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Corona Australis Nebulosity: A bit away from the galactic plane in the constellation of Corona Australis (Southern Crown) in a distance of approx. 500 light years lies one of the closest and most interesting star generating regions. The huge Corona Australis Molecular Cloud obstructs the light from the background stars. Only the light of a few very bright young stars is reflected from the dense dust and generates the beautiful reflection nebulae in this image.
The nebulae on the left with the two bright knots are NGC 6727 and NGC 6726, the one to the right IC 4812. The smaller triangular nebula denotes NGC 6729 with R CrA at its peak. The  arclike structure is designated HH 100 and is a so called Herbig-Haro object. Several smaller of such objects can be detected in the image. These objects are to be believed stars in the very early phase of their life, still hidden in their dust clouds, but ejecting tremendous amounts of matter  from the star sometimes in long jets, probably due to very strong magnetic fields.
For a wider field-of-view image see here.

The image was taken at the IAS astronomical site at the Hakos farm in Namibia.



Object Corona Australis Nebulosity
Category IAS Hakos, Namibia
Designation NGC 6727
Constellation Corona Australis
Optics Keller 20 inch Cassegrain f/9 in corrected secondary focus
Mount Liebscher GEM
Camera SBIG STL-11000M with internal CFW 5
Exposure 4 x 10min each Baader RGB filterset. Maxim DL for image acquisition
Calibration Dark Frame
Guiding StarlightXpress Lodestar on Schneider OAG, Maxim DL as Guiding Software
Processing Maxim DL5, CCD Stack, Photoshop. Color Code R,G,B
Location-Date IAS-Hakos, Namibia - 10 Apr 2011
 
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