Tag Archives: Cygnus

Exploring Black Hole Cygnus X-1 and Its Companion Star

In my article on Cygnus X-1, I cover the black hole and its massive companion star, HDE 226868, along with how they interact through stellar winds. I’ve also included my own photos and clear illustrations to show exactly where the system is located in Cygnus. It’s a mix of science, observation, and practical stargazing guidance.

17 Cygni (Struve 2580): A Pleasing Binary Star in the Swan’s Neck

The constellation Cygnus features the binary star 17 Cygni, located 69 light-years away. Composed of two stars, 17 Cygni A and B, it is faintly visible to the naked eye. This complex system, along with another binary pair, showcases intriguing dynamics reminiscent of a cosmic dance in the night sky. Also known as: SAO 68827, 17 Cyg, HR 7534, HD 187013, HIP 97295, STF 2580

NGC 2451: A Stinging Scorpion Down South in Puppis

NGC 2451, a star cluster in the Puppis constellation, shines brightly during late autumn and winter. With around 40 stars, including the prominent C Puppis, it’s visible with binoculars. The cluster is an optical illusion of two separate groups. First noted by Hodierna in the 17th century, NGC 2451 offers a captivating viewing experience.