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.

It may not look like much, but capturing photons from the distant quasar 3C 273 is one of the most awe-inspiring observations you can make with a small telescope.

Deep-Sky Objects

Target acquired: Observe Quasar 3C 273

The Andromeda Galaxy is the nearest large galaxy to us. Credit: Massimo Di Fusco

Cosmology, Deep-Sky Objects

How Edwin Hubble unlocked the cosmos: This Week in Astronomy with Dave Eicher

Constellation Perseus

Deep-Sky Objects

Binocular Universe: Heroic treasures

Crisscross Cassiopeia the Queen to find the constellation’s characteristic clusters.

Deep-Sky Objects

Binocular Universe: Queenly clusters

The wide-field view of the Cygnus Loop was taken with the WIYN 0.9-meter at KPNO.

Deep-Sky Objects

Secret Sky: Fleming’s Triangular Wisp

Deep-Sky Objects

Explore these three great nebulae

Deep-Sky Objects

See the sky’s best galaxy groups: This Week in Astronomy with Dave Eicher

Deep-Sky Objects, Observing

See Andromeda, our galactic neighbor: This Week in Astronomy with Dave Eicher

Deep-Sky Objects

Binocular Universe: Searching for the Cygni 100

Deep-Sky Objects

Binocular Universe: Capricornus close-up

Deep-Sky Objects, Observing, The Moon

The Moon slides into Scorpius: This Week in Astronomy with Dave Eicher

Summer Milky Way

Deep-Sky Objects, Observing

Now is the best time to see the Summer Milky Way

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.

Product Recommendations

Visit The Space Store

Popular Explorations