9 January 1984 The Endue Of Grating Spectrographs
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The entrance slit width of a diffraction-grating spectrometer often limits the light-grasp or etendue of the instrument. The etendue may be increased by the use of a wide grating or mosaic, or one with a large blaze angle. However, those methods are not the only ones available. Further developments may use two or more gratings in arrangements other than a mosaic. These arrangements may use the different gratings in separate beams or consecutively in the same beam.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard G. Bingham, Richard G. Bingham, "The Endue Of Grating Spectrographs", Proc. SPIE 0445, Instrumentation in Astronomy V, (9 January 1984); doi: 10.1117/12.966185; https://doi.org/10.1117/12.966185

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