Night Twentyeight - Eastern Veil Nebula C33

Second evening in a row the set up was in my driveway. This is the Eastern Veil Nebula. Caldwell 33 is part of an extensive supernova remnant known as the Veil Nebula (or the Cygnus Loop). Caldwell 33 is often called the Eastern Veil Nebula. This supernova remnant is so large that two nights ago I imaged the Western Veil Nebula and last night was the Eastern Veil Nebula. The fast-moving blast wave from the supernova explosion is plowing into a wall of cool, denser interstellar gas, emitting light and forcing twisting tendrils of gas into a ballet. The nebula lies along the edge of a large bubble of low-density gas that was blown into space by the dying star prior to its self-detonation. By comparing these 2015 observations to images taken by Hubble in 1997, astronomers can study how the nebula has expanded in the intervening 18 years.