The Spectro-Polarimeter of the Andrei B. Severny Solar Tower Telescope at the Crimean Astrophysical Observatory: Optical Design and Implementation

IF 2.7 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS Solar Physics Pub Date : 2024-09-25 DOI:10.1007/s11207-024-02380-1

Alexander Kutsenko, Valery Terebizh, Andrei Dolgopolov, Valentina Abramenko, Andrei Plotnikov, Dmitriy Semyonov, Vladimir Skiruta, Vyacheslav Lopukhin

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Abstract

The Spectro-Polarimeter (SP) is a new instrument installed at the upgraded Andrei B. Severny Solar Tower Telescope (STT) at the Crimean Astrophysical Observatory. The instrument is a traditional echelle slit dual-beam spectropolarimeter with temporal modulation of the polarization. STT-SP provides simultaneous spectropolarimetric observations of the Sun within three 15 Å wide spectral ranges around photospheric Fe I 5250 Å, Fe I 5324 Å, and chromospheric Mg I b2 5172 Å spectral lines. The spectral resolution of the instrument reaches 70,000 with the seeing-constrained slit width of 1 arcsec. The field-of-view of STT-SP is 200 arcsec allowing one to map a moderate size active region within a single raster scan. The instrument will provide new opportunities in the analysis of magnetic fields and thermodynamics of the lower atmosphere of the Sun. In this paper we describe the optical design of STT-SP and present the preliminary results acquired during the commissioning of the instrument.

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克里米亚天体物理观测站的 Andrei B. Severny 太阳塔望远镜分光偏振计：光学设计与实施

分光偏振计（SP）是安装在克里米亚天体物理观测台升级版 Andrei B. Severny 太阳塔望远镜（STT）上的新仪器。该仪器是一种传统的梯形狭缝双光束分光测偏仪，具有偏振时间调制功能。STT-SP 围绕光球层 Fe I 5250 Å、Fe I 5324 Å 和色球层 Mg I b2 5172 Å 光谱线，在三个 15 Å 宽光谱范围内同时对太阳进行分光测极观测。该仪器的光谱分辨率达到 70,000，视线受限狭缝宽度为 1 弧秒。STT-SP 的视场为 200 弧秒，可以在一次光栅扫描中绘制出中等大小的活动区。该仪器将为分析太阳低层大气的磁场和热力学提供新的机会。在本文中，我们将介绍 STT-SP 的光学设计，并介绍在仪器调试期间获得的初步结果。

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来源期刊

Solar Physics 地学天文-天文与天体物理

CiteScore

5.10

自引率

17.90%

发文量

146

审稿时长

1 months

期刊介绍： Solar Physics was founded in 1967 and is the principal journal for the publication of the results of fundamental research on the Sun. The journal treats all aspects of solar physics, ranging from the internal structure of the Sun and its evolution to the outer corona and solar wind in interplanetary space. Papers on solar-terrestrial physics and on stellar research are also published when their results have a direct bearing on our understanding of the Sun.