SUNSET: 
0
Photographer:
massimo.difusco
Location of Photo:
Ferrara (Italy)
Date/Time of photo:
26/06/2025 00:00
Equipment:
Konus 200/1000 @950mm, Player One Poseidon-C camera, Sky-Watcher Eq6r Pro mount, Optolong L-Ultimate and L-QEF filters
Description:
Mu Cephei (Latinized from μ Cephei), also known as Herschel's Garnet Star, is a red supergiant star at the very edge of the Elephant Trunk Nebula (IC 1396) in the constellation Cepheus. It is a 4th magnitude star easily visible to the naked eye under good observing conditions. Since 1943, the spectrum of this star has served as a spectral standard by which other stars are classified. Mu Cephei is more than 100k times brighter than the Sun, with an absolute visual magnitude of −7.6. It is also one of the largest known stars with a radius around or over 1000 times that of the sun, and were it placed in the Sun's position it would extend beyond the orbit of Saturn.
