I have the current (old) lunar sim. I don't know all the ins and outs of the device, but I think you are limited to using the "moon" command to control rise and set and intensity. Intensity comes from a non-alterable Apex's table of values. It dims and alters rise and set nicely, but you calculate an offset value for the "moon" command if you want to keep it in sync with the real moon rise and set.