FINAL MINUTES FOR SOHO 27 JUNE 2008 SPWG MEETING
1. Boundary conditions
a) Orbit, attitude and manoeuvres - SOHO is in upside down roll position (180 deg). - manoeuvres To the degree possible, manoeuvres take place during the last days of 34-m keyholes. Currently proposed or set manoeuvre dates are: Aug 19 (TBC) station-keeping, momentum management Aug 22 (TBC) roll Nov DD (TBC) station-keeping, momentum management, roll; tentative dates are Nov 11, 18 or 19 b) Communications with the spacecraft Graphical DSN schedule: http://soho.nascom.nasa.gov/soc/dsn/ Keyhole dates for the next 6 months (All available keyhole information is at or via http://soho.nascom.nasa.gov/soc/keyholes.html): * Aug 01-30 26m Keyhole * Aug 08-22 34m Keyhole * Nov 05-22 26m Keyhole * Nov 09-18 34m Keyhole - DSN D45 and D65 (34-m) antennae status D45 and D65 are currently down-link/telemetry-only, but are being upgraded with up-link/commanding capabilities. The estimated time for the upgrade to be operational is during the first half of July. - End-of-pass handling during MDI continuous contact periods 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. c) KNOWN submode (SM) dependent activities/submode changes: * TOO JOP153/MMOP003 Future Major Flare Watch (SM5 if SUMER observes target, SM6 otherwise) * Jun 19-Jul 3 SUMER observing (SM5) * Jul 23,30 EIT Shutterless #32 TBC (SM6) * Nov SUMER campaign TBD (SM5) The next submode change 5->6 is scheduled for Jun 19, 2008 at 15 UT. The next change 6->5 is scheduled for Jul 3 (TBC). For details on the Jun 23 to Jul 3 SUMER observations, see section 2a. SUMER campaign dates may overlap with keyholes. Such overlaps shall be scheduled only if periods of no SUMER data between passes are acceptable. 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. SUMER says there is no decision yet, but November campaign is unlikely to happen EIT Shutterless #32 times as follows: July 23, 2008: DSS-27 19:50-02:30 UT, runtime 21:00-23:50 UT (automation) July 30, 2008 DSS-27 14:40-21:40 UT, runtime 17:00-19:50 UT d) Instrument maintenance activities EIT bake-out periods will be during keyholes. Dates depend on August keyhole schedule. e) Others TRACE summer eclipse season began on 10 May 2008 and according to latest predicts 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. Attended automated daytime passes will begin during the week starting Mon 16 Jun. Unattended daytime automation will begin 1 October.
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. --> #Hinode-EIS, #RHESSI: changes, comments? * Jun 22-Jul 03 Polar Plume Observations (#7276), UVCS/SUMER, POC: Giannina Poletto SUMER campaign begins officially on June 23, but the detector will be powered on on June 19 after the submode change. The objective of the polar plume observations 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. * Jun 23-Jul 3 JOP 213 Chromospheric network structure and dynamics, SUMER/MDI/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. CDS is interested in participating --- requests to be informed of targets & times --> #Hinode-SOT: changes, comments? * Jun 23-Jul 3 SUMER observing See also section 1c. The June 2008 SUMER observation period will be of limited scale and scope, not a full-fledged campaign. SUMER will support or carry out the following observations: - Polar Plume observations with UVCS (see above) - JOP 213 (see above) - JOP 207 (see below) - JOP 208 (see below) - Lyman-alpha profile and center-to-limb variation (see below) Running of the other proposed JOPs (JOPs 210-212; see, e.g., http://sohowww.nascom.nasa.gov/operations/SPWG/spwg-20080523.html) in full remains TBD. Jun 23-Jul 3 JOP 207 Eruptive and quiescent prominences Atlas with SOHO and Hinode, CDS/SUMER/UVCS/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. SUMER also has plans for a dedicated observation "Lyman-alpha profile and center-to-limb variation". The aperture door will be used to partially vignette the incoming photon flux, thus avoiding detector saturation. This has never been tried before. MDI and TRACE have been contacted to support this special observation. The timing depends critically on the availability of NRT, since the operation (about 1 hour) has to be carried out interactively. Preferred dates would be 25 or 26 June. 