Located in the Veil Nebula in the constellation Cygnus.
It constitutes the visible portions of the Cygnus Loop, a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago.
At the time of the explosion, the supernova would have appeared brighter than Venus in the sky, and visible in the daytime.
The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter about 2400 light-years.
It is 1,470 light-years away from Earth.
This is one of my later pieces of work and contains 48, 2 minute exposed images, 3.4 hours of data.
It was taken in a Bortle 5 Sky.
The equipment used was:
Williams Optics FLT132
ASI ZWO240MC Pro OSC
Optilong L Extreem Filter
ZWO AM5
The image was processed using Pixinsight and Photoshop.