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arXiv 1207.0976astro-ph.IM
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新技术太阳望远镜可见分光偏振计的初步设计

Preliminary design of the Visible Spectro-Polarimeter for the Advanced Technology Solar Telescope

Alfred G. de Wijn, Roberto Casini, Peter G. Nelson, Pei Huang

摘要:

可见光分光偏振仪(VisSP)是先进技术太阳望远镜(ATST)的首批光学仪器之一。它是一种中阶梯光栅摄谱仪,设计用于在380和900 nm之间的三个单独的焦平面上同时测量太阳光谱的三个不同区域。它将使用ATST的极化能力来测量整个线轮廓的全斯托克斯参数。通过测量磁敏感谱线的偏振,可以得到太阳大气中作为高度函数的磁场矢量,以及相关的热力学性质的变化。ViSP在2弧分视场(600 nm)内的空间分辨率为0.04弧秒。所有焦平面的最小光谱分辨率为180,000。该光谱仪支持多达4个衍射光栅,并完全自动化,以允许快速重新配置。

英文摘要:

The Visible Spectro-Polarimeter (ViSP) is one of the first light instruments for the Advanced Technology Solar Telescope (ATST). It is an echelle spectrograph designed to measure three different regions of the solar spectrum in three separate focal planes simultaneously between 380 and 900 nm. It will use the polarimetric capabilities of the ATST to measure the full Stokes parameters across the line profiles. By measuring the polarization in magnetically sensitive spectral lines the magnetic field vector as a function of height in the solar atmosphere can be obtained, along with the associated variation of the thermodynamic properties. The ViSP will have a spatial resolution of 0.04 arcsec over a 2 arcmin field of view (at 600 nm). The minimum spectral resolving power for all the focal planes is 180,000. The spectrograph supports up to 4 diffraction gratings and is fully automated to allow for rapid reconfiguration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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