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Proceedings Paper

Utilization of redundant polarized solar spectra to infer the polarization properties of the new generation of large aperture solar telescopes
Author(s): David F. Elmore; Haosheng Lin; Héctor Socas Navarro; Sarah A. Jaeggli
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Paper Abstract

Spectro-polarimetry plays an important role in the study of solar magnetism and strongly influences the design of the new generation of solar telescopes. Calibration of the polarization properties of the telescope is a critical requirement needed to use these observations to infer solar magnetic fields. However, the large apertures of these new telescopes make direct calibration with polarization calibration optics placed before all the telescope optical elements impractical. It is therefore desirable to be able to infer the polarization properties of the telescope optical elements utilizing solar observations themselves. Taking advantage of the fact that the un-polarized, linearly, and circularly polarized spectra originating from the Sun are uncorrelated, we have developed techniques to utilize observations of solar spectra with redundant combination of the polarization states measured at several different telescope configurations to infer the polarization properties of the telescope as a whole and of its optical elements. We show results of these techniques applied to spectro-plarimetric data obtained at the Dunn Solar Telescope.

Paper Details

Date Published: 20 July 2010
PDF: 6 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77354E (20 July 2010); doi: 10.1117/12.857061
Show Author Affiliations
David F. Elmore, National Solar Observatory, Sacramento Peak (United States)
Haosheng Lin, Univ. of Hawai'i (United States)
Héctor Socas Navarro, Instituto de Astrofísica de Canarias (Spain)
Sarah A. Jaeggli, Univ. of Hawai'i (United States)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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