...é

The notation Coudé has historical origins as CONICA originally was planned for the Coudé focus.

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... ratio

The SR ratio is a common way to describe the quality of the point spread function. It is given by the ratio of the measured and the theoretical diffraction-limited peak intensity.

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... needed

The Nyquist criterion for L and M-band is already fulfilled for a camera with lower magnification (C25L).

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... sampled

Indeed, it is possible to model the wavefront error even at undersampled images (Jefferies et al. 2002). In our case there is no cost to be constrained by the Nyquist criterion because we can rather select the appropriate filter or else we deal with a camera used in the L- and M-band where static wavefront aberrations are negligible.

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... reached

1 pixel corresponds to 13.3 mas (C50S).

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... configurations

Given the combinations of 5 NAOS dichroics, 40 narrow and broad band filters and 7 camera objectives!

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... table

In fact, a configuration file is generated. The instrument control software takes care of what coefficients have to be applied for the selected instrument setup. These processes are hidden and completely automatic.

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... obscuration

The central obscuration which is caused by the secondary mirror will decrease slightly the central peak intensity and raise the side lobes of the Airy function.

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...procedure

This routine was developed by T. Fusco, ONERA.

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... size

Since a 10 $\mu$m pinhole is used which is barely resolved, the influence is small and amounts for the smallest wavelength (1 $\mu$m) at most to 5%.

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... size

The pixel size of the CONICA detector (Aladdin 1K$\times$1K) is 27.0 $\mu$m.

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