Constructing a Hertzsprung-Russell Diagram for a Globular Cluser

Back when I was in high school, I created a Hertzsprung-Russell diagram from a set of data pulled from a star catalog. It was a painful exercise and I think I used several pieces of Bristol board before I got it right.

Now, with the aid of high-resolution telescope images and powerful graphics software, it's much easier, as this video shows.

If you aren't into astronomy, this may not mean much to you, but it's seriously cool.