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DEBUGGING | ||||||||
\[I = I_0 \left(\frac{2 J_1(u)}{u}\right)^2\]
\[u = \frac{2 \pi a q}{\lambda R}\]
\(J_1\) = Bessel function of the first kind
\(a\) = aperture radius
\(q\) = focal plane offset
\(λ\) = photon wavelength
\(R\) = distance from aperture to focal plane