I had a brief dabble in meteor spectroscopy back in 2005 but the tiny CCD I was using back then seriously limited the sky coverage for a given resolution.
The gradual increase in sensor size in the intervening years has improved matters somewhat as seen in Bill’s impressive results here on the forum, and electronic imaging compared with the old film cameras has enabled a much higher hit rate and continuous monitoring, not just during meteor showers. The resolution/sky coverage equation still favours the old large format film cameras though. The latest cameras coming on the market seem to offer the possibility of closing this remaining gap. The QHY42 in development for example uses a back illuminated CMOS sensor almost an inch square with a claimed peak QE of 95%, read noise of 1.3e- all at a full frame rate of 48fps.
It looks like it could be a dream camera for meteor spectroscopy, though the lenses to take advantage of it are not going to be exactly cheap !
Interesting times !