70 μm PSF photometry of Uranian moons for OBSIDs 1342211117+18 on OD 579. Left: actual moon map after subtraction of the convolved Uranus PSF. The centres of the five moons are marked by black crosses and are labelled. The red cross inside the red circle indicates the approximate centre of the Uranus PSF. The circle has a radius of 7.′′ 8 and circumscribes an area of significant PSF subtraction residuals (see right figure) inside which the photometric S/Ns are degraded (cf. Fig. 5). Middle: moon component of the image done by fitting a sharpening kernel and relative flux parameter for the reference PSF at the position of each moon (indicated by black crosses). This Moon component map recovers also intensity inside the circle area where the PSFs are disturbed in the map with the Uranus PSF subtracted. The moon PSF map is displayed with a larger dynamic range than the moon map. Right: residuals map (Moon map minus Moon PSF map) providing a judgement of the quality of the fit. The centres of the five moons and Uranus are marked here by white crosses and are labelled. For comparability, we used the same flux scale for all three images.