Certainly very colourful. A good cluster. I read that the green is also associated with the yellow stars so that they are green/ yellow in some instruments. Once you start using filters on astro cameras the colour is up to you I think. With a DSLR and no processing in daylight white balance , the initial raw is set by the manufacturers systems to be as close to what you can see as possible. The astro camera colour balance is pretty poor without manually setting the colour histogram.
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