Greg, would a single 300sec sub cooled to -10C @ 0 Gain Bin 1 through an L-filter be of any use to you for assessment? (taken with a Takahashi µ250CRS @ native 2500mm/F10).
https://www.dropbox.com/s/02c3yy1rdz...e0005.fit?dl=0
I'm still taking more subs so no final integration yet.