U.F.O. Spectrographic Analysis
I've often wondered whether or not a spectrographic analysis might be of use as regards UFOs.
You should necessarily need to have the spectrograph on site during a sighting, provided that video or still images of sufficient quality are available. It wouldn't be as good as having the apparatus on the spot, but it might be interesting. At the very least, the colours could be correlated to the emission spectra of the various elements present.
If it's a plasma of some sort that generates the visible light, clues to the nature of the plasma (electron density, temperature, etc..) should be able to be cleaned from the color information.
As it is, some of what I've seen pictures and videos of seem to be run of the mill LED lighting, they have a very particular look to them. Others seem to be some sort of high density plasma, and still others resemble the orange/red glow of a helium/neon gas mixture.
Anyway, I guess this was just to say that you're not the only one that has had this "crazy idea"!