Upper panel: lucky spectrograms for α Sco at the GOSSS spectral resolution of R ∼ 2500 and on the stellar reference frame. For each spectrogram, the name, spectral type, and evening date (YYMMDD) are shown. The 120730 data were obtained with a position angle offset of 24° from the A,B line, and the 180 730 data were obtained with the slit aligned with the A,B line. The spectra of the B component have been rectified, while the spectrum of the A component has been dereddened and relative-flux calibrated. Main atomic lines are indicated. Lower panel: α Sco A spectrogram from LiLiMaRlin degraded to R ∼ 4000, relative-flux calibrated, and not corrected for telluric absorption.