2D velocity maps of the Hα kinematics in Stephan’s Quintet. The background contours (black) were created using the HST F814W filter with contour levels of (0.05, 0.07, 0.2) electrons s⁻¹, which were chosen to bring out key features of the group. The slits are centered along the minor axis of NGC 7319, with points along the slit colored by velocity (given relative to the rest frame of NGC 7319). The top map represents the first-component fits only, as sorted by width (lowest widths; FWHM = 70−​​​​​​850 km s⁻¹), and the bottom map represents the second-component fits (FWHM = 130−1130 km s⁻¹). Points along the slits that are not colored had no significant fits returned by BEAT (or only one-component fits, in the case of the bottom plot), indicating weak or no ionized gas at the position.