The open cluster NGC2244 lies in the heart of the Rosette Nebula. The cluster is quite young – less than 5 million years old. Its radiation has excavated the gas in the nebula behind it leaving the dark cavity. Note the bright yellow star is a foreground Type K star.

PlaneWave 12.5″ Astrograph with a ZWO ASI6200 camera, and ASA gearless DDM-85 mount. F/5 LRGB (80/3min L, 28/3min RGB).