André wrote:
Jim Kingdon heeft ons zojuist aangekondigd :
Don't forget the dish array at Westerbork, see
http://www.astron.nl/p/WSRT2.htm

Also http://en.wikipedia.org/wiki/Green_Bank_Telescope (about 100m,
steerable).

But Arecibo, at 305 m, is much larger than any of these (although it
is only slightly steerable, so you have to wait for your target to
pass over the dish).

Ah, okay... I thought you were talking about a disk array, not about a
single disc.
Anyway, here a google earth web link of Westerbork telescope array
http://maps.google.com/maps?ll=38.43...842,-79.839411

Thanks guys, we'll all be looking for those close passing asteroid photo
ops. I think asteroid location, tracking and spectroscopy should be an
orbital affair as well, one would think it would work well enough in
LEO. Maybe that should be the next big thing, it would only take one
good impact to open peoples eyes and minds to the possibility of space.

That Peruvian impact just wasn't big enough, it only traumatized the
local villagers, which is not near enough of a crowd to do much good.