An open record of things people cannot explain

Ari�ge, France · 2011-06-28 · from the GEIPAN archive

Photographed in Ari�ge, France

A witness sends us a series of photographs on which she discovers "bizarre elements." No observation was made at the time the photos were taken. Determined to understand the phenomenon, the witness takes a photograph under the same conditions the next day. The same phenomenon appears again. This case illustrates very well a category of technical explanations for photos that are at first glance very strange: they are reflections in the camera's optics, appearing in the form of "caustics" (a family of surfaces in optics). The shooting conditions of the 5 photos taken in Ariège are perfect for the appearance of such optical effects in certain cameras (because this depends on the configuration of the optical blocks): a dark landscape with a few bright light sources, giving strong contrast, further reinforced by a long exposure time (between 23 and 35 seconds). The quality of the photos provided allows GEIPAN to open this case in order to concretely illustrate a case of misidentification linked to an optical phenomenon essentially due to the use of a digital camera under particular conditions (see the photographic analysis). The case is classified as A.

What stood out: photographed

 

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This is an official case file of GEIPAN, the French space agency's unidentified aerospace phenomena office, machine translated from French. The original text and the full investigation file are at geipan.fr. We reproduce it with thanks and remove anything on request.