Though it might be a bit "academic" talking about a device that can only be owned by US citizens, I was fascinated by this image intensifier.
abelhunter (Lance) mentioned it in another thread and gave a link:-
http://www.ceoptics.com/
Here are a couple of articles on it from CN:-
http://www.cloudynights.com/item.php?item_id=35
http://www.cloudynights.com/item.php?item_id=1657
Price starts at US$2995. Must be a US citizen to own one new or used.
Any experience with one of these?