High-resolution optical spectra of Mira covering the Δν = + 2 sequence of the AlO B−X system. The AlO bands are marked with blue labels. Locations of the identification markings are only approximate. The date of observation and the corresponding phase and visual magnitude are specified in the upper reight corner of each panel. Some spectra were smoothed. Spectra from Narval are affected by an imperfect combination of different echelle orders in the 4485−4495 Å range.