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Fig. 2

image

Left panel: the large systematic noise is clearly visible on the raw light curve of EPIC 201465501, a 14.95 magnitude star in Campaign 1. Right panel: same light curve after being position-decorrelated. The improvement of the precision is evident, the RMS improved from 1358 ppm for the RAWLC to 417 ppm for the DECLC, allowing to clearly see the transits.

This figure is made of several images, please see below:

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