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Sh2-129 is a well known object from the Sharpless catalogue of Hydrogen emitting areas, there is also a small amount of SII in the nebula but no OIII. The Giant squid Nebula was only discovered two years ago and is thought to be a planetary nebula, it only emits in OIII and not the other two emission lines, it is exceptionally faint and needs a lot of stretching in the processing to get it to show
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Date/Time | 03-Aug-2014 10:13:49 |
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