Herschel PACS and SPIRE spectroscopic maps of the most important FIR cooling lines in NGC 891: [Oi] λ 63 μm (upper left), and [Oiii] λ 88 μm (upper middle), [Nii] λ 122 μm (upper right), [Oi] λ 145 μm (lower left), [Cii] λ 158 μm (lower middle), and [Nii] λ 205 μm (lower right). The maps are centred on , (J2000.0), except for the [Nii] 205 μm image that is centred as in Fig. 1, and are presented in their native resolution and pixel size. We only show pixels with S/N> 3σ, yet note that only raster strips are available for the [Oiii] λ 88 and [Oi] λ 145 μm line emission. Contours from the F_TIR map (see Fig. 1) are superimposed on each image as a visual aid, with the levels corresponding to 4 × 10^-6, 1 × 10^-5, 2.5 × 10^-5, 5 × 10^-5, 7.5 × 10^-5, 1 × 10^-4, and 1.25 × 10^-4W m^-2 sr^-1. North is up, east is to the left.