Cool. Notice how the sun flares towards the comet as it approaches. That's fairly common. It's as if the sun is a conscious entity trying to protect itself from incoming objects. Or perhaps comets are like "food" and the sun's flare lines up the magnetic field of the comet to attract it.

Here is a link to a site that has all the sun tools he uses on a single page:

http://solarimg.org/artis/

Thanks Rick! That site could keep someone busy for days!