Sky maps of the millimetre continuum emission in the four fields observed with NIKA2. The maps at 1.15 mm are shown at the top row, and the 2 mm maps are shown at the bottom. The field that contains HD 168607 and HD 168625, labelled HD168*, is centred on HD 168625. The colour scales (indicated at the right of each row) are in Jy beam⁻¹. HPBWs are drawn near the bottom left corners of the HD168* images. The central areas indicate the zoomed region displayed in Fig. 3.