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Nicely guided.
Looks black and white to me. There could be various reasons for this, but I seriously doubt the phase of the moon.
Lack of a UV/IR block filter perhaps? Also to preserve star colours, it is important not to saturate the chip...easily done with CMOS, but easily fixed by stacking shorter exposures. Lastly, darks and flats help...particularly with the moon in the sky.
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