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Caution
Note that actually, in the calculations, the diffraction efficiency is not directly taken into acount and must be anticipated by the wavelengths weights to be defined in the "input/wavelengths" page.
The weight for a given wavelength must be multiplied by the grating efficiency at this wavelength. In the case where several gratings are used, the weight must then be multiplied by the product of the gratings efficiencies at this wavelength.

Blaze wavelengths are in general inside a suitable spectral band for the grating and therefore, they provide an indication on the spectral zone in which the grating can be used.

It is highly recommended to have a look to the specifications relevant to a given grating before selecting it for calculations. Indeed, among others, specifications should provide informations on the spectral range and the possible configurations including the suitable angles of incidence and diffraction orders.