SUNSET: 
0
Photographer:
Andreaiorio
Location of Photo:
Marino, Rome, IT
Date/Time of photo:
22/12/2023
Equipment:
ASI 533MC Pro; ZWO OAG & ASI 120MM for guiding: Skywatcher 130PDS f5 with 1X coma corrector; EQM-35 Pro
Description:
NGC 7789 is one of the oldest open star clusters known, about 1.6 billion years old. It sits in Cassiopeia amidst many stars of the Milky Way, although the compact nature of this open cluster makes it easy to identify. NGC 7789 was discovered by astronomer Caroline Herschel in 1783. It has become known as The White Rose Cluster or Caroline's Rose Cluster because, when seen visually, the loops of stars and dark lanes look like the swirling pattern of rose petals. The approximately 1000 stars that may belong to the star cluster vary in brightness from 11 to 18 magnitudes. The distance is about 6000 light-years, giving this cluster a true diameter of 50 light-years.
