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Proceedings Paper

Preliminary scanning strategy analysis for the LSPE-STRIP instrument
Author(s): Federico Incardona; Marco Benetti; Marco Bersanelli; Cristian Franceschet; Davide Maino; Aniello Mennella; Sabrina Realini; Maurizio Tomasi
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Paper Abstract

We present a preliminary study of the sky scanning strategy for the LSPE-STRIP instrument, a ground-based telescope that will be installed at the Teide Observatory (Tenerife, Canary Islands) in early 2019 and will observe the polarized emission of about 25% of the sky in the Northern Hemisphere at 43 and 95 GHz. The same sky portion will be observed at 140, 220 and 240 GHz by LSPE-SWIPE, a stratospheric balloon scheduled for a long-duration flight around the North Pole during the Arctic winter of 2019/2020. The combination of data from the two instruments aims at constraining the tensor-to-scalar ratio down to r ~ 0.03. In our paper we discuss the main scanning strategy requirements (overlap with SWIPE coverage, sensitivity distribution, observation of calibration sources) and show how we obtain a trade-off by spinning the telescope around the azimuth axis with constant elevation and angular velocity. The combination of the telescope motion with the Earth rotation will guarantee the access to the large angular scales. We will observe periodically the Crab Nebula as well as the Perseus molecular cloud. The Crab is one of the best known polarized sources in the sky and it will be observed for calibration purposes. The second one is a source of Anomalous Microwave Emission that could be characterized both in intensity and polarization.

Paper Details

Date Published: 9 July 2018
PDF: 8 pages
Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107082F (9 July 2018); doi: 10.1117/12.2315005
Show Author Affiliations
Federico Incardona, Univ. degli Studi di Milano (Italy)
INFN Milano (Italy)
Marco Benetti, Univ. degli Studi di Milano (Italy)
Marco Bersanelli, Univ. degli Studi di Milano (Italy)
INFN Milano (Italy)
Cristian Franceschet, Univ. degli Studi di Milano (Italy)
INFN Milano (Italy)
Davide Maino, Univ. degli Studi di Milano (Italy)
INFN Milano (Italy)
Aniello Mennella, Univ. degli Studi di Milano (Italy)
INFN Milano (Italy)
Sabrina Realini, Univ. degli Studi di Milano (Italy)
INFN Milano (Italy)
Maurizio Tomasi, Univ. degli Studi di Milano (Italy)
INFN Milano (Italy)


Published in SPIE Proceedings Vol. 10708:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
Jonas Zmuidzinas; Jian-Rong Gao, Editor(s)

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