Very nice imagery.
Let's open some discussion of the term UGF (Universal Gradient Filter) which is the term I and others have been using. But I have also seen the term GUF (Gradient Universal Filter). If you Google UGF you don't get results that apply to photomicrography, but when you search for Gradient Universal Filter you can find a gallery showing filters and photomicrographs shot with the filters.
So, which is the correct or accepted term?
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA