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Dispersion Relation

The dispersion relation of each grism is parameterized as
\begin{displaymath} \lambda = a0 + a_1x + a_2x^2 + a_3x^3\end{displaymath} (1)
where x is the deflection in pixels relative to the position of the direct image (xobj, yobj) and $\lambda$ is the corresponding wavelength.


Wolfram Freudling
5/29/1999