IC 1805 (North Up, East Left)
IC 1805, also known as the "Heart Nebula" is an emission nebula in the constellation of Cassiopeia.  It lies at a distance of ~7,500 light-years. The nebula's intense red output and its configuration are driven by the radiation emanating from a small group of stars near the nebula's center. This open cluster of stars known as Melotte 15 contains a few bright stars nearly 50 times the mass of our Sun, and many more dim stars that are only a fraction of our Sun's mass. This image comprises 5 x Ha, OIII and SII, all 300 seconds each, 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 55 degrees on 28 August 2017. The field of view is 34' by 23' and follows the CFHT convention, Ha-OIII-SII mapped to RGB.
Hills Observatory: 1 January 2013 to 6 May 2018