Star Clusters and Nebula in Northwest LMC

Most of these NGC objects (see annotated image below) are open star clusters, except NGC 1855, which is a globlular cluster. The frame is centered on NGC 1855 (which also includes NGC 1854). This puts the two more prominent objects, having associated nebulosity, on either side. On the right side is NGC 1850, which is the brightest star cluster in the Large Magellanic Cloud (LMC). It is surrounded by nebulosity that is thought to be a supernova remnant. There is a small bright globular cluster, NGC 1851, just to the lower right of the open cluster. On the left side of NGC1854/55 is NGC 1858 which is an open cluster and emission nebula. Other open clusters are also annotated in the image below. Please see a more extensive summary here. All of these stars are relatively young, between 6-8 million years old. The nebular detail was brought out using hydrogen-alpha (H-a) and oxygen (OIII) narrowband filters, and star colors from RGB filters.