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Table 1

Overview about new transit observations of HAT-P-12b.

Date Telescope Filter texp (s) Cadence (s) Ndata rms (mmag) β Airmass

2011 Mar. 9 Asiago R 10 12.1 1117 2.00 1.12 1.00–1.20
2011 Apr. 7 STELLA r 40 78 205 1.92 1.64 1.03–1.91
2011 Apr. 23 STELLA r 40 78 85 1.45 1.00 1.07–1.28
2011 May 9 STELLA r 40 78 204 1.26 1.02 1.03–1.59
2011 May 25 STELLA r 40 78 204 1.83 1.00 1.08–2.77
2011 Jun. 7 STELLA r 40 78 205 1.14 1.00 1.03–1.61
2011 Jun. 23 STELLA r 40 78 203 2.03 1.06 1.07–2.76
2012 Feb. 6 STELLA V 30 145 133 4.10 1.08 1.03–1.90
2012 Mar. 19 Asiago R 10 12.1 930 2.11 1.11 1.03–1.42
2012 May 3 STELLA V 40 186 92 2.04 1.03 1.03–1.36
2012 May 6 STELLA V 40 186 107 2.77 1.05 1.03–2.02
2012 Jun. 4 STELLA V 40 128 129 3.88 1.00 1.03–2.12
2013 Apr. 5 LBT U spec 90 125 66 1.57 1.18 1.02–1.28
2013 Apr. 5 LBT F972N20 90 117 63 0.98 1.00 1.02–1.28
2014 Feb. 27 STELLA g 80 104 140 1.69 1.00 1.07–2.17
2014 Mar. 15 STELLA g 80 104 136 1.34 1.45 1.03–1.28
2014 Mar. 15 NOT B 60 103 139 1.52 1.00 1.04–1.34
2014 Mar. 15 WHT u 23 23 676 7.16 1.36 1.03–1.38
2014 Mar. 15 WHT g 5.7 5.7 2717 1.69 1.96 1.03–1.38
2014 Mar. 15 WHT r 5.7 5.7 2717 1.27 2.00 1.03–1.38
2014 May 15 OAdM I 120 136 40 1.44 1.76 1.20–1.51
2014 May 28 STELLA i 45 72 240 1.55 1.00 1.04–1.56
2014 May 28 TNG u 40 49 308 5.44 1.22 1.03–1.32

Notes. The columns give the observing date, the used telescope, the chosen filter, the exposure time, the observing cadence, the number of observed individual data points, the dispersion of the data points as root-mean-square (rms) of the observations after subtracting a transit model and a detrending function, the β factor (see Sect. 4), and the airmass range of the observation.

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