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Does the 180º arch spread the diffraction symmetrically around bright objects in the field?

April 26, 2017Arch bright diffraction field objects spread symmetrically

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Does the 180º arch spread the diffraction symmetrically around bright objects in the field?

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Yes, any obstruction with an integrated edge angle of 180º, or a multiple of 180º (360º, 540º, etc.), will diffract light in a uniform pattern. It does not matter that the arch itself is mounted off to one side of the aperture.