Re: fast 2-D convolution in polar coordinates?

Well anyway, the average observer probably could really care less about this
hyberbole about convoluted binary star
"correction" or whatever exact expressions or english or mathmatical
decription you have for something
that is untouchable by most. Unless you all have a reason. Maybe software?
Maybe you are trying to
allow people to stretch out every last morsel of resolution from whatever
aperture?



In the case of visual observing, one can "post process" in the head to
estimate

a blurred image over time.

For Keck and everyone else with adaptive optics the blur is not subtracted
but
partially compensated
to recover some of the diffraction limited information. This process can
make
the image more complicated
as every mirror element controlled represents a degree of freedom to
populate
with noise.
The final stage is to deconvolve an A.O. image with the telescope Point
Spread
Function and in doing one can see all the noisy degrees of freedom.

I knew an old school professional visual double star observer a few
decades ago
who talked about
knowing the point spread function of each telescope he used. He told me
that he
was able to discover
close pairs this way. IIRC this breed of observer used as much power as
possible so that the stellar
disk was at least 3 to 4 arc minutes in diameter.

Are there any more Pro Visual double star observers left ??

dan





.

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