The attached PDF shows different processing techniques for unmodified camera RAW images - won't work for jpeg.
The dcraw commands are there for anyone who wants to give it a go.
Basically, convert raw to colour images first and then align and stack. If you have ufraw or something similar and not too many files the process can be done manually with a GUI.
Last edited by rcheshire; 16-03-2019 at 06:44 PM.
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