[Attachment(s) from vladimir galogaza included below]
There are some interesting things mentioned in the resent mails about
optimization of the distance from the ROC
> It usually means more contrast with a definite boundary of ring structure
> > instead of just a bright blob.
> > Steve Koehler also wondered if there was an ideal offset from ROC to use.
> > He did a study and found that the ideal offset was n * SA outside the ROC.
> > I forget what n was but I think it was somewhere around 3.
>I suspect that the half-plane filter would still have some of the edge effect of
>unbalanced SA and defocus,
I could not find relevant postings and will appreciate any information about its location.
I also do not know what is "unbalanced SA and defocus"? Or what is "ideal offset from
ROC", ideal for what? It is probably explained in postings I am missing.
In the meantime I have produced some lobes from simulated interferograms
to clarify what are consequences on the lobe shapes, blurring or else of various
defocus and SA contents.
If "inside" or "outside of ROC" is used to describe positive or negative defocus, simulation shows that there is a little
influence of defocus = 2 or -2 case on lobe shape or blur. If "unbalanced SA" means that SA is not zero it has pronounced effect on
de-blurring of lobes ( taking stem (power) out of them?).