[evla-sw-discuss] Tcal spectrum

Barry Clark bclark at nrao.edu
Fri May 14 15:31:31 EDT 2010


An eon or two ago, I volunteered to organize the Tcals for insertion
into the SDM.  I am getting around to thinking about it again.  I
remind people that the conclusion was, at the time, that the Tcals
should be stored in the 'evlaparm' database, but in a table of their
own.  MCAF would extract them and insert them in the SDM in a format
TBD.

What I have in mind is one class to access Tcals, and a couple of
utilities to maintain the database tables.

The class has constructor
    CalSpectrum(<receivercode>, <antennacode>, <polarizationcode>)
eg
    cs = CalSpectrum("22GHz", "ea07", "R");

Then
    cs.getTcal(<freq in MHz>) will return an interpolated value

There will also be an entry
    List getCalSpectrum()
to return the whole table.

Question:  Should CalSpectrum.java be a part of the
edu.nrao.evla.observe package, or should it go somewhere else?

Other comments?



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