The Planck-LFI instrument: analysis of the 1/f noise and implications for the scanning strategy
D. Maino, C. Burigana, M. Maltoni, B. D. Wandelt, K. M. Gorski, M. Malaspina, M. Bersanelli, N. Mandolesi, A. J. Banday, E. Hivon
Abstract
We study the impact of the 1/f noise on the PLANCK Low Frequency Instrument (LFI) osbervations (Mandolesi et al 1998) and describe a simple method for removing striping effects from the maps for a number of different scanning stategies. A configuration with an angle between telescope optical axis and spin-axis just less than 90 degrees (namely 85 degress) shows good destriping efficiency for all receivers in the focal plane, with residual noise degradation < 1-2 %. In this configuration, the full sky coverage can be achieved for each channel separately with a 5 degrees spin-axis precession to maintain a constant solar aspect angle.
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