Figure 2
Slope along the surfaces S1 and S2 (meridional axis) of the Montel mirror as indicated by the red arrows in the upper inset. These are compared with the theoretical slope of a parabola calculated for the same mirror segment on the (x', y') Cartesian frame (lower inset). Data were recorded with a step size of 0.5 mm.  [article HTML]

© International Union of Crystallography 2014