Rms of the binned RVs, rmsRVb, as a function of the binning in days. The different considered strategies are one measurement per night (the 2 heavy continuous lines), 2 measurements per night with a spacing of 5 h (the 2 dashed lines) and 3 measurements per night with a spacing of 2 h (the 2 thin continuous lines). Circles represent a total observing time of 15 min per night (1 × 15 min), squares represent a total observing time of 30 min per night (1 × 30 min, 2 × 15 min, and 3 × 10 min) and triangles represent a total observing time of 1 h per night (2 × 30 min and 3 × 20 min).
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