Deep Sky Observing

Articles about how to understand, find, and see celestial objects including stars, galaxies, nebulae, and star clusters with binoculars, telescopes, and the naked eye.

The Blinking Planetary Nebula

September 23, 2016 by Brian Ventrudo Filed Under: Deep Sky

While the Milky Way along the backbone of the constellation Cygnus, the Swan, offers many fine targets for stargazers, the wings of the constellation are also well worth exploring, especially in the months of July through October when the constellation lies near the meridian. In this short tour, let’s tiptoe through the western wing of the Swan and inspect the remarkable Blinking Planetary, NGC 6826, and a few more intriguing deep-sky objects [Read more…] about The Blinking Planetary Nebula

Share This:

Touring the Backbone of Cygnus, the Swan

September 16, 2016 by Brian Ventrudo Filed Under: Deep Sky

The Milky Way through the constellation Cygnus. The dark cloud bisecting the Milky Way is the Great Rift.

In the late days of northern summer, the constellation Cygnus lies nearly overhead in the mid-evening hours. A long, conspicuous constellation, Cygnus stretches along the diffuse arc of the Milky Way and is packed full of lovely deep-sky objects for stargazers of all skill levels.

Cygnus is an ancient star group and goes back at least 2,000 years. In Greek legend, Cygnus was a friend of Phaeton, the son of Helios, the Sun god. Phaeton met his demise while foolishly trying to drive his father’s sun-chariot across the sky. When Phaeton fell into the river Eridanus, Cygnus begged Zeus to turn him into a swan so he could fly down to retrieve his friend’s body. In doing so, however, he gave up his immortality. Zeus was touched by the selfless act of Cygnus in honoring his friend, so he cast the swan in a place of honor in the night sky [Read more…] about Touring the Backbone of Cygnus, the Swan

Share This:

Touring Clusters and Stars in Ophiuchus

August 13, 2016 by Brian Ventrudo Filed Under: Deep Sky

As befits a large constellation at the edge of the Milky Way, Ophiuchus is packed with deep-sky sights for observers with small and large telescopes. Open and globular star clusters abound here, along with many fine double stars. Let’s have a short tour of a handful of the highlights of the constellation, moving from easy objects to more difficult sights [Read more…] about Touring Clusters and Stars in Ophiuchus

Share This:

Going Deep in the Snake’s Head

July 24, 2016 by Brian Ventrudo Filed Under: Deep Sky

Sketch of Messier 5. Credit: Vedran Vrhovac at Flickr.com. Click to enlarge.

The constellation Serpens Caput, the Snake’s Head, lies well off the band of the Milky Way and holds relatively few deep-sky sights. But it’s not completely barren. Let’s have a look at three targets in this ancient constellation for stargazers equipped with modest optics and an urge to see something good [Read more…] about Going Deep in the Snake’s Head

Share This:

The Constellation Serpens Caput, the ‘Snake’s Head’

July 16, 2016 by Brian Ventrudo Filed Under: Deep Sky

The region of Ophiuchus and Serpens in a map circa 1825.

In last month’s constellation tour, we examined the dazzling stars of the constellation Corona Borealis, the Northern Crown. This month, we move due south to the northern section of the constellation Serpens, the only constellation split into two parts. These are the stars of Serpens Caput, the ‘head of the snake’, which zigzags vertically along the celestial sphere, just north of the celestial equator, and just west of the much larger constellation Ophiuchus, the ‘serpent bearer’. The stars of Serpens Caput are visible in the northern and southern hemispheres [Read more…] about The Constellation Serpens Caput, the ‘Snake’s Head’

Share This: