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Thanks Lost in space
The shielding of stray light ( artificial light or moon glare ) from your OTA is a major key to imaging in Sydney or other Bortle 8 locations
I can usually push my exposures to 2 or 2.5 minutes at ISO800 with the histogram just nudging past 1/3. The raw file is fairly bleached out but I know the good data is in there so I don’t worry to much
I use a stock DSLR and don’t use filters but set my white balance to “Auto” rather than “daylight” or “sunny”
Once again I use large quantities of dithered guided subs , stack in DSS with Settings designed for DSLR raw files and use Startools which is tremendous for removing gradients, vignetting and all types of noise
Cheers
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