SOHO WEEKLY PLANNING MEETING MINUTES For Week 21, May 20-26, 1996 Chair: Eliane Larduinat Notes: Laura Allen 1. ANNOUNCEMENTS None. 2. MONTHLY SCHEDULE UPDATE Due to the SPWG today, and the large amount of JOP002 planning it was decided to focus on only the coming week. 3. OPERATIONS CONSTRAINTS The DSN schedule for next week was sent by email and is also available on the WWW and in the KAPs. From the present DSN schedule, the start time for JOP002 is ~23:30 UT on Monday. MDI needs VC2 during the rolls of JOP002. After that, can go to VC3. MDI wants 3 hours of VC2 at beginning of continuous contact to realign. Wednesday, preparation for orbit trim. The exact time of the trim is still TBD. The estimated time is 20:30 UT on 22 May. MDI will do a jitter test around the momentum management preceeding the orbit adjust. The momentum management will last about 15 minutes and the orbit trim only a few minutes. One hour for both should be safe for planning purpose. Thursday, CELIAS needs FOT time for TSTOL procedures: software patches while in the orbit trim safe configuration. 4. COORDINATED OPERATIONS Timeline for next week: M May 20 (W21) JOP002: S/C 90 degrees roll (16.5 hours) T May 21 Continuation of JOP002 W May 22 Second momentum management Orbit correction burn Experiments recover from safe configuration T May 23 VLA, OVRO, KPNO, Yohkoh, SOHO Collaboration (M. Aschwanden) 14:00 UT - 24:00 UT F May 24 Start of 2 Months Continuous ; JOP018 (with Sac Peak/VIT); VLA, OVRO, KPNO, Yohkoh, SOHO S May 25 JOP018 (with Sac Peak/VIT) S May 26 JOP018 (with Sac Peak/VIT); VLA, OVRO, KPNO, Yohkoh, SOHO JOPs ----- JOP002 -- Temperature Gradient in a Coronal Hole JOP Leader and coordinator for week 21: Alan Gabriel Start time: May 20 ~23:30 UT Duration: 16.5 hours Participants: CDS, SUMER, UVCS, LASCO, EIT EIT needs a minimum of 10 minutes dwell at 45 degrees with NRT. Pointing accuracy is +/- 0.5 to 1.0 degree at 45 and 90 degrees. At the 90 degree dwell, FOT will need 10 minutes of SVM-Reserved time to dump the star sensor table to allow accurate attitude calculations by FDF. It would be better to do that during the short pass from 06:15 to 07:55 on May 21 to save some time. CDS needs 15.5 hours at 90 degrees to complete this JOP (needs to load tables). They requested that FOT wait for their go-ahead before starting the roll back around 15:05 om May 21. JOP018 -- Sunspot Velocity Field and Line Profilees Planned for May 24, 25 and 25 Coordinator: Paul Brekke (CDS) NRT Required? Duration: ~2 hours Participants: CDS, SUMER Need a sunspot do spectroscopy with CDS and SUMER. Will decide on exact location by May 23. - Collaborations VLA, OVRO, KPNO, Yohkoh, SOHO Collaboration on May 23,24, and 26 Local coordinator: Marcus Aschwanden. To be run between 14:00 UT - 24:00 UT EIT will participate CDS cannot participate on 23 May (will have their door closed). SUMER cannot participate before 21:00 UT on May 23. -XBP Campaign K.Harvey requests support for another Xray Bright Point Campaign on May 27-31. EIT was planning on running the XBP campaign next week with MDI's high resolution field .. a week earlier than what Karen wants. 5. WEEKLY SCIENCE TIMELINE No large command loads planned for next week. 6. AOB None.