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High Moon ..
on 10 Oct 2021
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b=488
image(zeros(b));
hold
X=linspace(-124,124,b);
a=-90:90;
x=70*cosd(a);
y=70*sind(a);
Y=[x -0.7*x;0.7*y -0.7*y];
fill(Y(1,:)+230,Y(2,:)+100,'w');
axis([0 b 0 b]);
[t,d]=cart2pol(X,X');
image(150*ones(b),'AlphaData',rescale(abs(ifft2((((d.^2).^-.8)).*cos(6*rand(b)))),0,1));
axis off;
colormap winter