I don't know how it works, but I like the name, and I like what it does: 2 meter class telescopes getting not just little speckly dots next to the parent star, but big fat planet signals with the star zeroed out completely. Not going to see continents any time soon, but probably fine for spectroscopy as far as I know. Said to be able to image earth-sized planets out to 30 LY. I was wondering if a secondary coronagraph can be rigged against the light from the larger planets to catch moons.
http://www.universetoday.com/2010/04/15/could-an-amateur-astronomer-snap-a-p icture-of-an-exoplanet/ - Rick Monteverde Honolulu, HI
