What is a Fourier Transform and why was it necessary to render the image of the total solar eclipse?

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https://reddit.com/r/space/comments/f4l2jv/_/fhrgh2r/?context=1

An explanation of the whole comment would be great. I tried to look up Fourier transform on Wikipedia but it was a lot of math.

In: Mathematics

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Anonymous 0 Comments

Well, I didn’t know about Fourier Transform before this question, but I don’t think the answers given do a great job at ELI5, so here’s my take: the Fourier Transform uses math to take a whole bunch of pictures, choose the best parts from each, and mash it together to form one great picture. Done.

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