Approximately 20,000 years ago a star in Cygnus ended it’s life in a violent explosion. The shockwave from the blast started travelling outwards and what we’re left is the remnant SNR 065.2+05.7. The intervening time has the remnant spanning about 70 parsec and subsequently it’s very faint.
This is my second attempt at one of the brighter filaments of this structure, Sharpless 2/91 and comprises 6 hours of 10 minute exposures. It’s reproduced here at 80% of the original image size.