Radio continuum observations of the North Polar Spur at 1420 MHz.

Radio continuum observations at 1420 MHz of the North Polar Spur (NPS) were made with the 100-m telescope. Contour maps are presented for the region from -6 to +20 deg galactic latitude and from 16 to 35 deg galactic longitude with a HPBW of 10 arcmin in order to study the fine structure of the spur. The Narrow Neck region is nearly resolved and is shown to have many subridges. A sharp, thin ridge is found to extend from the main NPS ridge towards lower galactic latitudes, reaching as low as 2 deg. A list of 250 radio sources stronger than 0.25 Jy in the observed region is presented. Source counts show that point sources at latitudes higher than 6 deg are mostly extragalactic. Discussions are given of radio features of the NPS and some other interesting objects found in the mapped region.