Bruhns discovered one NGC object: the open cluster NGC 2175 in Orion. He might found it at Berlin Observatory using a small comet searcher around 1857. It is included as #21 in Arthur Auwers' list of new nebulae in William Herschel's Verzeichnisse von Nebelflecken und Sternhaufen, Königsberg 1862. In 1860 he became director of the new Leipzig Observatory.

Obituary: Obs. 4, 245 (1881); MNRAS 42, 147 (1882); AN 100, 129 (1881)

Berlin Observatory

Painting by Freyendanck, 1838

 

Leipzig Observatory