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Barnard’s E - A Shadow Among the Stars
Suspended like a shadowy glyph across the glow of the Milky Way, Barnard’s E—cataloged as Barnard 143—is one of the sky’s most striking dark nebulae. Located in the constellation Aquila, this feature doesn’t shine—it obscures, standing out by what it hides. Its nickname comes from its distinctive “E” shape, an absorbing silhouette that pops dramatically against the dense starfield backdrop near Altair, the eagle’s eye. Barnard’s E is not an emission or reflection nebula—it is pure obscuration, composed of dense molecular dust that blocks the starlight beyond it. You’re not looking at what it emits, but what it prevents you from seeing.

It sits roughly 1° west of Tarazed (γ Aquilae), and is comprised of two primary catalogued regions: B142 and B143, forming the twin limbs of the ‘E’. The whole structure spans about ¾ of a degree, easily enough to fill a low-power eyepiece or a wide-field photograph.


This is an ideal summer challenge object for dark-sky observers, particularly those with wide-field telescopes or binoculars. It rewards patient gazing: once your eyes adapt, the “E” materializes—a silent void etched into a blazing river of stars.

Seeing Barnard’s E isn’t just about spotting an object—it’s about recognizing the power of darkness. You witness the interstellar medium shaping the appearance of the galaxy itself, a cosmic fingerprint of star-forming material in its rawest form. Whether you’re sketching its shape or marveling at how a cloud can carve meaning from a starfield, Barnard’s E is a deep-sky treat that’s both subtle and unforgettable.

If the Summer Triangle is your map, then Barnard’s E is the secret message scrawled across its parchment—written in shadow, not light.


