2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/13214We show how to take advantage of a circle scanning strategy, such as that planned for the Planck mission, to get rid of low frequency noises for polarised data.5 pages, 5 encapsulated postscript figures. Proceedings of the Workshop The Cosmic Microwave Background & The Planck Mission, held at Santander on June 22 - June 26, 1998Astrophysicstext