dispersion_matrix

overlappy.wcs.dispersion_matrix(order)

This operation represents a skew according to the spectral order along the first pixel axis. This matrix has the form:

\[\begin{split}D(\mu) = \begin{bmatrix} 1 & 0 & -\mu \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{bmatrix}\end{split}\]