NGC 6357: the Lobster

NGC 6357:  the Lobster
5 months ago
1

NGC 6357: the Lobster

At the heart of the Lobster nebula is a compact cluster of exceptionally hot stars, Pismis 24. The radiation from the cluster ionizes much of the surrounding gas to an unusual extent, giving rise to strong OIII emission (in blue in this Hubble-palette rendition).
The angular size of the nebula is well matched to the field of view of CHI-2, used for this image. I've left the image in a slightly 'softer' state than i might normally choose, but zooming in will still reveal a lot of fine detail.
SPECIFICATIONS
Telescope ..........................................................................................................................................................................................................................
Telescope
CHI-2
Camera ..........................................................................................................................................................................................................................
Camera
FLI PL16083
Location ..........................................................................................................................................................................................................................
Location
Rio Hurtado valley, Chile
Date of observation ..........................................................................................................................................................................................................................
Date of observation
2020/07--2020/09
Filters ..........................................................................................................................................................................................................................
Filters
HOS (20,16,14x300s)
Processing ..........................................................................................................................................................................................................................
Processing
PixInsight, Topaz AI, CS6
Credits ..........................................................................................................................................................................................................................
Credits
ian howarth/Telescope Live
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