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NGC 6334 and NGC 6357 - cat's paw and lobster - in the
constellation Scorpion |
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Object description:
Our mosaic of 2 shows the Cat's Paw Nebula (NGC 6334, bottom right of
mosaic) and the Lobster Nebula (NGC 6357),
taken with 500mm focal length. At first glance it seems to be a double nebula,
but a look at the distance of the two H-II regions gives a different picture.
They are so close together in the sky only by chance, because NGC 6334 is about
5500- and NGC 6357 about 8000 lightyears away from the solar system.
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Both are star forming regions with a real diameter of
about 50 light years. They appear reddish to us, although there are also blue
and green light components, which are however strongly scattered by dark dust
and gas clouds, which lie between our solar system and the H-II regions. And so
mainly the reddish part of the light reaches the observer on Earth. The regions
were discovered on June 7 and 8, 1837 by John Herschel during his observations
in South Africa.
Both
nebular regions we also photographed separately with longer focal length, there
you can find detailed object descriptions:
NGC 6357 here and
NGC 6334 her.
More images and descriptions can be
found at ESO, for NGC 6334
here and for NGC 6357
here.
We can also show both H-II regions as
narrowband images, the cat's paw (NGC 6334) (NGC 6334)
here and the lobster (NGC 6357)
here.
« Click here or the thumbnail to load a large annoted image
and a size comparison to the full moon. |
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