LBN 331 (also known as the "Cygnus Waves") is a faint, sweeping emission nebula situated in the Cygnus constellation near Omicron² Cygni (o2 Cyg) and 31/32 Cygni. Composed predominantly of delicate, filamentary tendrils of ionized hydrogen (Hα) and oxygen (O III), this low-surface-brightness deep-sky object is excited by radiation from neighboring massive stars and requires long-exposure astrophotography with narrowband filtering to properly capture against the dense background of the Milky Way plane.
LBN 331 (also known as the "Cygnus Waves") is a faint, sweeping emission nebula situated in the Cygnus constellation near Omicron² Cygni (o2 Cyg) and 31/32 Cygni. Composed predominantly of delicate, filamentary tendrils of ionized hydrogen (Hα) and oxygen (O III), this low-surface-brightness deep-sky object is excited by radiation from neighboring massive stars and requires long-exposure astrophotography with narrowband filtering to properly capture against the dense background of the Milky Way plane.