That’s a great result, excellent teamwork! I was pretty sure it was strongly foreshortened, not quite right at me but pretty close. (Also good to know where to point my other spectrum systems!)
I’ve found another small bit of the plastic grating film and I’m now intrigued… I have many spectra with nice lines long-ward of 500nm. I would have thought there would have been some blue lines with the brightness of the meteors but there are none. Ed Majden over in Canada contacted me about some spectra he had that showed the same thing.
I think I’ll change the lens on one of my systems to an 8.5mm and stick some plastic grating on that, see how it goes. Tried this before but clearly need to run it a bit longer!
Cheers,
Bill.