this may be the first video of a GRAZING asteroid occultation, and confirmed by David Herald of IOTA to be three actual events; not scintillation. you will see 3 obvious stars in the video, and a fourth, but dim TARGET star at about the 10 o'clock position from the bright star near center (I had to turn my screen brightness way up to see it). and yes, they are slightly out of focus. the target star dims on the first event, and then is totally occulted (disappears) in the next two events. http://www.youtube.com/watch?v=ryaHGfAhZGo this graze was captured by Jim Stoffaire, who I believe, like most observers in IOTA, is an amateur astronomer doing real science. for other info, see: http://www.asteroidoccultation.com/observations/NA/ the profile of the asteroid (which is one of several scientific contributions from observing these occultations) is at: http://www.asteroidoccultation.com/observations/Results/ Data2007/20070822_176_IdunaProfile.png .............sam -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.