100 Herculis is a close binary star of two equally bright stars like diamonds on black velvet. The binary lies in the constellation Hercules and is enjoyed on summer nights. Also known as SAO 85752, 100 Her, HDF 166046, STF 2280.
Tag Archives: Hercules
Rasalgethi (Alpha Herculis): Magnificent Red Supergiant with a Bluish Friend
You can view the multiple star system Rasalgethi from the city without the aid of binoculars or a telescope. As a star in the constellation Hercules, it is viewable in late spring through summer. This red supergiant lies 380 light years away from us with a radius 400 times larger than our own sun! AccordingContinueContinue reading “Rasalgethi (Alpha Herculis): Magnificent Red Supergiant with a Bluish Friend”
NGC 6210: The Turtle-Looking Planetary Nebula
NGC 6210 is a dim planetary nebula in Hercules, 6,600 light-years away. A subtle telescope target best seen from dark-sky locations near M13.
Messier 92 (NGC 6341): A Chandelier of Stars
On summer nights, when the constellation Hercules makes its way to the top of the sky, two of the greatest globular clusters tag along: Messier 13 and Messier 92. These ancient objects of the universe are must-see objects, and one can get a good view of them with a simple pair of binoculars. Many observersContinueContinue reading “Messier 92 (NGC 6341): A Chandelier of Stars”
Messier 13 (NGC 6205): A Brilliant Globular Cluster in Hercules
Messier 13 made history in 1974 when astronomers broadcast a message toward this awesome globular cluster, hoping that exterrestrial ears might hear the signal.
The Garden Astronomer 