(Top left) PEP/GOODS-H map of the GOODS-north field (11′ × 17′) at 100 μm. (Top right) PEP/GOODS-H map of the GOODS-south field (11′ × 17′) at 100 μm. Contours correspond to exposure times greater than 0.5 (at the edge), 3, 6 and 9 (centre) hrs/pix. (Bottom left) Colour composite image of the GOODS-north field at 24 μm (blue), 100 μm (green) and 160 μm (red). (Bottom right) Colour composite image of the GOODS-south field at 24 μm (blue), 100 μm (green) and 160 μm (red). The 24 μm images (PI: M. Dickinson) were obtained by the Spitzer Space Telescope, while the 100 and 160 μm images were obtained by the Herschel Space Observatory. In the colour composite images, sources with contribution from the 24 + 100  μm, 24 + 160  μm, 100 + 160  μm and 24 + 100 + 160  μm bands would correspond to a cyan, magenta, yellow and white colours, respectively. The relatively noisy edges of the colour composite images have been trimmed.