P Cygni - A rare luminous blue variable star with a peculiar spectrum

Some lines show both absorption and emission.
This is due to the same material being near the surface of the star and also being ejected towards us in a fast stellar wind

HAG 24" RC, Shelyak Lhires spectroscope, SBIG 8300M
see image for details
2018-11-18 & 2018-10-28