Low-light camera

Record the fluorescent images using a low-light camera of preferably cooled CCD image intensification camera see Note 11). 

A minelayer with a remotely controlled submarine, one-manned submersible, was chartered. It was equipped with scanning sonar, echo sounder, low-light cameras, headlamps and manipulators and conducted by cable. The submarine was brought down to the group of five wrecks and a video film was made. 

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