Description:
You can see that there is an test-"enclosure" around the sim.
The two monitors both run flightgear (well not at the time of this shot obviously :), each from a different computer.
The upper one is used for the outside view, the lower one with the "gauge-mask" (cardboard with pieces of pringles potato chip tubes glued to the round cut-outs), similar to "tigert" Tuomas setup.
Since flightgear has networking built-in (similar to wideview, just better), the lower screen runs flightgear in slaved mode with a fullscreen GA IFR panel.