Napioa - Wind Origins

Napioa - Wind Origins
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This is not a true answer, but an expansion on calculating diffraction patterns from @whuber's answer. First, we have the diffraction integral. The function Up describes the complex amplitude in the observation plane at a distance (xp, yp) from the optical axis, and a distance Lz from the source (some kind of diffractive object, e.g. pinhole, camera ...


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Here is an example and personally, I love the effect. It can add a bit of artistry to the photo as in the one I will link to. The cause is due to the aperture blades on my nifty 50mm. Exposure is a secondary to the stars because I have to close the aperture in order to not overexpose the photos with all the bright lights I am shooting into. If I ...



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