Light Curve and Fourier Transform of SDSS J083417.21–652423.2. Top: SDSS J083417.21–652423.2 phased-folded light curve, showing the ellipsoidal variation, to P_orb = 2.32 h, which is twice the period of the peak with the highest amplitude in the FT. The solid red line indicates a sinusoidal fit, depicted for a better visualisation of the variation. Bottom: FT. The horizontal dashed red line indicates our detection limit.