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Posts Tagged ‘Keystone’

06/18/2020 – Ephemeris – Finding the constellation Hercules

June 18, 2020 Comments off

This is Ephemeris for Thursday, June 18th. Today the Sun will be up for 15 hours and 34 minutes, setting at 9:31, and it will rise tomorrow at 5:56. The Moon, 3 days before new, will rise at 4:48 tomorrow morning.

Orion, the hard luck mythological Greek hunter gets a splashy constellation in the winter sky, but the greatest hero of all, Hercules, gets a dim group of stars on the border between the spring and summer stars. At 11 p.m. Hercules is very high in the east-southeast. It is located above and right of the bright star, Vega in the east. Hercules’ central feature is a box shaped of star wider at the top than the bottom, called the Keystone, which represents the old boy’s shorts. From each top corner extend lines of stars that are his legs, from the bottom stars, the rest of his torso and arms extend. So in one final indignity he’s upside down in our sky. Some see him crouched down, club upraised holding the Hydra about to throttle it. For those with a telescope it contains the beautiful globular star cluster M13.

The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Hercules finder

Hercules animation showing neighboring stars at 11 p.m. for mid June, Click on image to enlarge. Created using Stellarium.

M13

M13, the Great Globular Star Cluster in Hercules. Credit: Scott Anttila

Stars and M13 visuble in Binoculars in the Keystone of Hercules

Stars and M13 (Great Star Cluster in Hercules) visible in binoculars in the Keystone of Hercules. Click in the image to enlarge. Created using Stellarium.

06/20/2019 – Ephemeris – Hercules wuz robbed!

June 20, 2019 Comments off

Ephemeris for Thursday, June 20th. Today the Sun will be up for 15 hours and 34 minutes, setting at 9:31, and it will rise tomorrow at 5:57. The Moon, 3 days past full, will rise at 12:12 tomorrow morning.

Orion, the hard luck mythological Greek hunter gets a splashy constellation in the winter sky, but the greatest hero of all, Hercules, gets a dim group of stars on the border between the spring and summer stars. At 11 p.m. Hercules is high in the southeast. It is located above and right of the bright star, Vega in the east. Hercules’ central feature is a keystone shaped box of stars, called the Keystone, which represents the old boy’s shorts. From each top corner extend lines of stars that are his legs, from the bottom stars, the rest of his torso and arms extend. So in one final indignity he’s upside down in our sky. Some see him crouched down, club upraised holding the Hydra about to throttle it. For those with a telescope it contains the beautiful globular star cluster M13.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Hercules finder

Hercules animation showing neighboring stars at 11 p.m. for mid June, Click on image to enlarge. Created using Stellarium and GIMP.

Stars and M13 vusuble in Binoculars in the Keystone of Hercules

Stars and M13 (Great Star Cluster in Hercules) visible in binoculars in the Keystone of Hercules. Click in the image to enlarge. Created using Stellarium.

M13

M13, the Great Globular Star Cluster in Hercules. It takes a telescope with an aperture (diameter) of 6 inches (150 mm) to begin the resolve the stars in it. Credit: Scott Anttila