= Hamilton echelle spectrograph
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The <Hamilton echelle spectrograph> is an astronomical <cross-dispersed echelle spectrograph> at Lick Observatory. An <echelle grating> provides high spectral dispersion and a prism separates overlapping diffraction orders in the perpendicular direction. The observatory lists feeds from the Shane and Coudé Auxiliary telescopes.<Spectrograph Synopses by University of California Observatories>[Hamilton echelle spectrograph entry: prism cross-dispersion and telescope feeds]{ref}
The resulting <charge-coupled device> image contains several strips of <optical spectrum>, rather than one continuous line. A <wavelength> reference must locate the <spectral lines> in these strips before small line displacements can be interpreted as a <Doppler shift>.
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