The dependance of aberration oefficients on the position of the object plane is more about conjugate shift. It is well known for Seidel terms but maybe Buchdahl wrote it explicitly for higher-order aberrations. It could be interesting.
Otherwise I know how to get aberration for coma for...
Hello,
In order to get the coefficients of the aberration expansion with no explicit dependance on object coordinates I fit the optical path difference with the Zernike basis and convert with the paper of Robert K. Tyson "Conversion of Zernike aberration coefficients to Seidel and
higher-order...