Tapes Bögen (EE60)

William Parry already described distinct brightenings on the supralateral arc in his observation of 1820. But it was not until Walter Tape managed to perceive these arcs as separate halo types through multiple observations at the South Pole in 1986 and examine them further. When fully formed, Tape's arcs sit as short "V"-shaped contact arcs left and right on the supralateral arc or in the lower lateral infralateral arcs. In English literature, these arcs are often referred to as 46° Parry arcs or the upper ones as Parry-supralateral arcs and the lower ones as Parry-infralateral arcs.