The Bubble nebula is located in the constellation Cassiopeia. This image consists of about 14 hours of exposure. The bubble is caused by stellar winds from a extremely hot massive star 45 times larger than the sun. It’s seven light-years across and about 7,100 light-years from Earth.
Hɑ - 61x300"; OIII - 70x300"; SII - 38x300" Total Integration: 14.1 hours (Darks: ~5 Flats: ~5); Gain: 111.00; Sensor Temp -15C