10 Lacertae: A Blistering, Brillant Hot Blue Double Star

The double-star system known as 10 Lacertae resides in Lacerta, the constellation of the lizard, a dim constellation visible in the autumn and winter nights. The sky lizard offers a rich collection of deep-sky objects, and 10 Lacertae is one of them. Compared to 8 Lacertae, with its well-known multiple bright blue stars, 12 LacertaeContinue reading "10 Lacertae: A Blistering, Brillant Hot Blue Double Star"

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.