This is an interesting region I found in Cygnus located at RA 20:15:42 Dec +45":53. It shows waves of hydrogen-alpha nebulosity that appear to be shocked into compression waves, likely from a previous supernova in the region. The waves resemble those seen in the Western Veil or Witch’s Broom Nebula that are due to a known supernova that occurred around 10,000 years ago.

Exposures: Ha:R:G:B = 330:110:110:110 minutes =1 hour 50 minutes 11 hours total exposure. completely unguided.