Spectro-polarimetric measurements of the D3-HeI 5876 A line profile in 35 prominences have been performed in 2003 with the Gregory-Coud\'e Telescope in Locarno. Two different experimental techniques (ZIMPOL and Beam-exchange method) have been successfully employed to determine all four Stokes components. Both give compatible results. The preliminary results as well as the measurement techniques are reported.
Cite
@article{arxiv.astro-ph/0401497,
title = {He-D3 Polarization observed in Prominences},
author = {Renzo Ramelli and Michele Bianda},
journal= {arXiv preprint arXiv:astro-ph/0401497},
year = {2015}
}
Comments
4 pages, 4 figures, Latex, Proceedings "Solar Magnetic Phenomena" Summerschool & Workshop at the Kanzelhoehe Solar Observatory 2003