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Sagittarius Star Cloud/M24 - a Window into the Milky Way’s Heart
Imagine viewing a part of the Milky Way with a concentration of stars so dense that it glows brightly as a cloud. This describes Messier 24, also known as the Sagittarius Star Cloud. It’s not a cluster or a nebula, but rather a stunning open swath of the Milky Way, visible through a gap in interstellar dust, appearing as a cloud of starlight.

Located in the constellation Sagittarius and spanning nearly 2 degrees across—four times the width of the full Moon—the Sagittarius Star Cloud is one of the richest star fields visible in a telescope or binoculars.

Shining at about magnitude 4.6, M24 is easily visible to the naked eye as a hazy patch in dark skies. Through binoculars or a small telescope, it explodes into a dazzling starfield of thousands of stars of varying brightness, sprinkled with dark nebulae that add dramatic contrast. It’s one of the few places where observers can look directly into the dense spiral arms of our galaxy and see stars lying up to 10,000 light-years away.

Messier 24 is a stellar showcase—not a single object, but a deep window into the galaxy itself. Observing it is like peering through a natural portal in the dust clouds, offering one of the most awe-inspiring views in the summer Milky Way. For visual observers, it’s an unforgettable stop in Sagittarius and a must-see for any night spent scanning the galactic core.


Sagittarius Star Cloud/M24
Rating: 🔵 Stagazer FavoriteLevel: 🔵 EasyHow: When: mid-Jun - Sep
🌟 A Rare Window into the Milky Way’s Inner Arms
Most of the Milky Way’s core is obscured by thick dust, but M24 offers a unique view through this veil. It lets you peer directly into one of the galaxy’s spiral arms, revealing deep stellar layers that are normally hidden from view.
🌟 Spectacular in Binoculars and Wide-Field Scopes
M24’s huge size and brightness make it perfect for binoculars or low-power telescopes. Even modest instruments reveal a dazzling spray of stars, with dramatic contrasts provided by small dark nebulae that appear as soft shadows cutting through the glow.
🌟 Ideal for Beginners and Veterans Alike
Because it’s easy to find and doesn’t require large aperture or dark-sky expertise, M24 is perfect for beginners. At the same time, experienced observers will enjoy exploring its fine structure, embedded clusters, and dark nebulae.
🌟 Rich with Detail and Subtle Structure
Within M24 lie smaller open clusters and absorbing dark clouds like Barnard 92 and Barnard 93. Observers who take time to explore its structure will find that this star cloud offers more than a beautiful view—it’s full of layers, texture, and complexity.
🌟 A Summer Highlight in Sagittarius
Situated in one of the most rewarding parts of the sky, M24 is an ideal stop on a summer tour of Sagittarius. It pairs beautifully with nearby Messier objects like M17, M18, and M25, anchoring one of the richest observing regions in the Milky Way.
🌟 A Photogenic Star Field
For astrophotographers, M24 offers a richly textured field filled with stars, dark dust, and embedded clusters. It’s ideal for wide-field imaging, capturing both the glow of deep galactic starlight and the shadows of interstellar matter in a single frame.
Sagittarius Star Cloud/M24
NamesSmall Sagittarius Star CloudConstellationSagittariusDistance10,000 ly
RA, Dec18h 20m 18s, -18° 32' 26"Angular Size90'Magnitude+2.5
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Moon
Sagittarius Star Cloud/M24
Find the Summer Triangle which consists of the three stars, Vega (+0.02), Altair (+0.93) and Deneb (+1.33). Hop from Deneb to Altair and continue to the Teapot Asterism of Sagittarius.
If you already know how to find the Swan Nebula/M17, use the first option below. Otherwise, use the second option.
Option 1: Point to Gamma Scuti (+4.69) in Scutum using binoculars or a finder. Hop to the Swan Nebula and hop again to M24.
Option 2: Find the star Kaus Borealis (+2.82), the tip of the Teapot. Find Polis, also known as Mu Sagittarii (+3.83). Point to Polis. Then hop to M24 using binoculars, a finder or a low-powered eyepiece.
