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A combination of several things I think Glen; a little bit of CA possibly, as
the lens was wide open [trying to gather as much light as poss before the moon rose], a bit too much contrast tweaking, and the colour saturation
was also a bit high, looking to see how much exposure was necessary to
start to show the reds in the area.
P.S. It turns out that I was wrong on all counts. Every sub I took that night, anywhere in the sky, has strong blue halos around
all the brighter stars. I hope I haven't bought another lemon, this model of lens is not supposed to have any C.A. at all.
raymo
Last edited by raymo; 29-12-2015 at 11:56 PM.
Reason: more text
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