Comparison of directly calculated (points) and interpolated (dotted lines) limb-darkening profiles for the CHEOPS bandpass at T_eff ≈ 5777 K, log g = 4.44 and for [Fe/H] = −2, −1, −0.5, 0, +0.5. The corresponding power-2 limb-darkening laws optimized to fit the light curve for a typical Jupiter-like transiting exoplanet are also shown (dotted lines). Note that the profiles are offset vertically according to [Fe/H]. The lower panel is plotted as a function of the distancefrom the centre of the stellar disc in units of the stellar radius.