Use a low-power eyepiece or binoculars to fully appreciate its size and complexity—it’s not a tight cluster, but a sweeping window into the galaxy’s inner arms.
Sagittarius Star Cloud/M24
Use Binoculars or a Wide-Field Scope
Messier 24 spans nearly 2 degrees, so binoculars or a telescope with a wide field of view are ideal. High magnification cuts off the edges and loses the sense of its scale and starfield richness.
Observe from a Dark Sky Location
M24 is best viewed under dark skies where the Milky Way is clearly visible. Light pollution will wash out the background glow and make the subtle dark nebulae harder to detect.
Look for the Dark Lanes
Within M24 are dark nebulae like Barnard 92 and 93. These small, shadowy patches appear as voids against the backdrop of stars and add dramatic contrast to the view.
Let Your Eyes Adjust
Spend 20–30 minutes in darkness before viewing to let your eyes adapt fully. This allows you to see deeper into the star cloud and notice finer details across the field.
Sweep Slowly to Soak It In
Instead of staring at one spot, gently sweep across the star field. The motion helps reveal dense areas, faint groupings, and the full texture of this galactic window.
Pair with Nearby Messier Objects
M24 is close to several other targets like M17, M18, and M25. Build a mini observing tour around it for a rich Milky Way session with diverse views.
Sagittarius Star Cloud/M24
Naked Eye
With the naked eye under dark skies, Messier 24 appears as a soft, hazy patch along the Milky Way in Sagittarius. It resembles a brighter section of the galaxy rather than a distinct object, but its glow stands out from the surrounding sky, especially when the Milky Way is high and the air is clear.
Binoculars
In binoculars, M24 transforms into a breathtaking cloud of stars. Thousands of pinpoint lights fill the field of view, revealing its full size and density. The contrast between bright and faint stars becomes apparent, and the embedded dark nebulae appear as soft voids within the stellar glow.
Small Telescope
Through a small telescope at low magnification, M24 remains a rich and sweeping field. The increased aperture resolves more stars and brings subtle depth to the view. The dark nebulae Barnard 92 and 93 stand out more clearly, and faint clusters within the star cloud begin to emerge.
Medium Telescope
With a medium telescope, M24 becomes densely populated with countless stars of varying brightness. The dark patches gain sharper definition, and individual stars appear more crisp. The sense of three-dimensional layering deepens, revealing the complexity of looking into a crowded galactic arm.
Large Telescope
In a large telescope with a wide-field eyepiece, the field bursts with brilliance and fine detail. The star count is overwhelming, with rich granularity across the entire view. Substructures, embedded clusters, and the edges of dark lanes become more distinct, but the full beauty of M24 is still best appreciated at lower magnification to capture its sweeping scale.
Sagittarius Star Cloud/M24
Messier 24 is best viewed from dark sites where its full richness and the surrounding Milky Way are visible. As light pollution increases, the star density flattens, and its dramatic contrast fades, reducing the impact of this deep galactic window.
🟣 In Bortle 1–2 skies, Messier 24 is a stunning, glowing star cloud embedded in the Milky Way. Thousands of stars are visible across its broad field, with dark nebulae like Barnard 92 and 93 sharply outlined. The view is deep, rich, and full of contrast.
🔵 Under Bortle 3–4 skies, M24 remains impressive. The overall star density is still high, though the Milky Way background is slightly muted. The dark lanes are visible but softer, and the sense of depth is reduced, though still compelling.
🟡 In Bortle 5–6 skies, M24 starts to lose much of its fainter structure. The brightest stars remain, but the star cloud appears flatter, with dark patches harder to separate from the general background. Its impact is noticeably diminished.
🟠 Under Bortle 7+ skies, M24 fades significantly. The Milky Way is largely invisible, and the star cloud loses its defining contrast. Only a sparse field of brighter stars remains, with the dark nebulae essentially lost in the skyglow.