Aquila Constellation: Find the Eagle, Spot Altair, and Explore Its Deep-Sky Treasures

Quick Answer: How Do You Find the Aquila Constellation?

Look south to overhead on a summer evening — the brightest star you see high in the southern sky is Altair, the eye of the Eagle. Altair is unmistakable: it is flanked by two slightly dimmer stars, Tarazed (γ Aquilae) and Alshain (β Aquilae), forming a distinctive short straight line that marks the Eagle's head and shoulders. In July and August, Altair rises in the east as the Sun sets and is nearly overhead by midnight. It forms the southern point of the Summer Triangle, with Vega (Lyra) to the northwest and Deneb (Cygnus) to the northeast.

You do not need a telescope or binoculars to find Aquila. From a suburban backyard, Altair is easily visible as a bright, steady-white star. Once you spot Altair and its two flanking stars, the rest of the constellation stretches southward in a rough diamond shape representing the Eagle's body and spread wings. A pair of 10×50 binoculars will reveal dozens of fainter stars in the region and show you the open cluster NGC 6709 on a clear night.

Aquila Constellation Overview

Aquila is one of the 48 constellations catalogued by the Greco-Egyptian astronomer Ptolemy in the 2nd century, and it remains one of the 88 modern constellations recognized by the International Astronomical Union. Its name means "eagle" in Latin, and its pattern of stars does genuinely evoke a bird in flight — a broad body with wings extended, surveying the Milky Way from a commanding altitude.

For observers in mid-northern latitudes (the contiguous United States, Europe, and much of Asia), Aquila is a summer and early-autumn constellation. It reaches its highest point in the sky around midnight in July and August. Because it lies squarely within the band of the Milky Way, the region around Aquila is rich in star fields, open clusters, and faint nebulosity that rewards binocular and wide-field telescope exploration.

The constellation covers 652 square degrees of sky, ranking 22nd in size among the 88 constellations. It is bordered by the constellations Sagitta (the Arrow), Delphinus (the Dolphin), Hercules, Ophiuchus, Serpens Cauda, Scutum, and Capricornus. Many of these neighbours also contain excellent deep-sky targets, making the entire region a rich hunting ground for a summer night's observing session.

The Mythology of Aquila: Zeus's Eagle in the Stars

In Greek mythology, Aquila represents the eagle of Zeus, king of the gods. The most famous story connected with the constellation is the abduction of Ganymede — a mortal youth of striking beauty whom Zeus, disguised as an eagle, carried to Mount Olympus to serve as the cupbearer of the gods. Some versions of the tale say the eagle was Zeus himself in avian form; others depict the eagle as Zeus's divine messenger and companion.

The eagle also played a role in the myth of Prometheus. According to the legend, Zeus punished Prometheus for stealing fire and giving it to humanity by chaining him to a rock in the Caucasus Mountains. Each day, Zeus's eagle would descend and eat Prometheus's liver, which regenerated overnight — an endless cycle of torment until Heracles eventually killed the eagle and freed Prometheus. The constellation Aquila is sometimes identified as that very eagle, placed in the sky by Zeus as a permanent reminder of his power.

In Chinese astronomy, the region of Aquila is part of the Black Tortoise of the North (北方玄武, Běi Fāng Xuán Wǔ). The stars of Aquila, along with parts of neighbouring constellations, form several distinct asterisms. Altair itself is known as the "Cowherd Star" (河鼓二, Hégǔ èr) in the Chinese folktale of the Weaver Girl and the Cowherd — a romantic story in which Altair and Vega (the Weaver Girl) are separated by the Milky Way and permitted to meet only once each year on the seventh night of the seventh lunar month. This tale is celebrated in the Qixi Festival in China and the Tanabata festival in Japan.

How to Find Aquila in Tonight's Sky

Finding Aquila is straightforward because its brightest star, Altair, is one of the most prominent stars in the summer sky. Here is a step-by-step method that works from any location in the northern hemisphere during the summer months.

Step 1: Face south after dark. Around 9–10 PM local time in July and August, look high in the southern sky. The three brightest stars you see forming a large triangle are Vega (top-left, bluish-white), Deneb (top-left, dimmer but still prominent), and Altair (bottom, bright white). This triangle is the Summer Triangle — one of the most recognizable patterns in the night sky. Altair is the southernmost star of the three and the one closest to the horizon.

