Red Aurora Seen at Ottawa

A DARK plum-red aurora was seen at Ottawa on March 23. Auroral displays occurred on March 23, 24 and 25, but were brightest and most active on March 23. On March 23 an aurora was first observed at 1915 hr. on 75th West Meridian Standard Time (that is, 5 hr. G.M.T.) and an active display continued for several hours. Between 1930 and 2030 a corona pattern persisted. The radiation point was near 5° south of zenith at the beginning and appeared to be displaced slightly eastward during the hour.