Want the absolute best from your night vision optics? Since there is a significant variation of both performance and appearance even in the exalted Select Alpha image intensifiers, we are now offering Hand Selected tubes at an affordable price. On average, less then 10% of all Select Alpha tubes qualify for Hand Select category, so availability is very limited. Here are a few of the typical specification of the Hand Select image intensifier:
Thin-Film
Resolution: 64 lp/mm (downgraded), 72+ lp/mm (actual, FOM)
Signal-to-Noise: 25+
Photoresponse: 2100+