to its characteristic shape, M 27 is commonly known as the Dumbbell
Nebula. It is a planetary nebula.Planetary
nebulae are formed when a star reaches the end of its life cyle. The
supply of hydrogen runs out and the star begins fusing helium into
heavier elements (i.e., Carbon, Nitrogen, Oxygen). The remaining star
becomes a white dwarf, which heats up the expanding material.
Ha Images were focused,
acquired, reduced, aligned, and combined in CCDSoft. Color
images were focused using the camera's live view. The subframes
were calibrated, aligned, and combined in ImagesPlus.The
Ha and color images were aligned in RegiStar and the composite image
was created and adjusted in Photoshop.