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Principles common to the design of all spectrographs using echelles as the main dispersing element and gratings for the cross dispersion are discussed. Consideration is given to the possibilities of a Cassegrain echelle spectrograph for an f/8 beam, and a comparison of its features with those of conventional grating spectrographs. Results are presented in a form which makes them useful for echelle spectrograph design for any telescope.
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Daniel J. Schroeder (1970) studied this question.
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