The Planck-LFI instrument: Analysis of the 1/f noise and implications for the scanning strategy

We study the impact of 1/f noise on the PLANCK Low Frequency Instrument (LF I) observations (Mandolesi et al. 1998) and describe a simple method for re moving striping effects from the maps for a number of different scanning st rategies. A configuration with an angle between telescope optical axis and spin-axis just less than 90 degrees (namely similar or equal to 85 degrees) shows good destriping efficiency for all receivers in the focal plane, wit h 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.