[Kev11 (Kevin)]

Presumably DSS in some sense measures transparency. Same object, same exposure on DSLR unmodified - one night registration score 18000 another night score 33 at which DSS says "only one frame will be stacked do you wish to continue? [you idiot!]"
But the data is there when I wind down the slider bar at top right of screen (contrast? luminance? adjustment).
How do I get DSS to detect that data? I have star detection threshold set at lowest i.e. 2%. All registration and stacking settings standard as far as I can see.
Any suggestions greatly appreciated.