Parents
Sign in to add mentor| Eduard Schönfeld | grad student | 1881-1882 | Bonn Observatory | |
| Hermann Carl Vogel | research scientist | 1887- | Astrophysical Observatory Potsdam (Physics Tree) | |
| (https://articles.adsabs.harvard.edu/full/1915ApJ....41....1F) | ||||
Children
Sign in to add trainee| George E. Hale | grad student | 1893-1894 | Astrophysical Observatory Potsdam |