Édouard Stephan discovered NGC 2308 = St VI-5 on 13 Jan 1872 with the 31" silvered-glass reflector at the Marseille Observatory. His position matches UGC 3618 = PGC 19949.
400/500mm - 17.5" (2/8/91): fairly faint, fairly small, oval 2:1 N-S. Overpowered by 16 Lyncis (V = 4.9) located 9' SW in the field.
Notes by Steve Gottlieb