Figure 7
(a) Variation of the radius of the sagittal curvature δRM(Y) along the tangential direction (X = 0) of a 200 mm-long diaboloidal mirror defined by the conjugate parameters given by equation (44). (b) The sagittal height error (at Y = 0) of the right-circular-cylinder approximation calculated as a difference between the exact-diaboloid trace and the approximation height trace with the radius RM0 = 58.5894 mm. |