Example of our overview diagram as produced for every star. The top panels show the full (left) and phase-folded light curves (right) for each exposure setting. From top to bottom, we show the V 24 s, V 120 s, I_c 600 s. At the bottom, we display the four periodograms for each exposure setting, now from left to right. In each periodogram, we mark the best period with an orange line and give its value at the left. The finally chosen period is marked with the blue line and noted in the text in the centre. We note that with the joint analysis, we are able to identify the true rotation period even in periodograms with higher alias peaks. The width of the blue line indicates the period uncertainty.