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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 5.

Spectroscopic analysis of the Fe I 6173.34 Å line in different solar features. Top panel: a partial raw spectral image, with the line position circled. Bottom panel: temporal variation of the line’s full width at half maximum (FWHM) in a sunspot umbra, a dark filament, and a quiet-Sun region, demonstrating magnetic and thermal broadening.

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