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Whenever you have an isolated image in the midst of a series that shows some unusual event, you will have a hard time convincing anyone that the event is real. Confirmation from a second image or another observer helps enormously. I would carefully examine the discrepant image and see if the unusual object has the same seeing profile as other stars in the frame. Do both a fwhm test, as well as a contour plot. As mentioned, it could be a satellite glint, cosmic ray, airplane beacon light, head-on meteor, or any number of other wierdnesses. If you cannot discredit it, put it on your stack of "unusual events" and pull it out every now and then. Arne Taichi Kato wrote: > Query object by Cucarella > > We have received the following query on a bright transient stellar object(?). > > The images have been posted at: > > http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/others/Cucarella/ > > Could someone identify the nature? >
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