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Low-res spectrum taken last night shows significant changes from the one on the 18th, with the emission lines flattening out markedly. There may be a slight exaggeration of the effect in the attached montage because the spectrum I obtained was slightly smeared (not a tracking or focus issue, something with the grating which is a worry).
The nova was much brighter visually last night than when I saw it on the 18th, an easy naked eye.
Cheers -
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