Zoom-in images on member galaxies of A1213. Left: DR10 DESI Legacy Survey optical image of the inner region of A1213. Overlaid are the 54 MHz contours at ∼12″ resolution (red) and the 144 MHz contours at ∼0.3″ resolution (black). Yellow circles denote members of A1213 that could be related to the elongated tail, with their corresponding redshift from SDSS. Right: 144 MHz image at ∼6″ resolution zoomed onto the elliptical galaxy on the north-west region of A1213. The optical galaxy is surrounded by a white square.