The Elephant Trunk Nebula and Mu Cephei (SHO)
The Elephant Trunk Nebula is a colossal emission nebula in the Cepheus constellation, named for the curled structure at its center (visible in the bottom left of this image) that resembles an elephant's trunk.
In this mosaic composed of two side-by-side frames, I chose to take a stretched look at the incredible color variance and complex cloud structures visible as you move toward the nebula's edge, as well as the distinct garnet color of its brightest companion star, Mu Cephei. Shot at a focal length of 600mm with a 150mm aperture Newtonian telescope and a ZWO ASI533MM Pro camera, using 7nm bandpass narrowband filters to capture the light emitted from the ionized gases in the nebula.
Each color channel in each panel is integrated from 24 separate 10-minute exposures for a total of 24 hours of integration time.

















