The authorship of intensive use of diffraction gratings to take UFO pictures does not go to Claude Poher (1976) but to the U.S. Air Force in 1953…! Read the excerpt “How to Expose Flying Saucers” from the Popular Science review issued in January 1953.
This document explains, step by step, how to make a small equipment that will adapt a diffraction grating on the objective of your mobile phone.
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Fifty diffraction gratings are about to be delivered to Ukraine. A warm thank to the private groups from Eastern Europe who realized the importance of these free, easy to use small devices.
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