SiFAP4XP: time domain polarimetry with silicon photometers at the TNG

A. Ghedina; F. Ambrosino; M. Cecconi; M. G. D. Gonzalez; L. Riverol; M. Hernandez; H. Pérez Ventura; J. J. San Juan; J. Guerra; M. Lodi; N. Hernandez; M. De Benedetto; A. Papitto; F. Leone; F. Meddi; Ennio Poretti

doi:10.1117/12.2629295

29 August 2022 SiFAP4XP: time domain polarimetry with silicon photometers at the TNG

A. Ghedina, F. Ambrosino, M. Cecconi, M. G. D. Gonzalez, L. Riverol, M. Hernandez, H. Pérez Ventura, J. J. San Juan, J. Guerra, M. Lodi, N. Hernandez, M. De Benedetto, A. Papitto, F. Leone, F. Meddi, Ennio Poretti

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121847U (2022) https://doi.org/10.1117/12.2629295
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

SiFAP4XP is a new COTS PI instrument mounted at the TNG aimed at observing in the visible band some polarimetric objects simultaneously to IXPE. SiFAP4XP is an experience-based improvement over the previous version of the photometer SiFAP2 currently mounted at the F/11 focus of the TNG. SiFAP4XP takes advantage of the already installed polarimetric unit of Dolores, called PAOLO, based on a double Wollaston prism to split the 4 polarization parameters. Four pairs of Silicon MPPCs are mounted on both sides of a small optical bench and each pair of detectors receives from PAOLO the polarized light of the target and of the nearby sky through 8 optical relays. Another relay is dedicated to A&G. The control electronics are based on Red-Pitayas for photon counting, on GPS disciplined clocks for time tagging the photons with a resolution of 8ns. First light is scheduled for the end of February 2022.

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A. Ghedina, F. Ambrosino, M. Cecconi, M. G. D. Gonzalez, L. Riverol, M. Hernandez, H. Pérez Ventura, J. J. San Juan, J. Guerra, M. Lodi, N. Hernandez, M. De Benedetto, A. Papitto, F. Leone, F. Meddi, and Ennio Poretti "SiFAP4XP: time domain polarimetry with silicon photometers at the TNG", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121847U (29 August 2022); https://doi.org/10.1117/12.2629295

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