Left panel: at the top we plot the variance (circles) and the average value (triangle) of one data cube of HD 74417 at 2.18 μm. Bottom: contribution of the different noise sources. Right panel: the same for the 1.64 μm filter. The scale for all plots is logarithmic in ordinates. The dotted curves show the 3σ limits of the readout noise, while the gray curves denote the halo fit.
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