A Hole in the Sky

My wife and I also went down to Missouri to see the eclipse.  We were at a state park, and everything went very well, no clouds, no traffic problems, and while we were waiting, we were treated to some live music, which seems to be plentiful out in the country there:

And right on schedule, the sky grew dark, and the sun looked something like this:

Now I would love to start talking about diffraction patterns, but don't worry, we'll stick to trains.