Yep, possibly too dark for spectroscopy...
I may try next weekend with my contraption (based on SA100), long exposure and relying on the RA drift (Moon rate), but I doubt it will be of any use, especially because of relatively crowded star field.
Attached image is a stack 64x15 sec @ISO6400, C11 _FR.63, L-Pro, Canon 60D(a).
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