A Far Infrared Polarimeter
A. Catalano, L. Conversi, S. De Gregori, M. De Petris, L. Lamagna, R. Maoli, G. Savini, E. S. Battistelli, A. Orlando, .
Abstract
We describe an experiment to measure calibration sources, the polarization of Cosmic Microwave Background Radiation (CMBR) and the polarization induced on the CMBR from S-Z effects, using a polarimeter, MITOPol, that will be employed at the MITO telescope. Two modulation methods are presented and compared: an amplitude modulation with a Fresnel double rhomb and a phase modulation with a modified Martin-Puplett interferometer. A first light is presented from the campaign (summer 2003) that has permitted to estimate the instrument spurious polarization using the second modulation method.
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