Maps of the zeroth, first, and second moments. Left panel: moment-zero map (colour scale) of the water maser emission in IC 485 superimposed on the sqashed image (contours). Contour levels are: (−3, 3, 6, 9, 12, 15, 24, 26) × 64 μJy beam⁻¹ (1σ rms = 64 μJy beam⁻¹). Centre panel: mean velocity (first moment) map. Right panel: velocity dispersion (second moment) map. These figures were obtained from the epoch VLBA 2018.16. The beam size of (1.16 × 1.02) mas is reported in the bottom left corner of each panel.