Solwind instrument destroyed in test


  • Anonymous


The U.S. Air Force's destruction of one of its own satellites last month ended what had been the longest continuous stream of data from an instrument observing the sun's corona. Satellite P78-1 served as the target in a test of antisatellite (ASAT) weaponry on September 13, 1985. The satellite carried Solwind, a white light coronagraph that observed the solar corona at distances of 3–10 solar radii, according to Robert M. MacQueen, director of the High Altitude Observatory at the National Center for Atmospheric Research (NCAR) in Boulder, Colo.