| − | '''Mu Cephei''' (Mu. Cep, Erakis, HD 206936) is a [[Supergiant|supergiant star]] in the [[constellation]] of [[Cepheus]].<ref>{{cite web|url=https://www.aavso.org/vsots_mucep|title=Mu Cephei|accessdate=December 28, 2019|publisher=American Association of Variable Star Observers|April 13, 2010}}</ref> The star is known for being the reddest star visible to the unaided eye and was first observed by [[Johann Bayer]] who gave it the [[Bayer designation]] "Mu Cephei." The star can be seen high in the sky in summer and lies in the [[nebula]] IC 1396, making it an excellent target for astrophotographers. Although it can be seen with the unaided eye, it is better observed with [[binoculars]]. It is also a good target to observe in skies affected by [[light pollution]].<ref name=universetoday>{{cite web|url=https://www.universetoday.com/103491/seeing-red-hunting-herschels-garnet-star/|title=Seeing Red: Hunting Herschel’s Garnet Star|accessdate=December 28, 2019|publisher=universetoday|date=July 16, 2013|author=David Dickinson}}</ref> | + | '''Mu Cephei''' (Mu. Cep, Erakis, HD 206936) is a [[Supergiant|supergiant star]] in the [[constellation]] of [[Cepheus]].<ref>{{cite web|url=https://www.aavso.org/vsots_mucep|title=Mu Cephei|accessdate=December 28, 2019|publisher=American Association of Variable Star Observers|April 13, 2010|author=Kate Davis}}</ref> The star is known for being the reddest star visible to the unaided eye and was first observed by [[Johann Bayer]] who gave it the [[Bayer designation]] "Mu Cephei." The star can be seen high in the sky in summer and lies in the [[nebula]] IC 1396, making it an excellent target for astrophotographers. Although it can be seen with the unaided eye, it is better observed with [[binoculars]]. It is also a good target to observe in skies affected by [[light pollution]].<ref name=universetoday>{{cite web|url=https://www.universetoday.com/103491/seeing-red-hunting-herschels-garnet-star/|title=Seeing Red: Hunting Herschel’s Garnet Star|accessdate=December 28, 2019|publisher=universetoday|date=July 16, 2013|author=David Dickinson}}</ref> |