His project of measuring the diameter of the Sun during the total solar eclipse on 24 October 1995 involving a large team of young students , was a very challenging one .
He was the Chairman of the CIAA .
Chairman 's project of measuring the diameter of the Sun during the total solar eclipse on 24 October 1995 involving a large team of young students , was a very challenging one .
He was the Chairman of the CIAA .