John Herschel discovered NGC 2134 = h2991 (along with NGC 2133 = h2989) on 24 Nov 1834 and recorded it in four sweeps. His first observation reads "B; L; R; gbM; 90"." His mean position is 05 51 57.2 -71 06 27 (2000) which is close to the ESO position of 05 51 56.7 -71 05 50 (2000) but RNGC has an incorrect RA of 05 50.1, which is repeated in NGC 2000.0.

600/800mm - 25" (10/10/15 - OzSky): bright, fairly large, round, 1.1' diameter, sharply concentrated with a relatively large bright core. No resolution in the halo except for a mag 14.5 star just off the northeast edge and a mag 15.5 star at the south-southwest edge. NGC 2133 lies 5' SSW.

Notes by Steve Gottlieb