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In regard to green casts here’s my experience......
Here’s a comparison of subs with imaging NGC 3372 Carina under Bortle 7/8 in Sydney compared to Bortle 3 South coast NSW
Same camera 2600MC , same settings , same sub exposure time ( 180 sec ) and both using the Optolong L Extreme filter
Moon phase was waxing around 25 to 30%
My green cast on the Sydney sub is definitely Light Pollution with a bit of moon glare thrown in.
I never ever get a heavy green cast on my subs down south under Bortle 3
When the moon is heading towards full , there’s a slight cast but not heavy green
Hope the above and attached helps
Cheers
Martin
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