Franklin Polk , Mar 09, 2006; 09:32 p.m.
Zeiss produced fuil fledged lens like those. It had a 210mm focal length, and had a built in light amplification system. Supposedly it could only be used on black and white film due to the tint that the image amplifier produced. One went on ebay a little while back, for relative to the price of the ATN scope, really not that much. Its still listed here: (link)