Date: Mon, 30 Jul 2012 14:22:14 -0400
From: Eric R. Keto 
To: ccyganowski@cfa.harvard.edu, cespaillat@cfa.harvard.edu,
     cqi@cfa.harvard.edu, dwilner@cfa.harvard.edu, hlu@cfa.harvard.edu,
     hwei@cfa.harvard.edu, ijimenez-serra@cfa.harvard.edu,
     joannabrown@cfa.harvard.edu, jzhao@cfa.harvard.edu, koberg@cfa.harvard.edu,
     kwang@cfa.harvard.edu, kyoung@cfa.harvard.edu, mgurwell@cfa.harvard.edu,
     npatel@cfa.harvard.edu, rbussmann@cfa.harvard.edu,
     sandrews@cfa.harvard.edu, tksridharan@cfa.harvard.edu,
     tbourke@cfa.harvard.edu, keto@cfa.harvard.edu, rblundell@cfa.harvard.edu,
     spaine@cfa.harvard.edu, etong@cfa.harvard.edu, qzhang@cfa.harvard.edu,
     ckatz@cfa.harvard.edu, gpetitpas@cfa.harvard.edu,
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     rjharris@cfa.harvard.edu, krosenfeld@cfa.harvard.edu,
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     xjiang@cfa.harvard.edu, rwilson@cfa.harvard.edu, mazimlu@cfa.harvard.edu,
     xjiang@cfa.harvard.edu, pgrimes@cfa.harvard.edu
Subject: Tomorrow's SMA science meeting

SMA science meeting
11 AM, Tuesday July 31
Room M340, 160 Concord Ave

The wideband correlator now under development will require significant
modification to the structure of the SMA data.
Since we will be going through the pain of developing a modified data structure
and ensuring back-compatibility, we have to opportunity to modify the data
format and internal MIR structures for any other improvements we wish.

For example:

Currently the flagging is applied to the data itself with the result that it is
difficult to unflag data. Same with calibration factors. 

System temperatures are stored per baseline even thought they are measured for
each antenna. It is difficult to replace a faulty system temperature from one
antenna with another.

The flux calibration program is not working. The flux calibration is done with
the gain calibration program.

With new formats, we can fix these "features".


Tomorrow you have the chance to suggest other improvements to ease your
frustrations with SMA data processing which otherwise would likely not get done
because of the work involved in changing the basic data format.

Eric Keto
SMA project scientist