GEMINI spectrograph optics.
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 ƒ/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.
Powell
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