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The first 7 Zernike terms
Aberration
Type
Seidel Classical
Aberration
Type
Seidel Classical
Tilt (n=1,m=1) Defocus (n=2,m=0)
Coma (n=3,m=1) Spherical aberration (n=4,m=0)

Triangular Coma (n=3,m=3)

 Astigmatism (n=2,m=2)
      Quadratic Astigmatism(n=4,m=4)
Zernike Polynomials
     overview
Zernike Polynomials
     mathematical
     expressions
     photo gallery
 first 7 coefficients
     Zernikes and
     classical
     aberrations
     coma due to
     misalignment of
     optical elements
Hartmann
Vs
Shack-Hartmann
     Hartmann vs.
     Shack-Hartmann:
     comparison
SH Test
     questions on the
     SH test
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