A new feature has appeared between H beta and H gamma. It looks very much like the ‘Bowen fluorescence’ feature seen in cataclysmic variables (plus some He II ?) as it is much broader than the other lines
Yes it is there in my spectrum from last night. (blueward of where HeII would be) The spectrum has changed dramatically in just a day
https://britastro.org/specdb/data_graph.php?obs_id=21380%2C21367&multi=yes&mix_flux=yes
Cheers
Robin
