NGC 2180. Top left: Gaia DR2 proper motions for the members proposed by Angelo et al. (2019b) (blue) and five of the six members proposed by Bonatto et al. (2004) (orange). The sixth member is outside the range of the plot. The error bars are smaller than the markers. The total proper-motion dispersion is indicated for both samples. Top right: parallax vs. G mag for the same stars. Bottom row: same as top row, with a different scale.