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Another clear night here and there appear to be significant changes in the spectrum of the nova. Terry Bohlsen, where are you?! Rather than the emission lines that have been showing at H-alpha & H-beta, absorption lines are evident. I re-shot it several times with the same result - calibration is not perfect but close enough. SA100 grating with Canon 650D & 200mm lens, stack of 15 subs.
Cheers -
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