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SPWG Minutes Friday, December 21, 2001

1. Review of action items

2. Boundary conditions

* Yohkoh is out of control. From Hugh S. Hudson: If Yohkoh does come back to life, it will take a while, but in the meantime I guess we should continue exchanging information about coordinated observations as usual. * CDROMs with LZ data taken up to 31 January 2002 will be produced. After that, distribution will be on-line only. * No maneuvers are scheduled for the current planning period, however we will need another (small) one before the 3-month continuous contact, some time in spring 2002. January 24 is kept as a placeholder, but the maneuver may take place between Feb 12 to Feb 23. * HESSI launch scheduled for January 24, 2002, having passed the launch readiness review. * MXUVI 171 304 LyA Irr Woods/Hassler rocket in February, details coming. * VAULT launch (JOP148) has been postponed until sometime in the first two weeks of March. * MSSTA-III EUV rocket launch has a tentative date: March 20, 2002. * TRACE is in eclipse season - currently doing AR with UV filters, moving back to 171 for polar crown filament studies, or when eclipse season ends. * Commanding outlook: See AOB section. * Submodes: Submode 6 for the foreseeable future. Plans for a JOP104 run April 8 to May 17 with SUMER in operation. Also plans for MEDOC #9 May 20-Jun 2. * MDI 5-day continuous: Jan 7-13 3-month after Feb 25, according to current knowledge * The MDI team is on a track to reduce the MDI shutter usage to half or less of present usage. See full message under AOB. In short - if you have projects that require high-cadence MDI support, now is a good time to ask, and make sure to make specific requests if you need MDI data. * EIT CalRoc launch shooting for the week of June 20, 2002. Would like to have it near a repeated offpoint maneuver. * EIT bakeout second weekend of January. * EIT Shutterless: January 17

3. JOPs status

JOP151 Active Region Streamer Study, UVCS/CDS/Yohkoh/EIT/MDI/LASCO, POC: Yuan-Kuen Ko.

4. Priorities for the coming month (W 1-5, December 31 - February 3)

a) Joint observing plans and campaigns * Dec 22-Jan 2 Active Region Variability Study (#6840), CDS/MDI, 22 hours/day * Jan 3-Jan 10 JOP151 Active Region Streamer Study (unless JOP106 is run) UVCS/CDS/EIT/MDI/LASCO/Yohkoh*, POC: Y.-K. Ko * Jan 6-10 Comet 96P/Machholz (#6841), LASCO/UVCS, POC: John Raymond UVCS observes Jan 8 only * Jan 10-13 Flare Observations, CDS/Lick, 04:00-10:00 UT, POC: Gerry Doyle NOTE: Verify times * Jan 17 EIT Shutterless, EIT/TRACE/CDS, 17-19:40 UT * Jan 22-Feb 3 JOP151 Active Region Streamer Study, UVCS/CDS/[Yohkoh]/EIT/MDI/LASCO, POC: Y.-K. Ko Target of opportunity: * Dec 24-Jan 10 JOP106/MMOP#011, UVCS The MMOP011 Sigmoidal active region study has been revived by the Max Millennium group (until HESSI launch). b) Individual instrument plans UVCS See SOHO monthly calendar for weekly plans CDS See their request diary for details (http://solg2.bnsc.rl.ac.uk/scientificops/request.shtml) MDI: Default plan is full disk, high resolution FOV if exceptional target. TRACE: Eclipse season. Expect simple plans, following active regions. Season ends mid-February LASCO: 2 color sequences and 1 pB daily in C3 for Comet 96P/Machholz c) Intercalibration activities * Week 03 Intercal 1, CDS/EIT, POC: Jack Ireland

5. Preview of future months

* See the Monthly Calendar at: http://sohowww.nascom.nasa.gov/soc/head_calendar.html

6. AOB

* Next SPWG: Friday 25 January, 2pm (TBC) * The MDI team is on a track to reduce the MDI shutter usage to half or less of present usage. to allow the instrument to be used for another 5 or more years. We expect to have a meeting to review shutter status and plan long-term operations in a few weeks. We are still determining what changes are practical, but one of the things being considered is elimination of the nominal 8-hour campaigns as much as possible, subject to compelling science arguments. So we want to give our colleagues a heads up that MDI may not provide very good collaborative support during the late summer and fall, although we hope to return to collaborative mode in some reduced level around the first of the year. In short - if you have projects that require high-cadence MDI support, now is a good time to ask! Also, if you need MDI data, make sure you request it specifically. * DSN support should be requested at least 6 months in advance. Keep this in mind for: ground-based collaborations that require MDI support, stellar observations that require NRT, etc. * Quick turn-off/turn-on sequence? * Commanding outlook These times are subject to change - more details available if wanted: Week 01 - Dec 31-Jan 06: Monday, Thursday, Friday, Saturday command late in the day, Tuesday - D27 early in the day then a gap then D46. Wednesday and Sunday command late on D27. Week 02 - Jan 07-Jan 13: Wednesday, Thursday, Saturday, Sunday have D27 all day. Monday and Tuesday command late on D27. Friday is good. Week 03 - Jan 14-Jan 20: Monday, Tuesday, Saturday and Sunday command on D27 all day. Wednesday command on D27 for most of the day. Thursday and Friday are good. Week 04 - Jan 21-Jan 27: Monday - command early on D27 then on D46 in the afternoon. Tuesday, Wednesday, Saturday and Sunday command on D27 all day. Thursday is good. Friday - command after 17 UT. Week 05 - Jan 28-Feb 03: Monday - command late. Tuesday, Wednesday, and Saturday command on D27 all day. Thursday - command early on a good station or later on D27. Friday - command late. Sunday is good.