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Several nebulae in the constellation Orion commonly called deep-sky objects. A deep-sky object (DSO) is any astronomical object that is not an individual star or Solar System object (such as Sun, Moon, planet, comet, etc.).
The category labelled “deep sky” comprises every astronomical object that is beyond our solar system. Generally, these objects in the depths of space are not visible to the naked eye, but the brightest of them can be seen with a small telescope or even with quality binoculars.
Mar 15, 2010 · Deep-sky objects are celestial objects that exist outside our solar system. Three major types of deep-sky objects are nebulae, star clusters, and galaxies.
Learn the latest tricks for finding and imaging deep sky objects from nearby star clusters and nebulae to distant galaxies.
- What Are Deep-Sky objects?
- Nebulae: Clouds of Gas and Dust
- Galaxies: Island Universes
- Star Clusters: Open Clusters
- Star Clusters: Globular Clusters
- Advice For Observing Deep-Sky Objects
Deep-sky objects lie beyond our solar system and make great observing targets for those using optical aid under dark skies. Amateur stargazers sometimes refer to them as faint fuzzies. Unlike the nearby planets (which look like little disks through a telescope) or stars (which always look like pinpoints), deep-sky objects are hazy spots in the sky ...
There are a few different types of nebulae, or clouds of gas and dust, that you can observe. There are emission nebulae, which include planetary nebulae, that glow because a star late in its life has puffed off a glowing shell of ionized gas. Then there are reflection nebulae, which are clouds of dust that aren’t glowing themselves but reflecting t...
Not surprisingly, the best place to look for galaxies in the night sky is away from the direction of our own galaxy, the Milky Way. The Milky Way blocks the view of more distant island universes. The closest large spiral to Earth is also the easiest to spot: M31, or the Andromeda Galaxy. M81 and M82 are handy galactic targets for the Northern Hemis...
Open star clusters are young, loosely bound gatherings of stars. One of the most famous open clusters is the Pleiades, found in the constellation Taurus. Because this cluster is so close and large, you can view it best with binoculars or even the unaided eye. A telescope gives you too narrow a view and cuts out members of the cluster. The Beehive i...
Globular clusters are huge, ancient conglomerations of tightly packed stars that orbit in the halo of the Milky Way. The big balls of stars lie much farther away than the open clusters we see. The best known globular cluster for Northern Hemisphere observers, M13, lies in Hercules. This deep-sky target is easy to spot with a small telescope.
To see objects in the deep sky that lie in our Milky Way or even farther, you’ll want a dark skyand binoculars or a telescope. Have patience when tracking down these far-flung gems. Wait for your eyes to grow adapted to the dark. Use averted vision if necessary to pick up the dim fuzzies. A good star chart will help you hop your way across the deep...
Deep-sky objects are celestial objects that exist outside our solar system. Three major types of deep-sky objects are nebulae, star clusters, and galaxies.
What is a deep sky object? Generally speaking it's any object in the sky that isn't a star or in our solar system. Most deep sky objects are faint, diffuse and require a telescope to see.
