NGC 6164 – is a bi-polar emission nebulae in the constellation Norma. It is about 4200 light years away and its about 4 light years across. It has some fairly enthusiastic stellar winds – around 8 million km per hour.
This image is taken in narrowband – 3nm HA, OIII. Ha is mapped to Red, OIII is mapped to Green and Blue. This is 70 subframes, 1200 s each @ -20C, 2×2 Bin.
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