Exposures and filters: 165:150:135 min for Ha, OIII, and SII respectively; 30 min each of RGB. Total exposure: 9 hrs
Color mapped using the Hubble Palette with R=SII; B=OIII, and G=Ha. Standard color data added as layer for star colors.
FOV =90 x 63 arc minutes
From wikipedia: Also known as the Heart Nebula, IC 1805, Sh2-190, lies some 7500 light years away in the Perseus Arm of our galaxy in the constellation Cassiopeia. This is an emission nebula showing glowing gas and darker dust lanes. The nebula is formed by plasma of ionized hydrogen and free electrons. The nebula's intense 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
Distance: ~7,500 light years
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