Analysing the FWHM over the field of the NGC 2419 data shows the ARGOS performance over the full LUCI2 field of view, measured in 1^′′ seeing. In the upper panel are indicated the positions of all the stars used to measure the azimuthal FWHM variation in the field. Colours separate stars at less then 1 arcmin (blue) and 2 arcmin (red) radial distance from the field centre. The grey encircled asterisk marks the location of the NGS at 225°, that has been used to track the tilt and low-order modes. A small (< 15%) radial increase from 0.25^′′ to 0.28^′′ of the FWHM from the centre to the detector edge is possibly seen in this data set. There is one panel shown for each of the J, H, and K_s bands, with the FWHM ordered in quadrants of the detector.