The coordinates of the center of the solar disk are regularly measured in the four wavelengths using a precise limb-fitting algorithm. The X and Y pointing coordinates in the four quadrants (crosses) are plotted as a function of time in the figures below. The red lines correspond to Fourier series representations with 48 components. These parametrisations are returned by the eit_point.pro function. These plots are updated every few months.
Last revised: Friday October 30, 2015 11:56 AM - F. Auchère