Hi,
This is an image of M20, also known as the Trifid Nebula. It is a
combination of an open cluster, an emission nebula (lower red portion),
reflection nebula (upper blue portion), and dark nebula (gaps in the
emission nebula). It is located about 4,100 light years away in the
constellation Sagittarius.
Comments and suggestions welcomed.
http://azstarman.net/CDK/M20.htm
Thanks,
Bernard
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