Author brief career history
Name; koji matsumoto , born in 1965 year. now 53old ( at the point of now, March in 2019 )

Started to watch star from 10 year old. by toy Telescope ( 60mm F15 achromat bought from
father )

Originally, specialized field was (Equatorial Mount ).

Hobby: ---- Music ( including singing a song , Karaoke )