DSLR gurus: some advice please


I’ve been struggling with various artifacts in my night sky photos. This pic of tonight’s moon is an excellent example of the most annoying issue. There’s a pronounced halo surrounding the immediate edges. Most obvious from about 30* to around 190*. I’ve been all over the map with the settings and can’t find the right combination to knock out that halo. Is this just a fact of life when taking celestial photos with consumer level equipment?

Any suggestions?

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