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Proceedings Paper

The Diffraction Limited Spectro-Polarimeter: a new instrument for high-resolution solar polarimetry
Author(s): K. Sankarasubramanian; Craig Gullixson; Stephen Hegwer; Thomas R. Rimmele; Scott Gregory; Tony Spence; Stephen Fletcher; Kit Richards; Emilie Rousset; Bruce Lites; David Elmore; Kim Streander; Michael Sigwarth
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Paper Abstract

The National Solar Observatory in collaboration with the High-Altitude Observatory is developing a new solar polarimeter, the Diffraction Limited Spectro-Polarimeter. In conjunction with a new high-order adaptive optics system at the NSO Dunn Solar Telescope, the DLSP design facilitates very high angular resolution observations of solar vector magnetic fields. This project is being carried out in two phases. As a follow-on to the successful completion of the first phase, the ongoing DLSP Phase II implements a high QE CCD camera system, a ferro-electric liquid crystal modulator, and a new opto-mechanical system for polarization calibration. This paper documents in detail the development of the modulator system and its performance, and presents preliminary results from an engineering run carried out in combination with the new NSO high-order AO system.

Paper Details

Date Published: 4 February 2004
PDF: 12 pages
Proc. SPIE 5171, Telescopes and Instrumentation for Solar Astrophysics, (4 February 2004); doi: 10.1117/12.508790
Show Author Affiliations
K. Sankarasubramanian, National Solar Observatory (United States)
Craig Gullixson, National Solar Observatory (United States)
Stephen Hegwer, National Solar Observatory (United States)
Thomas R. Rimmele, National Solar Observatory (United States)
Scott Gregory, National Solar Observatory (United States)
Tony Spence, National Solar Observatory (United States)
Stephen Fletcher, National Solar Observatory (United States)
Kit Richards, National Solar Observatory (United States)
Emilie Rousset, National Solar Observatory (United States)
Bruce Lites, High-Altitude Observatory/National Ctr. for Atmospheric Research (United States)
David Elmore, High-Altitude Observatory/National Ctr. for Atmospheric Research (United States)
Kim Streander, High-Altitude Observatory/National Ctr. for Atmospheric Research (United States)
Michael Sigwarth, Kipenheuer-Institut fuer Sonnenphysik (Germany)


Published in SPIE Proceedings Vol. 5171:
Telescopes and Instrumentation for Solar Astrophysics
Silvano Fineschi; Mark A. Gummin, Editor(s)

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