> The best way to do this is to mount the narrow-angle dish *and* video camera on > the same mount, then use simple circuitry to superimpose white circle on the > center of the image when signal exceeds some threshold (or vary the size with > signal level.) The results could be startling.
You could also use a stepper motor connected to the polar mount, and scan the sky (or the city under the hill) automagically. This could be interesting even in other bands. Could create some pretty pictures. :) Could it be possible to achieve the same without using a movable antenna? Eg, by an antenna array and comparing phases of the arriving signals?
