Top: strengths (Q_m and total Q_T) of the m = 1 to m = 4 Fourier components of the stellar potential within the central kpc. The m = 2 term is dominant, and has a constant phase, corresponding to the bar. Bottom: corresponding phases in radians of the Fourier components, taken from the major axis, in the deprojected image. The vertical line indicates the proposed ILR position for the nuclear bar.