Discoveries
He was one of the first to show that the spiral nebula have absorption spectra typical of stars and thus differ from gaseous nebulae (http://www.phys-astro.sonoma.edu/brucemedalists/wolf/). He also discovered 228 asteroids using the method of capturing the shots with a camera he had mounted on his telescope.
Wolf applied astrophotography to map stars. His telescope was originally used to find asteroids. It was soon discovered that it was handy in fiding where stars travel.
He was one of the first to show that the spiral nebula have absorption spectra typical of stars and thus differ from gaseous nebulae (http://www.phys-astro.sonoma.edu/brucemedalists/wolf/). He also discovered 228 asteroids using the method of capturing the shots with a camera he had mounted on his telescope.
Wolf applied astrophotography to map stars. His telescope was originally used to find asteroids. It was soon discovered that it was handy in fiding where stars travel.