Polar Faculae of the Sun

Abstract Monthly data of polar faculae of the sun are given from July 1951 to June 1957, separated into northern and southern hemispheres. In this period including the epoch of spot minimum the north polar faeulae were observed about two times as abundant as the south. Latitude distribution is fitted to the following formula: N = a(φ–φ0): φ0 < φ < 80°, where φ means heliographic latitude and φ0 equals 60° ~ 61°. Visibility function is also derived in agreement with Waldmeier’s observations. Total number of polar faeulae was calculated after correcting for this effect. A criticism on such kind of observations is shortly stated. Relation of polar faeulae with solar corona is emphasized.