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Proceedings Paper

A Low Polarization Solar Vector Magnetograph
Author(s): D. M. Rust; J. W. O' Byrne
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Paper Abstract

A new instrument for measuring magnetic fields in the sun's atmosphere has recently been installed at the National Solar Observatory in New Mexico. At each point within the field of view, it detects both linear and circular polarization in a spectral line from which the solar magnetic field strength and direction may be deduced. The vector magnetograph has low instrumental polarization and low circular-to-linear crosstalk. Spectral resolution is provided by a solid lithium-niobate Fabry-Perot filter which may be electrically tuned to scan any solar spectral line. The instrument is capable of 0.7 arc second spatial resolution and 0.015 nm spectral resolution. Prior to installation, tests were conducted at the Applied Physics Laboratory to evaluate the polarimeter components. The instrument and its background are described, together with some test results.

Paper Details

Date Published: 25 January 1990
PDF: 12 pages
Proc. SPIE 1166, Polarization Considerations for Optical Systems II, (25 January 1990); doi: 10.1117/12.962908
Show Author Affiliations
D. M. Rust, The Johns Hopkins University (United States)
J. W. O' Byrne, The Johns Hopkins University (United States)


Published in SPIE Proceedings Vol. 1166:
Polarization Considerations for Optical Systems II
Russell A. Chipman, Editor(s)

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