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arXiv 1010.0397astro-ph.IM
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The HARPS polarimeter

Frans Snik, Oleg Kochukhov, Nikolai Piskunov, Michiel Rodenhuis, Sandra Jeffers, Christoph Keller, Andrey Dolgopolov, Eric Stempels, Vitaly Makaganiuk, Jeff Val… 展开作者

Frans Snik, Oleg Kochukhov, Nikolai Piskunov, Michiel Rodenhuis, Sandra Jeffers, Christoph Keller, Andrey Dolgopolov, Eric Stempels, Vitaly Makaganiuk, Jeff Valenti, Christopher Johns-Krull

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To be published in ASP Conf Series, Solar Polarization Workshop 6
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英文摘要：

We recently commissioned the polarimetric upgrade of the HARPS spectrograph at ESO's 3.6-m telescope at La Silla, Chile. The HARPS polarimeter is capable of full Stokes spectropolarimetry with large sensitivity and accuracy, taking advantage of the large spectral resolution and stability of HARPS. In this paper we present the instrument design and its polarimetric performance. The first HARPSpol observations show that it can attain a polarimetric sensitivity of ~10^-5 (after addition of many lines) and that no significant instrumental polarization effects are present.

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