Fig. 2
The irregularity of the lunar limb as a simple structure proportional to 1+cos above the limb. The limb profile is given by the function F(ξ,ζ) that is zero in the black area and unity elsewhere. Two cases were investigated, one with w = 200 m and h = 25 m, the other with w = 12.5 m and h = 1.5 m.
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