Guillaume Bigourdan found IC 1907 = Big. 375 on 22 Oct 1884 and reported it in his 4th Comptes Rendus list. His position matches NGC 1278, discovered by d'Arrest on 14 Feb 1863. See notes on NGC 1275 for more on the confusion of NGC 1275 and 1278.

300/350mm - 13.1" (1/28/84): faint, small. Located 3.4' N of NGC 1275 and forms a close pair with NGC 1277.

400/500mm - 17.5" (10/24/87): fairly faint, fairly small, oval, small bright core. Located in the central core of AGC 426. Forms a close pair with NGC 1277 0.8' NW with V Zw 339 1.4' ESE. NGC 1278 is situated at the NE corner of a parallelogram with NGC 1275 3.4' SSW, NGC 1272 7.5' SW and NGC 1273 5.3' WSW. V Zw 339 appeared extremely faint and small, round.

600/800mm - 24" (2/13/18): CGCG 540-101, which is misidentified as IC 1907 in RC3 and PGC, appeared fairly faint, fairly small, round, 25" diameter.

Notes by Steve Gottlieb