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Table 1

Overview of our optical monitoring of RX J1131−1231.

Telescope Location Instrument Pixel scale Field Exp. time Epochs Sampling

Euler 1.2 m ESO La Silla, Chile C2 0344 11′ × 11′ 5 × 360 s 265 5.0 (4.0)
Euler 1.2 m ESO La Silla, Chile EulerCAM 0215 14′ × 14′ 5 × 360 s 76 5.4 (4.1)
SMARTS 1.3 m CTIO, Chile ANDICAM 0369 6.1′ × 6.1′ 3 × 300 s 288 6.1 (5.1)
Mercator 1.2 m La Palma, Canary Islands, Spain MEROPE 0193 6.5′ × 6.5′ 5 × 360 s 78 8.9 (4.5)

Notes. The column “Exp. time” indicates the number of dithered exposures per epoch and their individual exposure times. One epoch corresponds to one data point in each light curve. The temporal sampling of the observations is given as the average (median) number of days between consecutive epochs, excluding the seasonal gaps.

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