Thanks Steve. Yes, the background is on the darkish side. I had it a touch lighter but there was some banding (due to stacking) that I wasn't happy with so I made it darker than what I normally do.
Re light pollution filter: yeah it's something I could do. I can get up to 10 minutes @ ISO800 without skyfog being a problem. Without the filter, i would be lucky to get above 5 minutes. What's the benefit of not using the filter?
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