John Herschel discovered NGC 1506 = h2605 on 23 Dec 1837 and logged "eeeF, S, R.". On the next sweep (when brighter NGC 1500 was also discovered) he added "between two stars 12th and 13th mag." His position and description matches.

600/800mm - 24" (11/18/12 - Magellan Observatory, Australia): fairly faint, fairly small, oval 3:2 ~SW-NE, 35"x25", weak concentration, gradually increases to a faint stellar nucleus. Situated between a mag 13 star 1.8' SW and a mag 13.5 star 1.1' NE. Member of AGC 3193 with brighter member NGC 1500 24' NW.

Notes by Steve Gottlieb