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A Compact, Ultra-high-resolution Virtually Imaged Phased Array Spectrograph for Solar Spectroscopic Observations: Astrocomb Characterization and First Light

  • Authors: Yutao Wang, Xiaoming Zhu, Xiaoli Yan, P. F. Chen, Huiqi Ye, Dong Xiao, Jinping He

Yutao Wang et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 3.

Top panel: absolute wavelength calibration accuracy (residual rms) and the fundamental photon-noise limit across the operational bandpass. Bottom panel: spectral resolution (﹩{ \mathcal R }﹩) derived from astrocomb line fitting, showing a nonmonotonic variation with wavelength.

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