PACS 70 μm scan map of Uranus (OBSIDs 1342223982+83) from OD 789 (2011-07-12T01:21:57). Pixel scale is 1.′′ 1. Left: original map generated by high-pass filtering and co-addition of scan and cross-scan containing Uranus plus its moons. This map was actually generated as an average of the nine different map parameter data sets per scan direction Middle: convolved Uranus PSF for OD 789 generated from the Uranus reference PSF by PSF matching, cf. Sect. 2.3. It shows a number of pronounced PSF features, while the absence of Titania and Oberon is clearly visible. Right: residual map after subtraction of the convolved Uranus PSF map from the original map. The four Uranus moons Titania, Umbriel, Ariel, and Oberon become clearly visible. For better visualisation different flux scales were used for the individual images.