Step 2: Confirm Altair by its flanking stars. A distinctive feature of Altair is that it has two fainter stars on either side — Tarazed (γ Aquilae) about 2° to the north-east and Alshain (β Aquilae) about 2° to the south-west. They form a nearly straight line with Altair in the centre. These two stars are often called the "shoulders" of the Eagle, while Altair is its eye.

Step 3: Trace the body and wings. From Altair, follow the line of stars southward through δ Aquilae (Delta) and λ Aquilae (Lambda) to ζ Aquilae (Zeta) — this forms the Eagle's body and tail. The wings extend east and west: the western wing stretches through θ Aquilae (Theta) and η Aquilae (Eta); the eastern wing through β Aquilae (Alshain) and further to γ Aquilae (Tarazed) and beyond. The entire constellation spans about 20° from wingtip to wingtip — roughly the width of your outstretched hand at arm's length.

Step 4: Use the Summer Triangle as a signpost. Once you have identified the Summer Triangle (Vega, Deneb, Altair), you can locate not only Aquila but also Cygnus (the Swan) which contains Deneb, and Lyra (the Harp) which contains Vega. These three constellations dominate the summer Milky Way. See our beginner constellation guide for more star-hopping techniques and our star chart reading guide for detailed navigation.

Major Stars in Aquila

Altair dominates Aquila, but the constellation contains several other stars of interest to observers with binoculars or small telescopes. Here are the most notable.

Altair (α Aquilae) — The Eye of the Eagle

Altair is a white A-type main-sequence star located just 16.7 light-years from Earth — one of the closest bright stars to our solar system. It shines at magnitude 0.77, making it the twelfth-brightest star in the entire night sky. Altair is famous for its rapid rotation: it spins at about 286 km/s at the equator, completing one full rotation in approximately 8.9 hours. For comparison, the Sun takes about 25 days. This rapid rotation causes Altair to be noticeably oblate — flattened at the poles and bulging at the equator — a shape that can be directly measured by optical interferometry. Through a telescope eyepiece, Altair appears as a steady, brilliant white point; its proximity means it does not twinkle as much as more distant stars.

Tarazed (γ Aquilae)

Tarazed is an orange K-type giant star about 395 light-years distant. At magnitude 2.72, it is the second-brightest star in Aquila and sits about 2° north-east of Altair, forming one of the two "shoulder" stars. Its warm orange colour contrasts beautifully with Altair's pure white when viewed through binoculars. Tarazed is approximately 3,600 times more luminous than the Sun yet much cooler in surface temperature — a classic example of a star in its red giant phase.

Alshain (β Aquilae)

Alshain is a binary star system approximately 45 light-years away with a combined magnitude of 3.73. The primary component is a yellow G-type subgiant; the secondary is a faint red dwarf. In small telescopes, the pair can be resolved with moderate magnification (100× or higher). Alshain sits about 2° south-west of Altair, completing the distinctive three-star line that makes Aquila so easy to identify.

η Aquilae (Eta Aquilae) — A Cepheid Variable

η Aquilae is a classic Cepheid variable star whose brightness changes from magnitude 3.5 to 4.4 over a period of 7.18 days. Cepheid variables are crucial tools for measuring cosmic distances because their pulsation period is directly related to their intrinsic luminosity. η Aquilae was one of the first such stars identified, and you can observe its brightness variation yourself over the course of a week with the naked eye by comparing it to nearby stars of known magnitude.

Other Notable Stars

• ζ Aquilae (Zeta) — A blue-white A-type star at magnitude 2.99, located at the southern tip of the Eagle's tail.
• δ Aquilae (Delta) — A magnitude 3.36 F-type star forming the lower body of the Eagle.
• λ Aquilae (Lambda) — A magnitude 3.44 B-type giant star in the Eagle's tail region.
• 15 Aquilae — A triple star system resolvable in a 4-inch telescope at about 150× magnification.

Deep-Sky Objects in Aquila

Although Aquila contains no Messier objects, the constellation lies in the Milky Way and offers several attractive deep-sky targets for binoculars and small telescopes. Here are the best ones.

NGC 6709 — The "Flying Eagle" Open Cluster

Located about 2.5° south-west of ζ Aquilae, NGC 6709 is a loose open cluster of approximately 40 stars spread across 15 arcminutes — about half the apparent diameter of the full Moon. At magnitude 6.7, it is visible in binoculars as a faint patch and resolves into individual stars in a 4-inch (100mm) telescope at moderate magnification. The cluster lies about 3,500 light-years away and is roughly 150 million years old. Its scattered, irregular shape is reminiscent of a bird in flight, giving it the unofficial nickname "Flying Eagle" cluster.

