Images of polarized intensity at 1420 MHz observed with the DRAO ST (left) and 4850 MHz observed with the Effelsberg telescope (right). Short spacings information for 1420 MHz observed with the 100-m Effelsberg telescope and the DRAO 26-m John A. Galt radio telescope and at 4850 MHz extrapolated from WMAP have been added in the Fourier domain (see Sects. 2.1 and 2.2 for more details). The overlaid vectors in the polarized intensity images are shown in B-field direction.