James Dunlop discovered NGC 6268 = D 521 = h3662 on 5 Jun 1826 and described "2 rows or lines of pretty bright small stars in the parallel of the equator, with a multitude of minute stars resembling a faint nebula, 5' diameter." He made 2 observations and his published position is just 2.5' northwest of center of the cluster. On 3 Jun 1834, John Herschel recorded a "cluster, rich, pL, brilliant, 8', stars irregularly scattered 10..12th mag, place of a double star in the following angle of a triangular condensed group."

200/250mm - 8" (6/27/81): 30-40 stars mag 10-12.5 in a 10' diameter. A denser group of stars in the center is arranged in a line.

Notes by Steve Gottlieb