SUNSET: 
0
Photographer:
Mark Germani
Location of Photo:
Vancouver, BC, Canada
Date/Time of photo:
13 Jun 2024, 14 - 16 Jul 2024, 6 Aug 2024
Equipment:
Astro Tech AT92 Telescope, ZWO ASI533MC Pro Camera, iOptron CEM26 Mount, Optolong L-eXtreme & L-Pro filters
Description:
Simeis 57 (also designated individually as DWB 119 for the northern "blade" and DWB 111 for the southern) is an area of low-density emission nebulosity just off Sadr in Cygnus, forming a distinctive propeller shape. There is some OIII in the area, particularly concentrated in one region just east of the main body. Its shape suggests that it might be a rotating outflow but there is no observable central source for this dynamic, and it's likely just coincidence that it has this shape.