Barnard’s E
Rating: 🔵 Stagazer FavoriteLevel: 🔵 EasyHow: When: Jun - Oct
🌟 A Rare Shadow You Can See
Most celestial targets shine—Barnard’s E hides. Observing it is a thrilling reversal of expectations: instead of hunting for a glow, you’re seeking an absence. This stark silhouette stands out as a clear, crisp void in a star-rich region, giving visual proof of how dust can shape our view of the galaxy. Its bold “E” shape is not subtle—under dark skies, it jumps out like a cutout, offering a rare chance to observe cosmic obscuration with the naked eye or wide-field optics.
🌟 A Unique Summer Milky Way Target
Barnard’s E is perfectly placed in the summer Milky Way, embedded in Aquila and conveniently near the bright stars Altair and Tarazed, which serve as reliable signposts. During July through September, the area is high in the evening sky for Northern Hemisphere observers, making it an accessible and rewarding addition to seasonal observing runs. It’s an especially powerful contrast when seen against the blazing star clouds of the Galactic plane.
🌟 Ideal for Binoculars and Wide-Field Telescopes
This is one of the few deep-sky objects that’s genuinely well-suited for binoculars or small refractors with wide fields of view. Spanning around ¾ of a degree, the full extent of the “E” often looks best at low magnifications, where the dense surrounding stars provide the necessary backdrop. This makes Barnard’s E an appealing target for stargazers who don’t have large apertures but do have access to dark skies.
🌟 A Gateway to Dark Nebulae
For observers new to dark nebulae, Barnard’s E serves as an excellent introduction. Its striking shape, relatively easy location, and high contrast make it a perfect starting point before exploring more subtle objects like the Pipe Nebula, the Snake (B72), or LDN 1622. It helps develop the visual skill of detecting structure through silhouette, sharpening your eye for the hidden layers of the Milky Way.
🌟 A Photographic and Sketching Delight
5. For astrophotographers, Barnard’s E offers a dramatic negative-space composition—a crisp, blocky “E” carved into a backdrop of countless stars. It responds well to short to medium integration times in wide-field setups, particularly when paired with other Aquila dark clouds. Likewise, visual observers who enjoy sketching will find Barnard’s E rewarding: its edges are bold, its curves recognizable, and its contrast makes it a striking feature to record by hand.
🌟 A Glimpse into Star-Birth Environments
Though Barnard’s E appears dark to our eyes, it’s actually part of the stellar nursery process. The dust and gas it contains are the ingredients of new stars. Observing it gives you a direct view into the raw, pre-collapse material that will one day ignite. In this way, Barnard’s E lets you peer into the early phase of star formation, offering a deeper scientific appreciation beyond its visual beauty.
Barnard’s E
NamesBarnard's E, B142 and B143ConstellationAquilaDistance
RA, Dec19h 42m 15s, +10° 58' 07"Angular SizeNAMagnitudeNA
Angular
Size
vs
Moon
DSO TypeDark nebula: a dense cloud of gas and dust that blocks the light from stars and objects behind it, appearing as a dark patch against the brighter background of space.
Barnard’s E
The best way to star hop to Barnard’s E is to begin with the bright and easy-to-spot star Tarazed (γ Aquilae) in the constellation Aquila, which lies just northwest of Altair, the southernmost star in the Summer Triangle. Tarazed is an orange giant, noticeably brighter than the stars nearby and a natural anchor point in this rich starfield of the Milky Way.
Find the Summer Triangle which consists of Vega (+0.02), Altair (+0.93) and Deneb (+1.33). Next to Altair, find orange Tarazed (+2.71).
Using binoculars or a telescope finder, point to Tarazed. Then, hop just a little over 1° west to Barnard's E. Use a low-powered-eyepiece to explore.
Barnard’s E
Choose a Dark Sky Location
Barnard’s E demands dark skies. Aim for Bortle 1–3 conditions to make its silhouette truly pop. Light pollution washes out the Milky Way’s star field, making the nebula’s contrast much harder to detect.
Use Low Magnification
This is a wide-field target. Start with binoculars or low-power eyepieces (20–40x) in small refractors or fast Newtonians to frame the entire “E” shape. Too much magnification will isolate parts and ruin the effect.
Let Your Eyes Adapt
Spend at least 20 minutes allowing your eyes to adjust fully to the dark. The shape emerges best after your vision has acclimated to subtle contrast differences across the star field.
Find Tarazed First (next to Altair)
Begin at Tarazed (γ Aquilae) and move about 1° west. Barnard’s E lies just off this orange giant, nestled in a dense section of the Milky Way, helping with precise orientation.
Avoid the Moon
Even a quarter moon can diminish visibility. Plan your session on moonless nights to preserve starfield contrast and ensure the “E” shape is visible in full clarity.
Try Sweeping and Stopping
Slowly sweep the area around Aquila, then pause. Often, the pattern jumps out after a moment of still viewing—a distinct void against a star-saturated sky. Patience reveals the form.
Barnard’s E
⚠️ Naked Eye
To the naked eye under Bortle 1–2 skies, Barnard’s E may appear as a faint, oddly dark gap within the glow of the Milky Way, especially when Aquila is high overhead. It lacks sharp definition but can subtly register as an unnatural absence of stars—a void carved in the galactic river. This is a rare and rewarding naked-eye sight, only possible under the darkest skies and with fully dark-adapted vision.
Binoculars
Through binoculars—especially 7×50 or 10×50 models—the “E” shape becomes much clearer. The star field surrounding the region is rich and brilliant, and the two main lobes of the nebula (B142 and B143) stand out as distinct, shadowy patches. The dark “arms” of the E contrast strongly against the stellar background, and the full structure fits comfortably within the field of view, offering a compelling wide-angle look.
Small Telescope
With a small telescope, such as a 60–90 mm refractor at low power (20–40×), the structure sharpens. The star density behind the nebula becomes more apparent, and the outline of the “E” becomes clearer and more recognizable. A wide-field eyepiece captures the entire shape, and the texture of the surrounding star field helps emphasize the depth and dimensionality of the obscuring dust.
Medium Telescope
A medium telescope, such as a 6–8 inch reflector, can resolve more stars around the edges of the nebula. At moderately low magnifications, it reveals enhanced contrast between the cloud and the background stars. However, higher magnifications begin to zoom in too much and fragment the shape, so care must be taken to stay wide enough to appreciate the full “E” form in context.
⚠️ Large Telescope
Large telescopes, over 10 inches in aperture, resolve the surrounding star field into dazzling pinpoints and can showcase subtle filaments and edges along the dark nebula’s outline. However, unless paired with an extremely wide-field eyepiece, the “E” shape may not fully fit in the field, and the dramatic impact of the silhouette can be reduced. For Barnard’s E, bigger is not always better—the wide view matters most.
Barnard’s E
Barnard’s E requires the Milky Way to be richly visible for its shadow to appear. Its form is bold in pristine skies, faint but possible in darker suburban areas, and completely lost in light-polluted skies. Darkness is essential to see this cosmic silhouette.
🟣 Under Bortle 1–2 skies, Barnard’s E stands out crisply against the Milky Way—its dark “E” shape is easily distinguished as a bold silhouette carved into the star field. The surrounding sky is richly textured with stars, making the nebula’s form immediately apparent, even to experienced naked-eye observers.
In Bortle 🔵3 – 🟢4 conditions, the dark shape is still visible but begins to lose contrast. The “E” can be seen with concentration, especially in binoculars or wide-field optics, though the background stars are slightly dulled. It remains a rewarding target but no longer leaps out on first glance.
🟠 Under Bortle 5–6 skies, the Milky Way itself is significantly washed out, and the fine contrast needed to see Barnard’s E is mostly gone. It becomes difficult to discern except with careful sweeping using good optics, and even then, only fragments of darkness may register with effort and experience.
🔴 In Bortle 7+ environments, Barnard’s E becomes effectively invisible. The surrounding Milky Way starfield is too faint or absent entirely, eliminating the backdrop needed for the dark nebula to reveal its shape. It’s not a viable target from urban or suburban skies.