At the age of 26 in 1849 , he journeyed to Edo to study military science and Confucianism under Ohashi Tostuan and Fujimori Kouan at their academy .
Kanetake was the Satsuma han 's astronomer and through his treatises he came to the notice of Shimazu Narioki and Nariakira .
At the age of 26 in 1849 , astronomer journeyed to Edo to study military science and Confucianism under Ohashi Tostuan and Fujimori Kouan at their academy .
Kanetake was the Satsuma han 's astronomer and through his treatises he came to the notice of Shimazu Narioki and Nariakira .