He discovered on FH Serpentis (Nova Serpentis 1970) on February 13, 1970 from Kurashiki, Japan.[2][3]
He was the first to report the very bright V1500 Cygni (Nova Cygni 1975) at magnitude 3.0 on August 29, 1975; it peaked at 2.0, and many hundreds of independent discoveries were subsequently made by others.[4]