Howdy
Nicely framed too.
I recommend the uv/ir filter as some IR does get past the lower end of the UHCS filter. I actually tested that earlier when sky was light, I shot the sky with and without the uv/ir filter with uhcs filter on both times. The shot with the uv/ir filter was darker and less pink. See my notes on your eta carina pic for how I colour balance modded camera pics.
Scott
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