John Herschel discovered NGC 2021 = h2906 on 31 Jan 1835 and logged "vS; F; R; 12". In the northern part of a cluster of stars 14m, 8' long, 3' br." His position points to the small clluster S-L 567 within the stellar association LH 79.

600/800mm - 30" (11/5/10 - Coonabarabran, 264x): bright, compact knot surrounding two resolved stars, slightly elongated, ~20"x15". This knot is in the northern end of a very large, elongated cluster or star cloud. Extending mostly south of NGC 2021 is a very elongated stream of stars, 5'x1', including a mix of brighter and fainter stars (stellar association LH 78). The densest concentration is a 2' group (S-L 567) on the south end with a number of mag 12-14 stars. Roughly a total of 50-60 stars were resolved. The Seagull Nebula complex (NGC 2030, 2032, 2035) lies 12' SE.

Notes by Steve Gottlieb