about AC

Antoine Cousyn, born in Paris, France, in 1970, is better known online within both the French-speaking and English-speaking UFO communities under the pseudonym elevenaugust, a reference to the total solar eclipse he observed from within the path of totality in Normandy on August 11, 1999.

After completing a science-oriented secondary education, he left school in 1988 to enter the workforce. He nevertheless continued his education as a self-taught student, focusing on scientific disciplines such as meteorology, astronomy, and physics.

During the same period, he discovered the works of Jacques Vallée and J. Allen Hynek, along with the specialized journals Lumières Dans La Nuit, Phénomènes Spatiaux—which ceased publication in 1977—and Flying Saucer Review. Fascinated by the investigation reports published by the UFO researchers of the time, he decided to become an investigator himself for Lumières Dans La Nuit (LDLN).

After taking a break from UFO research in 1999, Antoine Cousyn renewed his interest in the subject following the 2007 California drone incident. The numerous photographs associated with that case, which was then little known in France, prompted him to investigate photographic and video analysis techniques applied to UFO cases. Over the years, he tested and refined existing forensic methods on the many cases he encountered online.

To date, Antoine Cousyn has carried out more than six hundred photographic and video analyses of UFO-related material for IPACO, the CNES/GEIPAN, as well as for private individuals and specialized organizations such as MUFON.

Some of these investigations have resulted in comprehensive technical reports, as well as presentations and discussions in specialized forums.

Convinced that the vast majority of UFO reports have conventional explanations, he has also built an extensive collection of photographic and video reference material over the years, including numerous documented examples of misidentifications. See the "Examples Gallery / IFOCAT Gallery" section for further information.

He has also contributed to the resolution of numerous hoax cases, including the so-called "Col de Vence Jellyfish" case in May 2009.

Antoine Cousyn specializes in the authentication of photographic and video evidence, particularly through the analysis of associated metadata. In this capacity, he is also commissioned to perform expert examinations and certifications of photographic and video documents outside the UFO field, including legal disputes, commercial research projects, and production companies.

More broadly, since 2013, Antoine Cousyn has been providing contractual case analysis services to the CNES/GEIPAN.

Since 2014, he has also been developing CamCAT, a technical database dedicated to cameras and lenses that is fully integrated into IPACO.

Analyzed photo/video files

For the radio station « Ici et maintenant »