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Fig. 1

image

Distortion maps for the first exposure in the J (left panels) and Ks filter (right panels), overplotted to the corresponding FWHM maps. Vectors lengths are multiplied by a factor of 40 to highlight the distortion structures. The adopted natural guide stars asterism is shown as a white triangle, while the LGS constellation is marked with orange star-like symbols. The R magnitude of the natural guide stars is also labelled.

This figure is made of several images, please see below:

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