Interesting find Albert, should save the photos as i don't think we will ever see this one again .
Only 38000 bucks wonder if they take low offers ?
Karen who was on the forum did this for me ,looks like once speed is increased would give a large mechanical image .
The electromagnetic spectrum has no theoretical limit at either end. If all the mass/energy in the Universe is considered a 'limit', then that would be the only real theoretical limit to the maximum frequency attainable.