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. At MDI's request the SOCs inquired about additional DSN coverage for Jun 25-26 (and possibly also for Jun 23 -- Jul 3). There is, however, no flexibility due to Phoenix along with three other Mars missions being in 90-day continuous coverage. CDS requests to be added to the mailing list, as all JOPs of interest to CDS, particularly to co-observe with Hinode. EIT is waiting for JOP requests. TRACE has received a request for JOP 208/209 and plans to support CDS has begun participating in JOP 207. SUMER says JOP207 is a TOO. No support requested for EIT. --> #Hinode-EIS, #Hinode-SOT, #Hinode-XRT: changes, comments? * Jul 9-13 MDI Continuous Contact Note "End-of-pass handling during MDI continuous contact periods" in section 1b. MDI has not gotten specific requests for this time period. MDI will do full disk, 1-min cadence magnetograms and dopplergrams unless there is an interesting target in the HRFOV. * Jul 23,30 EIT Shutterless #32 The DSN schedule for the shutterless dates is confirmed. EIT Shutterless #32 times as follows: July 23, 2008: DSS-27 19:50-02:30 UT, runtime 21:00-23:50 UT (automation) July 30, 2008 DSS-27 14:40-21:40 UT, runtime 17:00-19:50 UT * Sep 24-28 MDI Continuous Contact Note "End-of-pass handling during MDI continuous contact periods" in section 1b. We may do high resolution observations for Helioseismology. Observables will be high resolution magnetograms, dopplergrams and filtergrams at 1-min cadence. FOV is TBD. * Oct 15-19 MDI Continuous Contact Note "End-of-pass handling during MDI continuous contact periods" in section 1b. We may do high resolution observations for Helioseismology. Observables will be high resolution magnetograms, dopplergrams and filtergrams at 1-min cadence. FOV is TBD. * Nov TBD SUMER/Hinode campaign --> #Hinode: changes, comments? SUMER says there is no decision yet, but November campaign is unlikely to happen * Dec 10-14 MDI Continuous Contact Note "End-of-pass handling during MDI continuous contact periods" in section 1b. Standard full disk, 1-min cadence magnetograms and dopplergrams. b) Intercalibration activities Last ICAL was: Jun 9 ICALs are normally performed monthly. Below is a SOC proposal for ICAL weeks for the next six months. * 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 * Oct 6-10 ICAL01 (#7113), CDS/EIT/Hinode-EIS/STEREO * Nov 3-7 ICAL01 (#7113), CDS/EIT/Hinode-EIS/STEREO * Dec 1-5 ICAL01 (#7113), CDS/EIT/Hinode-EIS/STEREO Proposed compiled ICAL scheduling criteria, constraints and guidelines (see also campaign #7113): 1) EIT/CDS are the primary participating instruments 2) CDS: Hinode-EIS participation is extremely important and participation is to be attempted within the limitations of the constrained Hinode operations (see "FYI items" in section 3) 3) STEREO-EUVI observations are included when possible. ICALs are attempted to be scheduled not to coincide with STEREO manoeuvres or other interruptions in observations (see http://stereo-ssc.nascom.nasa.gov/plans.shtml). 4) EIT: ICALs OK at all other times except the weeks of shutterless 5) Dates, details and confirmation will be determined by the planners with support from the SOHO SOCs. --> #Hinode-EIS, #STEREO: changes, comments? CDS okay. If Hinode-EIS can suggest convenient date & time, CDS can usually accommodate. 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 down-link 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. UVCS: 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. EIT/LASCO: 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. SUMER: Next SUMER observation periods: June 22-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
* Tentative SPWG meeting times for next six months (only the next one will be decided in this meeting). Meetings take place as a baseline on Fridays after the daily and weekly meetings. Jul 25 Aug 29 Sep 26 Oct 24 Nov 21 Dec 19 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