SOHO Daily Meeting Minutes for Monday, 10 December 2001
ANNOUNCEMENTS
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* A rapid turn-off/turn-on sequence can be designed for use by the FOT, for
instruments that may require a quick power cycling at the Local Current
Limiter (LCL) level. We'd like to know if any team is interested in
such a procedure being available for their instrument. Current procedures
involve things that are more appropriate for intermediate-/long-term shutdowns,
like substitution heater changes etc.
* There are problems with DPS, so Quicklooks may be late or not coming
during overnight/weekend periods.
FOT REPORT
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Spacecraft Status: Nominal
Spacecraft Anomalies:
342/0924 CDS mnemoninc, CUVMCP, violated red low limits for
1 minute 45 seconds. CDS personnel notified. Impacts TBD.
Accomplished Activities:
DOY 341: VIRGO, SWAN, RSL, New control star, mag = 6.5, New
tracking star, mag = 7.1
DOY 342: VIRGO
DOY 343: VIRGO
Planned Activities: VIRGO, New tracking star, mag = 6.3
Upcoming Operations: Jan 2 ACU/CDMU Memory Dumps
Ground Anomalies:
342/2020 D27 lost uplink lock on spacecraft receiver 2,
cause unknown. Lost ability to command for five
minutes. DR #G100592.
343/1345 Late carrier up as D24 was using an incorrect
exciter frequency (receiver 1 vice receiver 2).
Commanding activities delayed 5 minutes.
DR #G100593.
343/1800 D46 required two sweeps in order to lock uplink on
spacecraft receiver 2, reason unknown. delayed
commanding activities 3 minutes.
344/0620 D66 was unable to establish a solid uplink becuase
of an incorrect command modulation index value.
Lost command ability for 1 hour 15 minutes. Lost 1
hour 23 minutes of potential MDI high-rate data.
Lost 1 hours 54 minutes of range data. DR #M100366.
344/0626 TGC failure at D66 delayed pass activities 14
minutes. DR #M100365.
SOLAR STATUS
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12/07 DOY 341 - 12/10 DOY 344
EIT daily On-Line Solar Status and observations:
http://umbra.nascom.nasa.gov/eit/plan/log_form20011210.html
LASCO daily On-Line Solar Status and observations:
http://lasco-www.nrl.navy.mil/observations/2001/Todays_obs.html
Web Page for Planning:
http://www.bbso.njit.edu/arm
INSTRUMENT STATUS
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CDS: Nominal. AR streamer study with UVCS and Yohkoh, instrument
monitoring studies. Tomorrow: AR streamer study with UVCS
and Yohkoh, polarity reversal monitoring study at the north pole.
UVCS: Nominal. AR streamer study on AR 9718 with CDS and Yohkoh and
mini-synoptic. Tomorrow: finish AR streamer study with CDS and
Yohkoh, begin star observations, and long synoptic.
LASCO: Nominal. C2/C3 synoptics.
EIT: Nominal. 195 Angstrom CME watch and synoptics, engineering today.
MDI: Nominal. Full disk magnetograms and dopplergrams.
TRACE: Nominal. Observing AR 9727.