Fourier transforms of the bright neighbor KIC 10001898 and sdBV KIC 10001893 light curves extracted from LC data. The pulsation pattern of KIC 10001893 sdBV (top panel, PSF data FT) is clearly visible in the aperture data for the bright neighbor (middle panel). The FT of the PSF data for the bright neighbor (bottom panel) shows no sign of pulsations from the sdBV. Green lines show the 4σ signal detection thresholds of the light curve FTs. The amplitude scale changes in the two bottom panels.