Example 2 : The Milky Way galaxy as seen by an observer standing outside it

Its Fourier Plot

You can see that the galaxy ( and its glow ) Comes in its Fourier Transform too with the observer upside down !

Ideal Low Pass Filters

Fourier for IDEAL LOW PASS CUTOFF = 60

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Fourier for IDEAL LOW PASS CUTOFF = 30

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Fourier for IDEAL LOW PASS CUTOFF = 10

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Ideal High Pass Filters

Fourier for IDEAL HIGH PASS CUTOFF = 60

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Fourier for IDEAL HIGH PASS CUTOFF = 30

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Fourier for IDEAL HIGH PASS CUTOFF = 5

Milky way with a black hole

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A black hole results in a Milky Way Sandwich

Butterworth Low Pass Filters

Fourier for BUTTERWORTH LOW PASS CUTOFF = 30 Order = 1

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Fourier for BUTTERWORTH LOW PASS CUTOFF = 30 Order = 3

Fourier for BUTTERWORTH LOW PASS CUTOFF = 10 Order = 1

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Fourier for BUTTERWORTH LOW PASS CUTOFF = 10 Order = 4

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Butterworth High Pass Filters

Fourier for BUTTERWORTH HIGH PASS CUTOFF = 10 Order = 1

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Fourier for BUTTERWORTH HIGH PASS CUTOFF = 10 Order = 4

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