Justin,
excellent work.
Kinda goes against the mantra that 400-800 ASA is the
zone for DSLR LX though, doesn't it.
However, as Doug and Humi have mentioned, the next step
in your research is to so a stack set of multiple subs.
The S/N ratio of any stack will alter your outcomes significantly.
Also, the number of frames in a sub set will as well.
We all benefit from this stuff, great work.
A bit of education, theory and experimenting never hurt
any of us
Does the type of alcohol used affect the outcome BTW?
Steve