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15 July 2010 ZIMPOL-3: a powerful solar polarimeter
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The area of high precision solar spectropolarimetry has made great advances in recent years and the Zurich IMaging POLarimeter (ZIMPOL) systems have played a major role in that. ZIMPOL reaches a polarimetric accuracy of 10-5 by using fast (kHz) polarization modulation/demodulation of the light beam in combination with large-area array detectors. A new generation of improved cameras (ZIMPOL-3) are being implemented for the scientific observations at the solar observatory at Istituto Ricerche Solari Locarno. The new system is based on a flexible and compact modular design, which easily adapts to new applications. A faster electronics and new sensors with higher quantum efficency compared to the previous ZIMPOL versions, allow to achieve a better overall efficency. Future plans include observing campaigns at foremost large telescopes and the exploration of new technologies (e.g. CMOS).
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Renzo Ramelli, Silvano Balemi, Michele Bianda, Ivan Defilippis, Luca Gamma, Stephan Hagenbuch, Marco Rogantini, Peter Steiner, and Jan O. Stenflo "ZIMPOL-3: a powerful solar polarimeter", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77351Y (15 July 2010);

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