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The DEep Imaging Multi-Object Spectrograph (DEIMOS) is a general-purpose, faint-object, multi-slit, double-beam, visible-wavelength imaging spectrograph currently being assembled at the Nasmyth focus on Keck II. First light was achieved in June 2002 and first science commenced two weeks later. DEIMOS features wide spectral coverage (up to 5000  per exposure), high spectral resolution (down to ~1 ), high throughput, and relatively wide field of view (81.5 arcmin² field). Conceived as a dual-beam instrument, it has been built with one camera and offers three observing modes: direct imaging, long-slit, and multi-slit spectroscopy.


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Last modified: Wed Apr 21 22:13:58 HST 2010