Took photo 9 pm of model railroad,facing north ....Didn't notice object till next day looking over previous day's pics ...Didn't see it at time of taking photo,...Noticed object on a diagonal,..Didn't see anything on that angle that could be a reflection. object looks like a moving cloud, thought it could be an insect wing pattern but 4 "beats" when camares shutter" seems like one sec...Could it be beating that fast in one shutter second? google says a cellphone camera could pick up infared spectrum that naked eye can't see. thank you,and please email,call me with your opinion of it. p.S. there was no "ball lightning" , clouds were cumulus ,lit by city lights,..This image wasn't like any other cloud in sky.