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Sagittarius to Scutum (135mm Ra).jpg
This is a framing of the rich collection of nebulas, star clusters and star clouds in the region of tghe Milky Way from northern Sagittarius (bottom) to southern Scutum (at top).
Most prominent at bottom is the bright Small Sagittarius Starcloud, aka Messier 24, a dust-free region of stars whiter than the surrounding dust-dimmed yellower star clouds in this area of the Milky Way. The M24 cloud is accompanied by reddish emission and bluish reflection nebulas, IC 1284 and NGC 6595 respectively. The M24 star cloud is punctuated by the small distinct dark nebula Barnard 92.
To the left (east) of M24 is the bright but sparse star cluster M25, while to the right (west) is the richer M23 cluster. At centre are the two bright emission nebulas, M17 or the Swan Nebula, and above it, M16 or the Eagle Nebula. Between M17 and M24 is the small star cluster M18. So there are six Messier objects in this field.
Above M16 is the faint and diffuse nebula Sharpless 2-54 with the tiny red dot of Simeis 3-123 superimposed on it.
The field of view is about 10º by 15º.
This is a stack of 10 x 2-minute exposures with the Canon RF135mm lens at f/2.2 and red-sensitive Canon Ra at ISO 800, on the Star Adventurer tracker but unguided. Taken from home on a very clear night, Sept 9/10, 2023, essential to get this field low in the south from my latitude of 51º N. The lens was equipped with an URTH broadband light pollution reduction filter to help suppress sky glow and increase contrast.
Most prominent at bottom is the bright Small Sagittarius Starcloud, aka Messier 24, a dust-free region of stars whiter than the surrounding dust-dimmed yellower star clouds in this area of the Milky Way. The M24 cloud is accompanied by reddish emission and bluish reflection nebulas, IC 1284 and NGC 6595 respectively. The M24 star cloud is punctuated by the small distinct dark nebula Barnard 92.
To the left (east) of M24 is the bright but sparse star cluster M25, while to the right (west) is the richer M23 cluster. At centre are the two bright emission nebulas, M17 or the Swan Nebula, and above it, M16 or the Eagle Nebula. Between M17 and M24 is the small star cluster M18. So there are six Messier objects in this field.
Above M16 is the faint and diffuse nebula Sharpless 2-54 with the tiny red dot of Simeis 3-123 superimposed on it.
The field of view is about 10º by 15º.
This is a stack of 10 x 2-minute exposures with the Canon RF135mm lens at f/2.2 and red-sensitive Canon Ra at ISO 800, on the Star Adventurer tracker but unguided. Taken from home on a very clear night, Sept 9/10, 2023, essential to get this field low in the south from my latitude of 51º N. The lens was equipped with an URTH broadband light pollution reduction filter to help suppress sky glow and increase contrast.
- Copyright
- © Alan Dyer/AmazingSky.com
- Image Size
- 4480x6700 / 33.0MB
- www.amazingsky.com
- Contained in galleries
- Messier Objects, The Milky Way, Various Constellations

