Waid Observatory


Object: M24 - The Sagittarius Star Cloud

July 7, 2024    -    Location: Dark Sky Observatory - Fort Davis, TX
Telescope: RH200-AT    Mount: Paramount MYT   Camera: QSI-683M
Exposure: LRGB = 15x2 min. each filter - Bin 1x1

Click on the image below to view at higher resolution.
Scroll down to view the image description.


 
M24

M24 - The Sagittarius Star Cloud

Catalogued as Messier 24 and IC 4714, it is also known colloquially as the Sagittarius Star Cloud[1], and sometimes referred to as the Small Sagittarius Star Cloud[3].  M24 can be found in its namesake constellation, Sagittarius.

As the view towards the center of the Milky Way galaxy is obscured by vast clouds of dark dust, only a hole in the dust allows us to even see M24[3].  When we do, however, we are greeted by a magnificent vista.  With objects that are between 10,000 and 16,000 light years distant, the cloud appears as a very large and dense population of stars, and features dark areas of dust that block light from more distant objects[3].

Interestingly, M24 is one of only three Messier objects that isn't an actual deep sky object[1].  There are, however, several catalogued celestial objects contained within its boundaries.  For example, prominent in the above image are four relative bright named objects:
      • An open cluster of stars, catalogued NGC 6603[2,3], appears in the upper right corner of the image.
      • The red emission nebula Sh2-37[3] can be observed in the upper left corner of the image.
      • Below and adjacent to Sh2-37 are two blue reflection nebulae: NGC 6590 on the left and NGC6589 on the right[3].

References
1Messier Objects M24: https://www.messier-objects.com/messier-24-sagittarius-star-cloud/#google_vignette
2Wikipedia: https://en.wikipedia.org/wiki/NGC_6603
3Cosgrove's Comos: https://cosgrovescosmos.com/projects/messier-24

 
Copyright Donald P. Waid