Dumbbell capturing.

Here's a screen dump from one of my computer screens (running dual monitors you know, it's the only way to go with all these programs running at once).
This shows the PHD guiding window and graph, on the right is the DSLR shutter program.
The HC Buttons are a handy little scope controller that comes with PHD.

Question: Why that star on the left?
Answer: That's what you're supposed to do, pick a star off centre that isn't too bright. ;-)