Photographic anomaly in the Morzine sky

Summary

On August 5, 1981, a photographer captured images of the starry sky from the Col de Joux in Morzine. The weather was clear and nothing caught his attention during the shoot. It was only when developing the photographs that he discovered a luminous phenomenon surrounded by a halo, positioned near the star Arcturus in the constellation Boötes. Its location confirmed it was not an exposure error. There were no other testimonies or additional data to help identify the object. GEIPAN classified it as category C, with no conventional explanation.