STEREO Weekly Meeting Minutes for 2007-12-11  (Week 50)


ANNOUNCEMENTS
-------------

* The Dec. 25 operations telecon has been canceled.
  The Jan. 1 telecon is rescheduled to Jan. 2, at the ordinary time.


INSTRUMENT AND SPACECRAFT STATUS
--------------------------------

* All subsystems on both spacecraft are nominal, except that the Ahead
  spacecraft is currently operating on IMU #2.


DISCUSSION AND OPERATIONS CONSTRAINTS
-------------------------------------

Week 49 (last week)

* The average daily downlink was 6.6 gigabits for Ahead and 6.7 gigabits
  for Behind.

* There were two Behind ground system anomalies, on days 338 and 339,
  both on Station 45. The 339 anomaly was due to a  transmitter tripping
  off line.  These anomalies did not lead to any data or commanding
  losses.

* On Day 339 the Behind command modulation was turned on late

* On Day 340 PLASTIC MCP voltages were adjusted on Behind.

Week 50 (this week)

* Tomorrow (Day 346) JPL will perform a link automatic switch-over test
  during Behind track. This will interrupt real time commanding, but it
  should be possible to work around this.

* Thursday (Day 347) - Copying over G&C parameters from RAM to EEPROM on
  both spacecraft


Week 51 (next week)

* There will be a momentum dump on Ahead on Thursday, day 340 (Dec 20),
  at 14:00 UT

Week 52 and 53

* Staffing will be arranged on Dec. 25 and Jan. 1 so that more
  operations staff can take the day off. As a result there will be some
  extra long breaks between passes, although they will still meet
  requirements.

  In general the MOC requests that activities be kept to a minimum at
  during the holidays. Please perform any activities before hand or,
  even better, afterwards.

Other

* On Jan. 3 There will be a SECCHI step calibration on Ahead. This is
  near the time of the Ahead aphelion on Jan. 6. A SECCHI step
  calibration is tentatively scheduled for Behind on  Day 50 near its
  perihelion. These calibrations will be performed approximately every 3
  months.

* The second SECCHI campaign is scheduled for Jan 7-20.  There will be a
  second pass each day for SECCHI data only, with the passes
  approximately 12 hours apart. the second pass will be about 3 hours
  long.


COORDINATED OBSERVATIONS
------------------------

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Scheduled activities for Week 50:

M Dec 10 (344)
T Dec 11 (345)
W Dec 12 (346)
T Dec 13 (347)
F Dec 14 (348)
S Dec 15 (349)
S Dec 16 (350)

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Scheduled activities for Week 51:

M Dec 17 (351)
T Dec 18 (352)
W Dec 19 (353)
T Dec 20 (354)  Ahead: Momentum dump 14:00 UT
F Dec 21 (355)
S Dec 22 (356)
S Dec 23 (357)

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Scheduled activities for Week 52:

M Dec 24 (358)
T Dec 25 (359)
W Dec 26 (360)
T Dec 27 (361)
F Dec 28 (362)
S Dec 29 (363)
S Dec 30 (364)

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Upcoming events:

2007:

* Dec 2007-May 2008    Ulysses quadrature
      http://stereo-ssc.nascom.nasa.gov/plans/UlyLocation2006-2014_v1.pdf

2008:

SECCHI Stepped calibration rolls
    Ahead:    Jan 3, Apr 1, Jun 24, Sep 23, Dec 16
    Behind:    Feb 19, May 20, Aug 26, Dec 2

* Jan 7-20        SECCHI campaign
* Jan 14        Messenger - Mercury fly-by
* Mar 20 - Apr 16    Whole Heliosphere Interval
            http://ihy2007.org/WHI/targeted_plans.shtml
* Apr 10-16        JOP 204, Energetics and dynamics of the quiet Sun
* Apr 21 - May 16    SUMER campaign
* Oct 6            Messenger - Mercury fly-by