James Dunlop discovered NGC 6134 = D 412 = h3627 on 10 May 1826 and described as "a pretty large round nebula, about 4' diameter, gradually a little brighter towards the centre. There is a small star on the north, and another on the south side, both involved. This is easily resolved into stars, with slight compression to the centre." His position is 6' too far northeast.

On 5 Jul 1834, JH recorded "a pretty rich loose large, roundish cluster of stars 12..14th mag, 7' diameter, not m comp M." On 15 Apr 1836 he called it "VII class, rich, L, gradually a little compressed in the middle, irregularly round, 12', stars 13,14,15th mag, nearly fills field."

400/500mm - 18" (7/9/02 - Magellan Observatory, Australia): at 128x, NGC 6134 is a bright, fairly large open cluster, at least 10' diameter, with roughly 150 stars resolved from mag 10 and fainter. Many of the stars are arranged in chains, loops and rings although there was no central concentration. The brightest mag 9.3 star (HD 148076) is on the SE side of the cluster, about 4' from the center. The Norma Milky Way background is very rich in this region.

Notes by Steve Gottlieb