Gyula Fényi

He is best known for his work on the Sun and leading the Haynald Observatory to be a leader in solar studies.

In 1864 he became a member of the Society of Jesus, and he was sent to Kalocsa where he would be an instructor of chemistry, mathematics, physics and the natural history of the world.

He studied at the university at Innsbruck beginning in 1874, where he trained in theology, mathematics and physics.

After completing his studies in 1878, he would return to teaching and also serve as an assistant at the Haynald Observatory in Kalocsa.

In 1885 he became the director of the observatory, and would remain at this post until retiring due to poor health in 1913.