The Low Frequency Instrument on board the Planck satellite is coupled to the Planck 1.5 meter off-axis dual reflector telescope by an array of 27 corrugated feed horns operating at 30, 44, 70, and 100 GHz. We briefly present here a detailed study of the optical interface devoted to optimize the angular resolution (10 arcmin at 100 GHz as a goal) and at the same time to minimize all the systematics coming from the sidelobes of the radiation pattern. Through optical simulations, we provide shapes, locations on the sky, angular resolutions, and polarization properties of each beam. (On behalf of LFI Collaboration).
Planck low frequency instrument : beam patterns / M. Sandri, M. Bersanelli, C. Burigana, R.C. Butler, M. Malaspina, N. Mandolesi, A. Mennella, G. Morgante, L. Terenzi, L. Valenziano, F. Villa - In: Experimental cosmology at millimetre wavelengths : 2K1BC workshop, Breuil-Cervinia (AO), Valle d'Aosta, Italy, 9-13 July 2001 / [a cura di] M. De Petris, M. Gervasi. - Melville, New York : AIP, 2002. - ISBN 0-7354-0062-8. - pp. 242-244 (( convegno Experimental cosmology at millimetre wavelengths : 2K1BC workshop tenutosi a Breuil-Cervinia, Valle d’Aosta, Italia nel 2001 [10.1063/1.1475637].
Planck low frequency instrument : beam patterns
M. BersanelliSecondo
;A. Mennella;
2002
Abstract
The Low Frequency Instrument on board the Planck satellite is coupled to the Planck 1.5 meter off-axis dual reflector telescope by an array of 27 corrugated feed horns operating at 30, 44, 70, and 100 GHz. We briefly present here a detailed study of the optical interface devoted to optimize the angular resolution (10 arcmin at 100 GHz as a goal) and at the same time to minimize all the systematics coming from the sidelobes of the radiation pattern. Through optical simulations, we provide shapes, locations on the sky, angular resolutions, and polarization properties of each beam. (On behalf of LFI Collaboration).
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