Planck Low Frequency Instrument: Beam Patterns

Details Planck Low Frequency Instrument: Beam Patterns Planck Low Frequency Instrument: Beam Patterns

2003-04-08

arxiv.org/abs/astro-ph/0304146v1

AIP Conf.Proc. 616 (2002) 242-244

Astronomy and Astrophysics

Astrophysics

On behalf of the Planck collaboration. 3 pages, 1 figure. Article published in the Proceedings of the 2K1BC Experimental Cosmo

Scientific paper

10.1063/1.1475637

The Low Frequency Instrument on board the ESA 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.

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