Abstract
In this paper the optical system design of one of the spectrograph instruments to be employed in the General Excitation Mechanisms in Nightglow project is described. The instrument has a high throughput with a numerical aperture equivalent to f/1.7 and covers the spectral range from 255 to 327.5 nm. A 3-deg line in the object space is imaged onto a two-dimensional intensified CCD array with spatial and spectral resolutions at least matching those of the detector.
© 1993 Optical Society of America
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