Jonathan_S wrote:The Graysons realized that sensors and such were getting better and the uncertainty "bubble" the targeted ship most likely was within had been shrinking; and so they decided that they could accept fewer beams in exchange for making the remaining ones much more powerful.
Or they realised that missile exchanges were far more likely to be the dominant exchange such that, by the time any ship arrived in energy range, it would be damaged sufficiently that ECM couldn't hide it completely and its ability to manoeuvre would be reduced too.
But going back to the discussion of whether you can see them and whether ships can pinpoint where they came from, I don't know if there's sufficient ionisation of the solar wind and dust in the path of the graser to light up its full track. It may be sufficient for Manticore and Grayson advanced sensors to see them. But even if they can't be seen, the graser mount firing is definitely visible. That's a powerful dump of energy and, however focused it may be, there will be leakage. If you couple that with where strikes happened, a pretty dumb computer can draw straight lines.
It may not attribute the exact sources to the exact destinations, but does it really matter?
And I mentioned that the laser or graser WILL ionise and even vapourise dust grains out in the interplanetary medium (IPM is not a real vacuum, nor is ISM or even IGM). So really sensitive cameras by the filming crew could pick them up

One of the producers in Star Trek (maybe Michael Okuda) was once asked why the ships made a "whoosh" sound when they flew by. He answered they had very sensitive microphones. Well, ISM isn't a vacuum so it
can transmit sound. But it's of such low density that the speed of sound is virtually indistinguishable from zero. To hear the "whoosh", you either need computer correction or you need to be close enough to be run over by the ship. Now, if he had said it was a
gravitational wave detector...