ITT Image Intensifier Tube 75mm Rare R&D Science Research Labs night vision

Description

Offer is the very rare vintage ITT image intensifier tube super large size 75mm diameter . I'm not sure about the model print label " ITT Electro Optical Division on the acrylic housing is correct or not , model 41x0 ???
I can't see clear and read the model number due to the print label worn out .Both input and output are thick fiber optic faceplate , both are 75mm diameter , proximity focus , it seems the photocathode is the S25 type base on the violet material surface . This is the Gen 1 type , very high resolution , image display line pattern test is perfect , no distortion .It can be used for the R&D research labs or science optic project rather than simple night vision application . If using for astroscope project , it may need the huge super large lens to focus large size image on the front 75mm diameter photocathode .
This tube is tested with the -5000 volt output Emco 12v DC-DC HV converter , very good high resolution image and low noise clear image , much better than Gen2 or Gen3 type .It has 2-3 very small blemish spot and 1 tiny 0.2mm tiny bright halo near outer diameter . The Emco HV DC-DC required +12 VDC low power supply or +12VDC battery source , I will provide the general +12VDC power adapter if the buyer need .Please see all pictures for more detail . This is the very rare tube image intensifier for your astroscope night vision science labs project .
Shipping within 48 USA states only , no international shipping . Please do not buy if you are not the Ebay USA members . The tube is operated with high voltage device , please do not buy if you don't know about high voltage safety .Thanks for watching the listing of this item .