Light curve no. 2 from Fig. 2 of ρ Cas relative to the comparison star (in magnitudes; bright is up). On top the light curve is remarkably dome-shaped. Dots are individual data points; the scatter is extremely small: . The dashed curve, part of the ascending branch, is regrettably not observed. The relatively large scatter of a number of data points preceding the dome near JD 24 55480 is due to unstable sky conditions as the reference stars showed this scatter as well. Two spectral temperatures by Klochkova et al. (2014) are indicated.