Spectrum from 22nd March › Forums › Variable Stars › Nova Cas 2021 › Spectrum from 22nd March 23 March 2021 at 1:14 am #583997 John CoffinParticipant 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.
