[evlatests] Cross-hand phase convention...

[George Moellenbrock]

> significant parallactic angle coverage will de-cohere. (An unpolarized
> source, or a snapshot of a polarized source [no parang coverage], will
> image coherently, but suffer the same image reflection that the Stokes I
> image does,

Ha!  Obviously, an _unpolarized_ source won't show anything in the 
polarization image, of course!  (Any polarized background sources in the 
field will be smeared by parang variation.)  The statement remains correct 
for polarized sources observed with no parang variation.

-George

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