Cepheus
Cepheus is a constellation in the northern sky, named after a mythical king of Ethiopia. It contains several notable deep-sky objects, including the emission nebula IC 1396 and the Elephant's Trunk Nebula, and is home to the red supergiant star Mu Cephei.
Source: science.nasa.gov
APODs including "Cepheus"
SH2-155: The Cave Nebula
23/03/2017
This skyscape features dusty Sharpless catalog emission region Sh2-155, the Cave Nebula. In the telescopic image, data taken through a narrowband filter tracks the reddish glow of ionized hydrogen atoms. About 2,400 light-years away, the scene lies along the plane of our Milky Way Galaxy toward the royal northern constellation of Cepheus. Astronomical explorations of the region reveal that it has formed at the boundary of the massive Cepheus B molecular cloud and the hot, young stars of the Cepheus OB 3 association. The bright rim of ionized hydrogen gas is energized by radiation from the hot stars, dominated by the brightest star above and left of picture center. Radiation driven ionization fronts are likely triggering collapsing cores and new star formation within. Appropriately sized for a stellar nursery, the cosmic cave is over 10 light-years across.