STEREO Weekly Meeting Minutes for 2007-03-13 (Week 11)


ANNOUNCEMENTS
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* The SECCHI campaign in May has been assigned a Joint Observing Program (JOP)
  number of 187.  The write-up is available on the SSC website at

	http://stereo-ssc.nascom.nasa.gov/resources.shtml


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

* All subsystems on both spacecraft are nominal.

* IMPACT: The first calibrated magnetometer data are coming on line.  Several
  SEP instruments are waiting for a decent solar event before they can complete
  their calibration.  MAG and LEP level-1 data should be released shortly.

* SWAVES: Converging on calibrations.  The next software upload is moving
  along.  This upload will include the ability to include spaceweather data.

* SECCHI: A few calibration activities are outstanding.  The pointing was
  changed on B about two weeks ago.  This will require another stepped
  calibration roll, which should be scheduled within the next few weeks.  A few
  hiccups were encountered with planning a new synoptic program.  Getting the
  synoptic program straightened out is the current top priority.  The
  instrument itself is in excellent condition.


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

Week 10

* The recorder on Ahead was not fully played back on days 64 and 67.  About 27%
  of the G&C data was not played back on day 64, and about 5% of the SECCHI
  Special Event partition was not played back on day 67.  There had been some
  earlier estimates that all the recorder would be played back if the complete
  nominal pass could be used.

* On day 69 power was lost at the antenna station for about 20 minutes.  All
  SSR data was recovered.

* The average data volume recovered during the week was 6.4 gigabits each on
  both Ahead and Behind.

* Patched all workstations for daylight savings time.

Week 11

* SECCHI/HI 90 and 270 coincident rolls today.  So far, the data looks good.

* Uploaded G&C patch to Ahead today to correct telemetry problem.  Will be
  doing the same on Behind this afternoon.

* HGA calibration tomorrow on Ahead.

* Behind HGA calibration was performed yesterday.  There was a problem with
  recieved power signal.  The recommendation was to use a different DSN station
  configuration.  The test will be repeated within the next few weeks.

* Will be performing SECCHI/HI 180 degree rolls on both spacecraft on Thursday.

Week 12

* Ephemeris update on Ahead on day 83.

* Time update on Behind on day 78

Other

* HGA calibrations on day 93.

* Potential for momentum dump on Behind in week 14, and on Ahead in week 15.
  Expect these maneuvers to be scheduled for either Wednesday or Thursday.

* Two-week SECCHI campaign starts May 4.  DSN tracks have been scheduled.

* Will be transitioning to unattended tracks during week 18.

* Will be switching to automated triggering for data processing, possibly as
  early as next week.  This will result in fewer 0-length files, and the files
  should be ready earlier.

* Discussion by the SECCHI team of the length of time it takes to do a
  spacecraft load.  They find that there commands are bunching up instead of
  being spaced out as they had intended.  Part of the problem may be due to the
  increasing light travel time to the spacecraft.  APL will look into the
  situation.

* Requests are coming in for SECCHI participation in solar observing
  campaigns.  SECCHI plans to participate in the Hinode/SOHO campaign in April.

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

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Scheduled activities for Week 11:

M Mar 12 (071)  Behind: HGA calibration  
T Mar 13 (072)  SECCHI HI coincident 90/270 degree rolls
W Mar 14 (073)  Ahead: HGA calibration
T Mar 15 (074)  SECCHI HI 180 degree rolls
F Mar 16 (075)  
S Mar 17 (076)  
S Mar 18 (077)  

Notes:
* SUMER/Hinode campaign, Mar 13-Apr 30

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Scheduled activities for Week 12:

M Mar 19 (078)  
T Mar 20 (079)  
W Mar 21 (080)  
T Mar 22 (081)  
F Mar 23 (082)  
S Mar 24 (083)  
S Mar 25 (084)  

Notes:
* SUMER/Hinode campaign, Mar 13-Apr 30

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Scheduled activities for Week 13:

M Mar 26 (085)  
T Mar 27 (086)  
W Mar 28 (087)  
T Mar 29 (088)  
F Mar 30 (089)  
S Mar 31 (090)  
S Apr 01 (091)  

Notes:
* SUMER/Hinode campaign, Mar 13-Apr 30

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