High-resolution continuum maps at 1.3 (top panel) and 0.45 mm (bottom panel) toward R Aqr. The contour level spacing is logarithmic, with a step of a factor of two. The first contours are ±0.15 and ± 1.5 mJy beam⁻¹ for the 1.3 and 0.45 mm maps, respectively. Dashed lines indicate negative levels. The observations are centered at the continuum centroid and taken as the position of the AGB primary (indicated by a red star). The expected position for the secondary is marked by a blue star. The restoring beam shape is displayed in the lower-right corner inset.