Science Simple - The Propeller Nebula (also known as Simeis 57, HS 191, and C191) is an emission nebula in the constellation of Cygnus. The distance to the nebula is not known.
Astropixel.it | Francesco di Biase astrophotography Propeller Nebula - DWB111 - Astropixel.it | Francesco di Biase astrophotography
Propeller Nebula Widefield - Coelum Astronomia
Propeller wide field copia | ....dopo quasi un mese di inatt… | Flickr
The Propeller Nebula - Galactic Images
Propeller Nebula (2022) - KinchAstro
DWB111 - The propeller nebula in bi colour #Explored | Flickr
DWB111 Propeller Nebula wide in Halpha con reflex | Foto di Stelle
DWB 111, The Propeller Nebula in Cygnus - Sky & Telescope - Sky & Telescope