What are the chances?

What are the chances? Click image to see the movie.

A little over a year ago, I was imaging the moon and managed to catch this highly unlikely event.  I was using my TEC 140 APO with a 2x Powermate (focal length just under 2000mm) with a small webcam. I had already taken 16 or so movie clips of various regions on the moon. About 9 seconds into the original 28 second clip I saw the jet fly by on my monitor. What are the chances that an airliner would fly directly through the center of a very small field of view while someone was taking a movie? Next to zero. This 12 second excerpt (9.9MB) has been reduced in size from the original. The original movie is about 290MB so I pretty much had to compress it. Nevertheless, you can see the turbulent thrust jets from the engines and the wake from the fuselage. Near the end you’ll see the wing tip vortex travel from bottom to top. I’ve used this movie in a number of talks that I’ve given on astronomy and astrophotography and it is always a hit. I hope you enjoy it as well.

Camera: DMK 31AF03.AS (Monochrome 1024×768)
Lens: TEC-140 with Televue 2″ 2X Powermate
Focal Length: 1960mm
Aperture: f/14
Exposure: 1/15 sec
Filter: #56 Dark Green