In:
Solar Physics, Springer Science and Business Media LLC, Vol. 297, No. 6 ( 2022-06)
Abstract:
Recently, we have developed a tunable narrow-band imager (NBI) with high spectral resolution based on a Fabry–Pérot (FP) interferometer to observe the solar chromosphere. The NBI system is designed for imaging the Sun at the H $\alpha $ α wavelength (6563 Å). The FP interferometer has a bandpass (FWHM) of 0.09 Å and a free spectral range (FSR) of 3.85 Å at $\lambda = 628$ λ = 628 nm, working in combination with a prefilter with a bandpass of 1.6 Å and a center wavelength at 656.3 nm to achieve narrow-band imaging. We have successfully tested the NBI system on the 65-cm Educational Adaptive-optics Solar Telescope (EAST) in the Shanghai Astronomy Museum, and observed the sunspots in active region (AR) 12880 of the Sun on October 2 and 3, 2021. In this paper, we briefly present a description of the instrument, experimental observations, data processing, and the first observational results.
Type of Medium:
Online Resource
ISSN:
0038-0938
,
1573-093X
DOI:
10.1007/s11207-022-01995-6
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2022
detail.hit.zdb_id:
2211848-2
detail.hit.zdb_id:
1473830-2
SSG:
16,12
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