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I do not recommend to save stacked data with
16-Bit Integer format. This automatically creates data loss because
of rounding the 32-Bit small numbers down to only 16 Bit.
A stacked image needs to be saved in 32-Bit Floating Point
Format to ensure no data loss.
If you do all stacking and processing
with one Programm which allows full 32/64-Bit processing and
saving like for example PixInsight, you dont have to convert results
and do not get into the troubles of loosing faint details.
Never ever save stacked data in 16 Bit integer Format!
Gerald
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