Integrated intensity maps of selected transitions of ethanol detected toward Sgr B2(N2) in the ReMoCA survey. The equatorial offsets are defined with respect to the phase center of the survey (see its coordinates in Sect. 2.1). In each panel, the contours start at 6σ with σ the noise level of the integrated intensity map, and they increase by a factor of two at each step. The red cross indicates the position of Sgr B2(N2b) and the red circle shows the intrinsic full-width at half maximum assumed to model the emission of Sgr B2(N2b). The green crosses from right to left mark the positions of the dust continuum sources AN02, AN03, and AN06 obtained with ALMA by Sánchez-Monge et al. (2017). The blue ellipse shows the half-power beam width of the ReMoCA survey. The setup (S) and its spectral window (W) are given in the top left corner of each panel with the same numbering as in Table 2 of Belloche et al. (2019). The frequency (in MHz) and upper-level energy (in temperature unit) of the ethanol line are indicated in the top right and bottom right corners, respectively. The integration ranges were optimized for Sgr B2(N2b) and do not necessarily include all the ethanol emission toward the other positions.