Deep-Sky Objects

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.

Astronomy for beginners, Deep-Sky Objects

The constellation Sagitta, the Mu Normae Cluster (NGC 6169), and combination object NGC 6188/6193

Deep-Sky Objects, Robotic Spaceflight, The Sun

Telescope on IRIS sees first light

Deep-Sky Objects

The Small Sagittarius Star Cloud, open cluster NGC 6738, and dark nebula Bernes 157

Deep-Sky Objects

Teapot globulars

Astrophotography, Deep-Sky Objects

Sketching small planetaries

Deep-Sky Objects, Stars

Barnard’s E, the Double Double, and globular cluster NGC 6717

Deep-Sky Objects, Stars

Shedding new light on a dying star

Deep-Sky Objects

The Coathanger, globular cluster M22, and the Phantom Streak (NGC 6741)

Deep-Sky Objects, Stars

The Teapot of Sagittarius, globular cluster M4, and the Snake Nebula (B72)

Deep-Sky Objects, Robotic Spaceflight, The Sun

NASA launches satellite to study how Sun’s atmosphere is energized

Deep-Sky Objects

The False Comet, open cluster M23, and globular cluster M69

Astronomy for beginners, Deep-Sky Objects

Sagittarius in detail

Popular Observing Topics

Credit: NASA Goddard Space Flight Center/Public Domain via Wikimedia Commons.

The Sun

Safely observing the Sun can be a fun and rewarding experience.

Credit: Ted Hauter.

The Moon

Our nearest celestial neighbor provides many great sights.

Planets

Targeting our solar system’s other worlds is well worth the effort.

Credit: Tony Hallas.

Deep-Sky Objects

Nebulae, star clusters, and galaxies are the night sky’s hidden gems.

Credit: Celestron.

Telescopes & Equipment

Explore the tools that can help you unlock the night sky.

Credit: Peter Michaud, Gemini Observatory.

Astrophotography

Capturing great celestial sights is both an art and a skill.

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