› Forums › Variable Stars › Nova Cas 2021 › Spectrum from 22nd March
23 March 2021 at 1:14 am
#583997
![](https://britastro.org/wp-content/uploads/2017/12/picture-8167-1513728374-80x80.jpg)
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This is Monday night’s spectrum with bright helium emission lines.
There are P Cygni profiles in the hydrogen Balmer series and the helium lines With a velocity of about 1400 km/ sec.