George Johnstone Stoney, Lord Rosse's assistant, discovered NGC 2375, along with NGC 2373, on 20 Feb 1849. He recorded "6 nebulae of which epsilon [NGC 2375] is perhaps a double star." Although the sketch was included in the Lord Rosse's 1861 publication, John Herschel didn't assign it a GC designation. Dreyer first catalogued NGC 2375 as GCS 5383. Édouard Stephan independently discovered the galaxy on 8 Feb 1878 and measured an accurate position (list IX-9).

300/350mm - 13.1" (2/23/85): second of three in the NGC 2389 group. Faint, low surface brightness, appears larger than nearby NGC 2379 3.7' E. NGC 2375 lies 6.7' W.

400/500mm - 18" (1/13/07): faint, fairly small, elongated 5:3 ~N-S, 0.7'x0.4', broad concentration. Larger but lower surface brightness than NGC 2379 3.6' ESE.

Notes by Steve Gottlieb