDS/EIT/Hinode-EIS/STEREO
* Aug 4-8 ICAL01 (#7113), CDS/EIT/Hinode-EIS/STEREO
* Sep 1-5 ICAL01 (#7113), CDS/EIT/Hinode-EIS/STEREO
CDS views Hinode-EIS participation as extremely important. STEREO-EUVI
observations might also be used, but ICALs need to be scheduled not to
coincide with STEREO manoeuvres or other interruptions in observations
(see http://stereo-ssc.nascom.nasa.gov/plans.shtml). EIS and Stereo have
been added to the Campaign #7113 description.
Dates, details and confirmation will be determined by the planners.
EIT: ICALs are OK except (usually) during the weeks of shutterless ---
whenever CDS prefers.
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. MDI may also downlink select magnetograms in the 5 kbps
telemetry if no 70 m passes are available at least every 2 days for Mag
dump in the 160 kbps telemetry.
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 in Focus 5 for best focus for FD observing and will stay there at
least until May 2008.
UVCS:
UVCS is scheduled to enter Keyhole Safe configuration on 8 May and
Keyhole Recovery is targeted for 21 - 23 May TBC.
For weekly plans, see the SOHO calendar and the UVCS planning page:
http://www.cfa.harvard.edu/uvcs/observations/obst.html.
CDS:
For details see http://solar.bnsc.rl.ac.uk/scientificops/request.shtml.
LASCO/EIT:
EIT: 195 A CME watch plus synoptics at 6-hour cadence, as usual. Full-res
CME watch whenever we're in submode 6. Hope never to change until the
Bogart mission.
LASCO continues the C2 pB program at 6 h cadence till Apr 2008.
POC: Angelos Vourlidas.
SUMER:
Next SUMER observation periods:
June 23-July 3
Nov (timing TBD)
See section 2a for details.
TRACE:
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.
For TRACE summer eclipse season see section 1e.
3. Any other business
* Next SPWG:
Friday May 23 after daily & weekly meetings.
The rest are FYI items:
* Hinode is currently experiencing technical difficulties that have
resulted in a reduction in the rate at which scientific data can be
transmitted to the ground from the on-board recorder. According to the
Hinode Science Working Group "The problem will have a significant impact
on how the Hinode mission is operated." For further details see
http://spd.aas.org/SolarNews/archive/news.html#section1.
* In the future SOHO's DSN contacts will grow shorter as we lose 26-m
antenna support and other, new missions get higher priority. The
instrument teams are therefore requested to look at the NRT commanding
that is done (especially for emergencies and recoveries) and see what can
be converted into TSTOLs that the FOT can run (even without explicit
instrument or SOC direction).
* MDI high-rate support requests: no change, see URL
http://sohowww.nascom.nasa.gov/operations/SPWG/spwg-20080118.html
* DSN support requests: preferably 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.
* Future Mercury and Venus transits: no change, see URL
http://sohowww.nascom.nasa.gov/operations/SPWG/spwg-20080118.html
* Hinode operational and planning information and guidelines: no change,
see URL http://sohowww.nascom.nasa.gov/operations/SPWG/spwg-20080118.html
and http://sohowww.nascom.nasa.gov/soc/JOPs/jop-submit.html
* STEREO operational and planning information: no change, see URL
http://sohowww.nascom.nasa.gov/operations/SPWG/spwg-20080118.html
* The SOHO JOP/ICAL database and the web pages are now the Solar JOP/ICAL
database and web pages. This is due to anticipated increased
contributions by and collaborations as well as intercalibrations with
STEREO and Hinode.
* New JOP vs. modified existing JOP rules-of-thumb: no change, see URL
http://sohowww.nascom.nasa.gov/operations/SPWG/spwg-20080118.html
* SOHO calendar email notifications: no change, see URL
http://sohowww.nascom.nasa.gov/operations/SPWG/spwg-20080118.html
