Heinrich d'Arrest discovered NGC 3719, along with NGC 3720, on 15 Mar 1866 and noted a faint, difficult double nebula, with a difference in RA of 9 sec and 1' in declination. His position is accurate.

400/500mm - 17.5" (5/10/86): moderately large, fairly diffuse, almost round, broad weak concentration. Forms a close pair with NGC 3720 2.2' ESE.

Notes by Steve Gottlieb