John Herschel discovered NGC 1807 = h348 on 25 Jan 1832 (sweep 395) and logged, "a cluster of 10 or 12 large and a good many small stars. The place that of a double star." It is perhaps an outlier of VII.4 (NGC 1817)." His position is accurate.

A 2004 study ("uvby-H-beta CCD photometry of(NGC 1817 and NGC 1807") concludes NGC 1807 is not a distinct cluster. Only(NGC 1817, a very extended open cluster, covers the area.

200/250mm - 8" ~25 stars in cluster including 10-12 brighter stars, several almost collinear. A double star mag 10/11 at 10" separation is near the center. Forms a pair of open clusters with NGC 1817 25' NE.

400/500mm - 17.5" (2/1/92): bright, moderately large, striking group of 30 stars mag 9-14 in 12' including 10 stars mag 11 or brighter. Five bright stars are in a 11' string oriented N-S. The central star in this string is a pleasing, close double star h3268; consisting of mag 9.5/10.5 stars at 10" separation. This double is collinear with two mag 11 stars 1.3' E and 2.9' E oriented perpendicular to the string. Several other members trail to SW forming a cross asterism.

Notes by Steve Gottlieb