| Date | Person | Description |
|---|---|---|
| Krüger, Oswald | Studied mathematics, astronomy, architecture in Rome | |
| Krüger, Oswald | Krüger studied mathematics, architecture and astronomy in Rome under Grassi and Grienberger | |
| Susliga, Wawrzyniec |
Studied astronomy, calendars in Graz
Study and work under Jan Decker |