M 24 and nebulae in the constellation Sagittarius

This wide-angle image is dominated by the gigantic, dark molecular cloud Lynds 291 with the sub-regions LDN 314 and 315 in the center of the image. The emission nebula IC 1284 and the small blue reflection nebulae NGC 6589 and NGC 6595 are located in the middle of the molecular cloud.
Messier 24 is a visible region of the Sagittarus spiral arm with a view on the central regions of the Milky Way that is not obscured by dark gas and dust clouds. The light absorption of gas and dust in the denser regions of LDN 291 is between 30 and 40 magnitudes.

larger image
Optics: Canon EF 200 mm f/2.8L USM at f/4
Aperture: — mm
Focal Length: 200 mm
Camera: Canon EOS 60Da
Exposure: 22 x 300 s
Location: Chamaeleon Observatory, Onjala Lodge, Namibia
Processing: DeepSkyStacker, Nebulosity, Photoshop
Diameter:400 light years (M 24)
Distance:12,000 light years
annotated image

image field in the sky