At 2/20/2022 05:13 PM, Moose and Mike wrote:
><<<OK, this raises a question. Why does linear distortion matter - for this
>specific purpose? If the stars are nice pinpoints, does it matter if their
>locations differ a bit from a true star map?
>
>Agreed, but any tutorial I have read said to not correct distortion. Also
>might screw up the stacking with dark frames. Do you think the stars would
>not be affected? You know more about how the various correction algorithms
>work than almost anyone.
Any distortion correction involves some interpolation. The question is whether
the interpolation has enough effect to further smear the distortion. Probably
some but also probably not significant relative to the number of pixels making
up the blur.
WayneS
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