Check out the Russian Optics forum. Markus just gave a mini-overview of some 30x180mm Russian behemoth binos that Americansupply sells for $5K. Weighing in at 63lbs, they put a whole new meaning what heavy duty binos might be. There's also the smaller 20x140mm version for $3K.
http://www.americansupply.net/30x180A.html
The 30x180's would have a magnification index of 5400, whereas a 20x80 would have a "mere" 1600. That's some pretty serious light grasp.
http://www.americansupply.net/30x180A.html
The 30x180's would have a magnification index of 5400, whereas a 20x80 would have a "mere" 1600. That's some pretty serious light grasp.