spectroscopic observation with C11 and LHiResIII spectrograph with 2400 l/mm grating: 8 Lac and also a star from TESS list: V357Lac – HD 212044. There was a huge temp. drop from 24 degr. to about 10 degr. during the evening. This has an influence on the Resolving Power of the spectrograph. The last star has only a R~ 11000.