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4 February 2004 The Diffraction Limited Spectro-Polarimeter: a new instrument for high-resolution solar polarimetry
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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.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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, and Michael Sigwarth "The Diffraction Limited Spectro-Polarimeter: a new instrument for high-resolution solar polarimetry", Proc. SPIE 5171, Telescopes and Instrumentation for Solar Astrophysics, (4 February 2004);


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