361–380 of 462 results
Orion Nebula

Deep Sky

A Pair of Nice Nebulae

When you leave the planets, moons, and comets of our solar system behind, you enter the realm of the deep sky, a place of subtle glows and faint lights.

Comin' our way Friday

Celestial Objects to Observe

Hunting Asteroids From Your Backyard

You can discover an asteroid tonight. Digital technology and the CCD revolution have given amateurs the ability to do it. Here's how.

Auroral curtain

Celestial Objects to Observe

Satisfy Your Auroral Longing

If you don’t live in Alaska or Iceland, you can improve your chances of seeing an aurora — and maximize your amount of sleep — by monitoring the level of geomagnetic activity.

Deep Sky

Observing Amazing Nebulae Season by Season

Nebulae are among the most beautiful sights in the night sky but their diffuse nature can make them challenging to locate. Here are a few interesting nebulae, and most are easy to spot.

Celestial Objects to Observe

Clusters of Clusters: Globular Pairings

Globular clusters are more concentrated in the direction of Sagittarius since that's where we find the center of the Milky Way. This area of the sky affords us opportunities to see several of these rich, ancient clusters in close proximity.

Celestial Objects to Observe

Six Globulars Near Antares

If you can find bright Antares in Scorpius, you can use our chart to find these half dozen globular star clusters with a telescope — and maybe even binoculars.

Moon phases in perspective

Celestial Objects to Observe

A Month of Moonwatching

Whatever its phase, the magnificent Moon has lots to offer.

Celestial Objects to Observe

Winter Clusters Galore

The sky between the Big and Little Dogs may be poor in bright stars, but it’s rich in star clusters for small telescopes.

Celestial Objects to Observe

Open Clusters by the Season

Open clusters are popular targets for deep-sky observers, particularly when composed of varied-color stars. Here are some treats for scopes both large and small.

Celestial Objects to Observe

A Sampling of Star Clusters

You don't need a big telescope to be dazzled by deep-sky wonders, particularly if your target is one of the many lovely star clusters.

The Straight Wall at last quarter

Moon

Ancient Thebit and Huygens's Sword

The absolute best example of a lunar fault is the Straight Wall. This well-known lunar feature is a long thin line that never fails to impress; even through a small telescope it's a fascinating sight.

Rising full Moon

Moon

What Is A Blue Moon in Astronomy?

Is Friday's full Moon "blue"? Depends on who you ask, but if someone answers yes, it's because of a mistake in a 1946 issue of Sky & Telescope.

Albireo photo

Celestial Objects to Observe

Leading a Double (Star) Life

Double stars show us color combinations we seldom see anywhere else in the sky. Viewing these stellar twins yourself is fun and easy.

Delta Cephei

Celestial Objects to Observe

Seeing Double (Stars)

Spotting double stars is always a stargazing treat! Here are some targets to get you started.

Orion

Celestial Objects to Observe

Orion's Splendid Double Stars

Some of the finest double and multiple stars in the sky are on display as the constellation Orion, the Hunter, comes to prominence.

Trapezium stars in the Orion nebula

Celestial Objects to Observe

Pretty Double Stars for Everyone

Double stars can be found everywhere. Here's a selection of pretty doubles vislble when Orion the hunter is riding high in the sky.

Double star Gamma Leonis

Double Stars

More Pretty Double Stars

When the Milky Way is prominent, don't overlook the wealth of pretty double stars visible during this season.

Camcorder for occultations

Occultations

Camcorder Timing Tips

Many households now possess a camcorder. Many amateur astronomers may be unaware that these devices are sensitive enough to record occultation events.

Celestial Objects to Observe

Occultations: The Fastest Things in the Sky

Watch in your telescope as the edge of the Moon snaps a star out of sight.

Southern Cross

Celestial Objects to Observe

Southern Double-Star Gems

The treasure-filled skies of the Southern Hemisphere offer observers more than showpiece clusters and nebulae.

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