I stated that it "appeared" he was looking for anamolous objects. The two stars were trailing the same length as the other stars. I don't see how he could confuse them as cometary debris as it is obvious they were stars. If they had been with the comet, they would not have "trailed" since they appeared to be tracking the comet against the stars (as most astronomers do when photographing comets). Anyone that has any experience with this sort of thing would have known that.