Aberration XY =  created by webMathematica 

Aberration Polar =  created by webMathematica 

created by webMathematica

created by webMathematica

Aberration
created by webMathematica

Reverse Shear X-Y
created by webMathematica

   

created by webMathematica

created by webMathematica

Reverse Shear X
created by webMathematica

Reverse Shear Y
created by webMathematica