STEREO Weekly Meeting Minutes for 2008-03-11 (Week 11)


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

* Maintenance work will be done at APL on Saturday, March 29, from 10-16 UT.
  Interruptions are expected in the command interface.  Instrument teams should
  send any commands in advance.


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

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


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

Week 10

* On day 69 (Mar 9), during the Ahead pass on station 25, the transmitter
  tripped off.  A small amount of SECCHI data was lost when the uplink was
  resweept.  Some tracking data was also lost.

* PLASTIC flight software revision 3.2.7 was successfully loaded on Behind on
  Monday, March 3 (day 63).

* The average daily downlink was 7.1 gigabits on Ahead, and 7.4 gigabits on
  Behind.

* There was a campus-wide power outage at APL from March 7-9.  The MOC stayed
  up on generator, and everything worked as planned.

Week 11

* There have been some schedule changes due to DSN station 43 going offline.
  The track on Ahead this morning was switched to station 26.  This change came
  too late to change the SECCHI schedule, and some data may be affected.  The
  Behind track on Friday is switching to station 34, and SECCHI will adjust
  their schedule accordingly.

Week 12

* The 8th momentum dump on Behind is planned for day 79 (Mar 18) at 21:25 UT.

* The Whole Heliospheric Interval campaign starts March 20, and runs through
  April 16.  The campaign organizers are highly interested in synoptic STEREO
  data, both imaging and insitu, but have not yet requested any special
  observing modes.  The campaign will start off with JOP 201, which is entitled
  "Linking the Corona to the Solar Wind at Ulysses".  Although Ulysses is
  currently unavailable, the campaign organizers still plan to go ahead with
  this JOP, which involves scintillation measurements among others.  South
  polar plumes are expected to be targeted.

Week 13

* There will be a momentum dump on Ahead on Tuesday, day 85 (Mar 25), at 16:30
  UT.  The actual thruster firing takes about 4-5 minutes, but the MOC allows
  90 minutes to carry out the maneuver.  SECCHI doors will be closed for the
  maneuver, and calibrations will be substituted for the regular synoptic
  program.  The calibrations take about 4-6 hours out of the synoptic schedule.

* Maintenance work will be performed at APL on Saturday, March 29.  See the
  announcement above for details.

Week 14

* A SECCHI stepped calibration roll will be performed on Ahead on Tuesday,
  April 1 at 10:35 UT.  This activity will last 3 hours.

* HGA calibrations will be performed on both spacecraft on April 2, at 15 UT
  for Ahead, and 20 UT for Behind.  This involves small rolls of ~1 degree.
  The activity lasts for 2 hours, with the rolls themselves lasting 1 hour.


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

-------------------------------------------------------------------------------
Scheduled activities for Week 11:

M Mar 10 (070)  
T Mar 11 (071)  
W Mar 12 (072)  
T Mar 13 (073)  
F Mar 14 (074)  
S Mar 15 (075)  
S Mar 16 (076)  

-------------------------------------------------------------------------------
Scheduled activities for Week 12:

M Mar 17 (077)  
T Mar 18 (078)  Behind: Momentum dump 21:25
W Mar 19 (079)  
T Mar 20 (080)  Start of Whole Heliosphere Interval Campaign
		JOP 201, Linking Corona to Solar Wind at Ulysses
F Mar 21 (081)  JOP 201, Linking Corona to Solar Wind at Ulysses
S Mar 22 (082)  JOP 201, Linking Corona to Solar Wind at Ulysses
S Mar 23 (083)  JOP 201, Linking Corona to Solar Wind at Ulysses

Notes:
* Whole Heliosphere Interval, Mar 20 - Apr 16

-------------------------------------------------------------------------------
Scheduled activities for Week 13:

M Mar 24 (084)  JOP 201, Linking Corona to Solar Wind at Ulysses
T Mar 25 (085)  Ahead: Momentum dump 16:30 UT
		JOP 201, Linking Corona to Solar Wind at Ulysses
W Mar 26 (086)  JOP 201, Linking Corona to Solar Wind at Ulysses
T Mar 27 (087)  JOP 202, Origin of the Slow Solar Wind
F Mar 28 (088)  JOP 202, Origin of the Slow Solar Wind
S Mar 29 (089)  JOP 202, Origin of the Slow Solar Wind
S Mar 30 (090)  JOP 202, Origin of the Slow Solar Wind

Notes:
* Maintenance work will be performed at APL on Saturday, March 29.
* Whole Heliosphere Interval, Mar 20 - Apr 16

-------------------------------------------------------------------------------
Scheduled activities for Week 14:

M Mar 31 (091)  JOP 202, Origin of the Slow Solar Wind
T Apr 01 (092)  Ahead: SECCHI stepped calibration roll 10:35 UT
		JOP 202, Origin of the Slow Solar Wind
W Apr 02 (093)  Both: HGA calibrations, Ahead: 15:00, Behind 20:00 UT
		JOP 202, Origin of the Slow Solar Wind
T Apr 03 (094)  JOP 203/206, Coronal holes
F Apr 04 (095)  JOP 203/206, Coronal holes
S Apr 05 (096)  JOP 203/206, Coronal holes
S Apr 06 (097)  JOP 203/206, Coronal holes

Notes:
* Whole Heliosphere Interval, Mar 20 - Apr 16

-------------------------------------------------------------------------------

Upcoming events:

2008:

SECCHI Stepped calibration rolls
	Ahead:	Jun 24, Sep 23, Dec 16
	Behind:	May 20, Aug 26, Dec 2

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

* Mar 20 - Apr 16	Whole Heliosphere Interval
			http://ihy2007.org/WHI/targeted_plans.shtml
    Mar 20-26		JOP 201, Linking Corona to Solar Wind at Ulysses
    Mar 27-Apr 2	JOP 202, Origin of the Slow Solar Wind
    Apr 3-9		JOP 203, Coronal hole boundaries *or*
    			JOP 206, Low-latitude coronal holes
    Apr 10-16		JOP 204, Energetics and dynamics of quiet Sun
      			Targets of opportunity: JOPs 205, 206, 194

* Apr 21 - May 16	SUMER campaign
* Oct 6			Messenger - Mercury fly-by