Donald Liebenberg (born 1931 or 1932) is an American astronomer and adjunct professor in the department of physics and astronomy at Clemson University.
He observed his 27th, the solar eclipse of August 21, 2017, from his driveway; by coincidence, his house in Salem, South Carolina, was located in the path of totality.
[1][4] In 1973, Liebenberg was invited by French officials and scientists to participate in the observation of the solar eclipse of June 30, 1973, on an early Concorde supersonic aircraft.
Flying on the Concorde, a group of scientists from Los Alamos and the Paris Observarory, including Liebenberg, remained in the path of totality for 74 minutes while conducting various scientific measurements of the corona.
[1][2][4][7] For comparison, the theoretical maximum duration for totality during the third millennium for any stationary point or observer on the Earth's surface is approximately seven and a half minutes.