Abstract
Simultaneous observation of several astronomical sources can be an effective way to increase the efficiency of telescope use. A description of the scheme currently in use at Kitt Peak, employing multiple entrance apertures to spectrographs and digital array detectors, is presented. Typical uses include surveying fields of faint objects for peculiar sources, and deriving radial velocities and/or spectrophotometry of stars or galaxies in clusters.© (1982) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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