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Here's my SA100 spectrum of an hour ago. Stack of 12x40s with a 10"SCT f/6.3 and Atik 383L+. Also a comparison with 12 December.
The FeII lines are stronger than my last spectrum on 12 Dec. Apart from the huge growth in Ha, if anything the new feature is an emission line that could be OI at 7773. There could be OI around 6300-6360 but at this resolution it's hard to unpick them from the FeII(74) lines.
Cheers
Jonathan
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