Great work Rob! Where are you observing from? (I'm quite familiar with the mountains around Bright from half a lifetime of paragliding).
I managed to get a spectrum of the same comet just before the new year, so will post it when I'm home.
Rob, please let us know if you would like any assistance with the process of taking reference star spectra so that your camera/lens spectral response can be calibrated.
Cheers,
Hamish
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