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Stuart’s Event

25 Feb 2013, 10:25 UTC
Stuart’s Event
(200 words excerpt, click title or image to see full post)

This week we have a mystery from the 1950s which we may be able to help resolve.
An amateur astronomer from Oklahoma, Dr. Leon Stuart, photographed a bright flare on the surface of the Moon while tinkering with his new camera in November 1953. The flare or flash was close to the Moon’s terminator and near the centre of the Moon’s face (see following image) and lasted for approximately eight seconds. Dr. Stuart published his photograph and description of the sighting in The Strolling Astronomer newsletter in 1956. He remained convinced until the end of his life that he had seem an asteroid impact the Moon’s surface but most astronomers were skeptical and said that the flash was either a meteor burning up in the Earth’s atmosphere which just happened to appear as if it was an impact on the Moon, or it was a problem with the film in the camera.
Dr. Stuart logged the event as follows:
LUNAR FLARE
Made by Dr. Leon Stuart, Nov. 15, 1953 at 01:00 UT. Lasted 8 to 10 sec. Also observed visually. Star images rather steady, no extraneous lights. Exposure: 1/2 sec. on E.K. 103aF3 plate. 8 inch f/8 reflector.
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