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Published online by Cambridge University Press: 25 April 2016
There has been considerable interest in the appearance and nature of images on astronomical photographs which may suggest a transient optical event as the source of the image. In particular, much has been made of possible connections between such images and hypothesised optical activity associated with gamma-ray bursters. This paper describes the investigation of such an image, and discusses briefly various hypotheses as to the nature and source of the image under investigation.