A VIPA-based spectrograph with ultra-high resolution and wide band was designed and built by the astronomical photonics team in NIAOT. The fiber-fed spectrograph is compact (W × D × H: 350 mm × 350 mm × 150 mm) and designed to operate without temperature control measures. The spectrograph also provides a fast and accurate measurement of linewidths. Here we report the performances of the VIPA spectrograph, such as the spectral resolution and coverage, the precision of linewidth measurements, the stability with ambient temperature and data acquisition rate, etc.
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