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ratt-ru / meqtrees

A library for implementing radio astronomical Measurement Equations
http://meqtrees.net
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need option to dodge around rotation matix in EMSSVoltageBeam.py #840

Open gijzelaerr opened 10 years ago

gijzelaerr commented 10 years ago
at 2012-02-02 21:21:03 Tony Willis reported:

need option to dodge around rotation matix in EMSSVoltageBeam.py

gijzelaerr commented 10 years ago

Original comment thread migrated from bugzilla

at 2012-02-02 21:21:03 Tony Willis replied:

At present a rotation at about lines 94 through 100 is used to rotate beam values from the local theta/phi axis to a standard Stokes X,Y system. If the beam values have been pre-rotated to the standard system, we need to bypass this operation. Can an option be provided in EMSSVoltageBeam.py and emss2fits.py (and any other scripts which call EMSSVoltageBeam.py) do do this bypass?

at 2012-02-07 15:46:12 Oleg Smirnov replied:

OK, but let's put this off until we've had our discussion with Tobia, as at the moment our coordinate systems are a little bit confusing, at least to me. Once we've cleared it all up, we can provide a consistent set of options for specifying polarization components.