I saw this mirror being polished at the U of A mirror lab about two and a half years ago. The second mirror had just finished its spin-casting; hard to believe that it's still being polished.

There were some photos on the wall simulating the LBT's expected resolution -- I remember a picture of Io, in particular, looking about as sharp as the best Voyager photos. And the folks at the mirror lab were saying that it migh be possible to not only image extrasolar planets, but continents on extrasolar planets. I suspect that they were a bit enthusiastic, but any way you cut it, this is going to be a very, very amazing telescope.

Cheers,

Nathan.