Messier 46 - The Demise of a Star

An excellent photo I captured this morning of the Messier 46 open star cluster. This is one of my favorite open star clusters as it has a stark uniquity, one of the stars is dying and has entered the Planetary Nebula stage of its life and is visible as the blue ring on the top-side of the photo. I captured this photo at Frosty Drew Observatory in Charlestown, Rhode Island, USA.

EXIF

Camera: Canon 60D, Focal Length: 1260, f/6.3, Exposure: 50 minutes, ISO: 5000, Process: 50 exposures at 30 seconds each. Median composite each set to reduce noise.