NGC 6755 — Rich Open Cluster

This magnitude 7.5 open cluster lies about 4° west of λ Aquilae and contains roughly 100 stars in a 15-arcminute area. NGC 6755 is best viewed at low magnification (40–60×) in a 6-inch or larger telescope, where it appears as a rich, scattered grouping of stars against the Milky Way background. It is about 4,500 light-years away.

NGC 6760 — Globular Cluster

One of the few globular clusters visible in this region of the sky, NGC 6760 is a magnitude 9.0 globular located about 3.5° east of Altair. It is a challenge for small telescopes (4-inch and below) — you will see it as a small, faint, unresolved glow. An 8-inch telescope begins to resolve individual stars at the edges. NGC 6760 is about 24,000 light-years from Earth.

NGC 6741 — The "Phantom Streak" Planetary Nebula

This small but bright planetary nebula (magnitude 9.6) lies about 7° north of Altair. Through a 6-inch or larger telescope at high magnification (150×+), it appears as a distinctive blue-green oval disk — the remnant of a dying star that shed its outer layers roughly 10,000 years ago. Its tiny size (0.4 arcminutes) means it is easily mistaken for a star at low power; look for its distinctive colour and non-stellar shape at high magnification.

Dark Nebulae — The Milky Way Rifts

The Milky Way band cutting through Aquila contains several dark nebulae — dense clouds of interstellar dust that block the light of stars behind them, creating the appearance of "rifts" or "holes" in the star field. The most prominent is the Aquila Rift, a dark lane stretching south-west from Altair towards Scutum. These features are best seen with a wide-field eyepiece on a dark night, and they are well worth exploring with nothing more than binoculars from a dark-sky site. The contrast between brilliant star fields and inky black dust lanes is one of the most striking sights in the summer Milky Way.

Best Binoculars for Viewing Aquila

Aquila is a wide constellation, and its finest deep-sky objects — open clusters, star fields, and the Milky Way rifts — are best appreciated through binoculars rather than a telescope. Here are our recommendations for binoculars that will enhance your Aquila viewing sessions.

Editor's Pick — Best for Wide-Field Summer Observation

Celestron SkyMaster 15×70 Binoculars

The Celestron SkyMaster 15×70 is a classic choice for Milky Way observation. The 70mm objective lenses gather enough light to reveal NGC 6709 as a distinct patch and to show dozens of additional stars in the Aquila region. At 15× magnification, the field of view is wide enough (4.4°) to frame the entire Altair–Tarazed–Alshain trio and the surrounding star fields. The multi-coated optics produce crisp images with minimal chromatic aberration. A tripod adapter is recommended for steady viewing at this magnification.

• ✓Excellent light grasp for Milky Way
• ✓Wide field perfect for constellation viewing

• ✗Requires tripod for steady use
• ✗Heavier than handheld binoculars (over 2 lbs)

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Celestron UpClose G2 10×50 Binoculars

A more affordable and portable option for casual constellation viewing. The 10×50 configuration provides a wide 6.5° field — more than enough to frame the entire Aquila head region. These binoculars are light enough for hand-held use, making them ideal for quick observing sessions and for sharing the view with family. While they will not reveal as many stars or deep-sky objects as the 15×70 model, they provide a satisfying introduction to the summer Milky Way and are excellent for identifying the main stars of Aquila.

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Best Telescopes for Aquila Deep-Sky Objects

While binoculars are ideal for wide-field sweeping, a telescope is needed to appreciate the planetary nebula NGC 6741 and to resolve globular cluster NGC 6760. A modest 6-inch Dobsonian provides dramatic views of these objects. Here are two recommendations well-suited to summer deep-sky observing.

Sky-Watcher Classic 200P Dobsonian 8-inch

An 8-inch Dobsonian is the ideal instrument for summer deep-sky observing. The large aperture resolves NGC 6760, reveals the blue-green disk of NGC 6741 at high power, and provides breathtaking views of the Milky Way star fields in Aquila. The simple alt-azimuth mount sets up in minutes — perfect for spontaneous summer observing sessions. Pair it with a 25mm eyepiece for low-power sweeping and a 10mm for close-up views of planetary nebulae.

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Common Myths and Observing Tips for Aquila

Frequently Asked Questions About the Aquila Constellation

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