RCW 51 is an emission nebula in the Carina complex located proximate to NGC 3293. There are 16 ionising B-class stars which are probable members of the cluster that affects this nebula, the hottest of which is the B0 Ia supergiant HD 91969.
Imaged in SHO narrowband on my RiDK 500 at Observatorio El Sauce, Chile.
Image Acquisition and Processing: Mike Selby