From: Goddard Space Flight Center
Posted: Monday, June 23, 2003
1. Announcements ---------------- * HGA Anomaly Update: Since resumption of the Z axis movements yesterday, we received the first pulse at the expected time, but two pulses expected after that have not arrived. Meanwhile, we have also learned that the antenna ground test by Saab-Ericsson showed that the center of the beam is not centered on the intended zero point of the mechanical coordinates. Thus, the conclusion from the 4 June HGA test is now somewhat in doubt - the expected beam position for the "motor OK" case can not be determined with sufficient precision to support the original conclusion. Nominal operations of the antenna will be continued. If we keep missing steps, another offpoint maneuver will be performed to determine the antenna movement since 4 June. This should provide a definitive discrimination between the "motor OK" and "TM OK" cases. The maneuver is tentatively being scheduled for Wednesday 18 June, with Thursday 19 June as a backup. We expect the maneuver to be similar to the last one, but somewhat shorter. 2. Operations Constraints ------------------------- * Commanding times for the week (note: some changes may occur on Wednesday and/or Thursday, if an offpoint maneuver is being performed). Monday - D66 until 17:20 UT then D27 starts at 19:15 UT. Tuesday - D54 until 17:20 UT then D27 starts at 18:15 UT. Wednesday - D27 until 21:30 UT then D46. Thursday - D66 until 17:30 UT then D27 until 21:30 UT then D46. Friday - D27 until 14:30 UT then good stations. Saturday - Commanding is good all day. Sunday - Commanding is good all day. 3. Coordinated Observations --------------------------- M Jun 16 (W25) T Jun 17 W Jun 18 Offpoint Maneuvers, TBC T Jun 19 F Jun 20 EIT Shutterless #11 Segment 1 (#6955), 17-19:40 UT EIT/CDS/MDI(TBC)/TRACE/SPIRIT, POC: Jean-Francois Hochedez (email@example.com) S Jun 21 S Jun 22 Other activities for Week 25: * Week 25 JOP136 Default RHESSI Collaborations (#6850), POC: Stein Haugan * Week 25 JOP159 CME's in Lyman-alpha (#6870), SWAN/LASCO/EIT POC: Chris St Cyr, Eric Quemerais * Jun 8-22 Spicules, Mottles and Jets (#6952), TRACE/La Palma SST/MDI/[CDS], 08-18 UT, POC: Bart DePontieu * Jun 14-15 UVCS Observations of Zeta Tau * Jun 14-17 Blinker Study (#6953), MDI(TBC)/La Palma DOT/CDS(TBC), 9-12 UT, POC: Hardi Peter * Jun 16-22 UVCS Streamer Study * Jun 18-23 MDI Continuous Contact Submodes: Submode 6 Planners for Week 25: CDS -- Ben Dobke MDI -- Hao Thai/Jeneen Sommers EIT -- Matt West SUMER -- not observing LASCO -- Ops Team UVCS -- Leonard Strachan TRACE -- Dick Shine Relevant Notes -------------- CDS: Blinker study support, usual weekly studies, EIT shutterless support on Friday. UVCS: Streamer study and synoptics. LASCO: C2/C3 synoptics, JOP159 Wednesday - Friday. EIT: 195 CME watch and synoptics, JOP159 Wednesday-Friday, shutterless on Friday. MDI: La Palma support, blinker study, EIT shutterless support on Friday. TRACE: La Palma support, EIT shutterless support on Friday.
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