Was looking over this post from a CE talk. This was mainly for fun to test using this code because I hadn't tried it yet. I made a filter cavity using the mirror specs and cavity dimensions. fullview.png is the result. zoomed_in_on_mirror.png is also kind of interesting on how the coating and mirror are treated. Not sure how useful this kind of image would be of the entire GQuEST experiment but I am confident I could built it if we wanted it.