EchMod: a MATLAB toolbox for modeling high resolution échelle spectrographs

EchMod is a MATLAB toolbox designed for the simulation and modeling of high resolution echelle spectrographs. It is designed to allow the rapid calculation of the properties of the most common forms of echelle spectrographs, primarily with astronomical applications in mind. Construction of synthetic 2D images is possible. User in- put spectra may be combined with end-to-end efficiency models to create realistic synthetic spectra. EchMod also allows for an interface to and from Zemax which makes the toolbox useful during the optical design and construction of echelle grating based spectrographs.