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Calibration of an Astronomical Spectrograph using a 25 GHz Laser Frequency Comb

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Abstract

A 25 GHz frequency comb for calibration of astronomical spectrographs in the 1.4-1.65 μm region is demonstrated with the R=50,000 λ/Δλ Pathfinder spectrograph at the Hobby-Eberly telescope.

© 2011 Optical Society of America

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