Originally Posted By: vintorez
AFAIK, there was a little smile difference between Dvina's and Volkhov's optical systems. Volkhow employed a TV camera, while Dvina used... two pairs of eyes (occupators of the 'doghouse') probably supplemented by some simple optics (scopes, binoculars? - I wonder, in order to see a plane from 20 km away, one should need huge magnification... Hpasp, how was the real range of optical tracking in Dvina, assuming perfect weather conditions?)


They had a fixed TZK telescope, and two wheels, that were connected to the FCO's elevation/azimuth wheel.


Hpasp
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