We flew to the yukon territory from san francisco to try to film the aurora borialis.There we're a few clouds. my wife was doing timed shots leaving the shutter open for 8 seconds. she said there was nothing seen in the air but this turned up on her pic. if you look closely you can see a halo of sorts in the pic. also if you look in the background you can see the big dipper. we are stumped as to what it is. any help is welcome.