NGC 7789: Caroline’s Rose

NGC 7789 is an open star cluster in the constellation of Cassiopeia. It’s also known as Caroline’s Rose or the White Rose Cluster. It’s best viewed on autumn nights. With a rather bright magnitude of 6.7, it’s hard to believe Charles Messier didn’t catalog this large and dense cluster. Thankfully, in 1783, Caroline Herschel recorded this splendid object.

Eta Cassiopeiae (Achird): A Colorful Double Star in Cassiopeia

Eta Cassiopeiae, also known as Achird, is a double-star system in the constellation Cassiopeia. It’s best viewed in autumn through early winter. What’s also notable is how close Achird is to us. Relatively, this double is very close at only 19 light-years away.