Have to give a BIG thanks for this Author (Robert Nufer) & his program. Great work to be able to assist in this experience. After modifying and working on the "standard' exposure table to enhance it, those little tweaks made all the difference. (Yet some of my own "fiddling" didn't work out, yet that's me, not the program.)
The exact timing of an event like this (considering all the potential variables), is mostly a "crap shoot", yet his effort(s) have probably assisted many to capture an experience like this with acceptable results. (I for one am one of them)...
To offer software like this @ "no charge"..deserves a major THANK YOU !!!!